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Flavor enhancer Monosodium glutamate is the monosodium salt of glutamic acid and is the classic flavor-enhancing additive used in the food industry, especially for the purpose of enhancing the umami taste.
In the European Union and Codex systems, it is identified by the number E 621 / INS 621.
The main function of the flavor enhancer Monosodium glutamate is not so much to give a food a completely new aroma but to strengthen the perception of existing savoury, meat-like and proteinaceous flavors.
It is especially used in soups, sauces, noodle seasoning, snack seasoning, meat products, ready meals, bouillon, gravy, marinade and spice mixtures.
The characteristic sensory effect of the flavor enhancer Monosodium glutamate is the umami taste.
Umami is considered one of the basic taste categories besides sweet, sour, salty and bitter.
Free glutamate interacts with umami receptors in the mouth, contributing to increased savoury intensity.
Monosodium Glutamate is chemically the sodium salt form of L-glutamic acid.
The commercial food-grade product mostly shows a crystalline structure in the form of monohydrate.
The molecular formula for Monosodium L-glutamate monohydrate is C5H10NNaO5 and the molecular weight is approximately 187.13 g/mol.
Different formula/molecular-weight expressions can be seen for Anhydrous monosodium glutamate.
Therefore, the hydrate form and specification of the exact commercial grade purchased must be verified through the COA.
The flavor enhancer Monosodium glutamate is in the form of a white or near-white crystalline powder.
It shows high solubility in water.
At low or medium usage levels, it can markedly strengthen the savoury character of food.
The effect of the flavor enhancer Monosodium glutamate can vary further with sodium chloride, disodium inosinate, disodium guanylate, yeast extract, hydrolyzed vegetable protein and natural glutamate sources.
In particular, 5'-ribonucleotide components such as IMP and GMP can show strong synergy with glutamate.
For this reason, in noodle seasoning, snack seasoning and bouillon formulations, the flavor enhancer Monosodium glutamate is not considered alone, but as a part of the flavor system.
The level of use of the flavour enhancer Monosodium glutamate is not a single percentage for whole foods.
Product category, current salt level, natural glutamate amount, nucleotide presence, target flavor intensity and relevant legislation should be evaluated together.
It contains flavor enhancer Monosodium glutamate sodium.
However, for the same perceived flavor intensity, it can be considered part of a total sodium reduction strategy in some formulations compared to using sodium chloride alone.
This effect depends on the formulation and does not guarantee automatic sodium reduction.
The flavor enhancer Monosodium glutamate is not a strong preservative.
It is not used for antimicrobial purposes.
Its main function is flavor enhancement.
It should also not be confused with nutritional amino acid supplements used for protein or amino acid fortification.
The glutamate in Monosodium Glutamate is chemically the same type of glutamate as glutamate, which is naturally found in foods.
Natural free glutamate can be found in tomatoes, cheese, mushrooms, broths, and fermented products.
Therefore, the sensory effect of the use of Flavour enhancer Monosodium glutamate takes place on the same receptor pathway as natural savoury compounds.
JECFA evaluates Monosodium L-Glutamate in the flavour enhancer function class and defines the group ADI value as "not specified".
The FDA, on the other hand, considers the flavor enhancer Monosodium glutamate added to food as "generally recognized as safe", that is, GRAS.
However, category-based terms of use and labeling requirements in the target country should be checked separately.
According to the FDA, added flavor enhancer Monosodium glutamate must be clearly stated as "monosodium glutamate" in the ingredient list.
Monosodium Glutamate contains glutamate but not gluten.
Glutamate and gluten are different structures in terms of chemicals and nutrition.
When purchasing the flavor enhancer Monosodium glutamate, only the generic name "Flavor enhancer Monosodium glutamate" is not enough.
Food-grade status, E621 / INS621 compliance, assay, loss on drying, chloride, sulphate, heavy metals, optical rotation or stereochemical identity, crystal size, appearance and COA information should be checked together.
WHAT IS MONOSODIUM GLUTAMATE?
Monosodium Glutamate is the monosodium salt form of L-glutamic acid.
It is commonly known by the acronym Flavor enhancer Monosodium glutamate.
The food additive number is E 621. The Codex INS number is 621.
In JECFA, it is identified as Monosodium L-Glutamate Monohydrate and Glutamic Acid Monosodium Salt Monohydrate. The basic precursor of the flavor enhancer Monosodium glutamate is glutamic acid.
Glutamic acid is one of the amino acids found in proteins. Unlike protein-bound glutamate in food, free glutamate can interact directly with taste receptors.
When the flavor enhancer Monosodium glutamate dissolves in water, it forms sodium ion and glutamate ion.
This dissociation is important for umami taste perception.
Glutamate interacts with umami receptors in the mouth.
Sodium contributes to the ionic profile and overall taste balance of the product.
Commercial Flavor enhancer The modern industrial approach in the production of monosodium glutamate is mostly based on the conversion of carbohydrate feedstock to glutamic acid by fermentation.
Sugarcane molasses, sugar beets, tapioca, starch hydrolysates or other sources of fermentable carbohydrate can be used.
After fermentation, glutamic acid is separated.
Then, monosodium glutamate is formed by applying neutralization with sodium base.
After crystallization, separation, drying and sieving processes, a food-grade crystal product is obtained.
This process does not mean that the flavor enhancer Monosodium glutamate is a "synthetic flavor".
It is the sodium salt form of fermentation-produced glutamic acid.
The main chemical structure of the flavor enhancer Monosodium glutamate is glutamate salt, which contains a single amino group, two carboxyl-derived groups, and sodium ion.
It contains one molecule of crystal water in the form of monohydrate.
Molecular formula for Monosodium L-glutamate monohydrate:
C5H10NNaO5
is as follows.
Its molecular weight is approximately 187.13 g/mol.
CAS No 142-47-2 is commonly used for monosodium glutamate.
The CAS number 6106-04-3 can also be seen in food-additive and monohydrate sources.
For this reason, the exact hydrate/grade ID should be checked through the supplier documentation.
Key functions of flavor enhancer Monosodium glutamate:
Umami enhancement
Savory flavour enhancement
Meaty flavour enhancement
Broth flavour enhancement
Saltiness perception support
Overall flavour rounding
Aftertaste balancing
Low-sodium formulation support, in suitable systems
Seasoning system synergy
IMP/GMP synergy
The flavour enhancer Monosodium glutamate does not create a very complex flavour profile on its own.
For example, it is not a substitute for chicken flavor, beef flavor or cheese flavor.
It makes the existing savoury character of these aromas more strongly perceptible.
For this reason, the expression flavour enhancer is technically different from the expression flavouring substance.
COMMON PRODUCT AND CHEMICAL NAMES
Monosodium Glutamate
Monosodium L-Glutamate
Flavor enhancer Monosodium glutamate
Sodium Glutamate
Glutamic Acid Monosodium Salt
Monosodium Glutamate Monohydrate
E 621
E621
INS 621
CAS 142-47-2
CAS NO, EC / EINECS NO AND CHEMICAL IDENTIFICATION
Product Name: Monosodium Glutamate
English name: Monosodium Glutamate
Abbreviation: Flavor enhancer Monosodium glutamate
Food additive number: E 621
INS number: 621
Chemical name: Monosodium L-Glutamate
Other Name: Glutamic Acid Monosodium Salt
Common CAS No: 142-47-2
In Monohydrate CAS sources: 6106-04-3
EC No: 205-538-1
Chemical class: Amino acid salt
Main structure: L-Glutamic Acid monosodium salt
Monohydrate molecular formula: C5H10NNaO5
Monohydrate molecular weight: Approximately 187.13 g/mol
Anhydrous sodium glutamate formula: C5H8NNaO4
Physical appearance: White or near-white crystalline powder
Odor: Mild or uncharacteristic
Water solubility: High
Main food function: Flavour enhancer
Basic sensory effect: Umami
JECFA Function Class: Flavour Enhancer
JECFA NAME: Not specified
FDA status: Added Flavor enhancer Monosodium glutamate is considered GRAS
Major applications: Soups
Main applications: Sauces
Main applications: Savoury snacks
Major applications: Seasoning blends
Main applications: Meat products
Main applications: Ready meals
Major applications: Noodles
Major applications: Bouillon
Major applications: Gravies
Major applications: Marinades
CHEMICAL STRUCTURE AND MOLECULAR PROPERTIES OF MONOSODIUM GLUTAMATE
The main molecular backbone of the flavor enhancer Monosodium glutamate is the glutamic acid structure.
Glutamic acid is in the amino acid class. There is an amino group in the molecule. There are also two carboxylic acid-derived groups.
In the form of monosodium glutamate, one of the carboxyl groups has been transformed into the sodium salt form. This structure turns the flavor enhancer Monosodium glutamate into an ionic and highly water-compatible compound.
When dissolved in water, sodium ion and glutamate ion are formed. Glutamate ion is the main component of umami receptor activation.
Umami perception is particularly associated with metabotropic glutamate receptors and the T1R1/T1R3 receptor system.
The L-isomer form of the flavour enhancer Monosodium glutamate is important as the flavour-active form. D-glutamate does not provide the same sensory profile.
For this reason, food-grade Flavor enhancer Monosodium glutamate is based on L-glutamate in terms of stereochemical identity.
Flavor enhancer Monosodium glutamate can be found in the form of monohydrate in crystal form. Crystal water affects the calculation of molecular weight.
Therefore, a value of 187.13 g/mol corresponds to the monohydrate form. Lower molar mass is seen for the anhydrous form.
There is no long hydrophobic chain in the flavor enhancer Monosodium glutamate molecule. Therefore, it is not a lipophilic ingredient.
It is insoluble in oil phase. It is used as an aqueous phase ingredient. It can be directly dispersed as crystal or powder phase in dry seasoning blends.
Due to its high ionic character, the flavor enhancer Monosodium glutamate may have minor effects on water activity, ionic strength and taste interaction.
However, at normal flavour-enhancer levels, the main technological purpose is taste regulation.
Nucleotide synergy with glutamate is one of the most important formulation properties of the flavor enhancer Monosodium glutamate.
Disodium Inosinate (IMP) and Disodium Guanylate (GMP) can synergistically strengthen the glutamate receptor response.
Therefore, very low nucleotide levels can significantly increase the perceived umami effect of the flavor enhancer Monosodium glutamate.
Thanks to this synergy, the total amount of Flavour enhancer Monosodium glutamate can be optimised in some seasoning systems.
Yeast extract may also contain natural glutamate and nucleotide.
Therefore, Flavor enhancer Monosodium glutamate + yeast extract combination can provide complex savoury profile.
Key properties of flavor enhancer Monosodium glutamate at the molecular level:
Ionic sodium salt structure
L-glutamate configuration
High water solubility
Strong umami activity
Low oil solubility
IMP/GMP synergy
Providing the same glutamate ion as natural glutamate
Proteinaceous flavour enhancement
Savory flavour rounding
PHYSICAL AND CHEMICAL PROPERTIES OF MONOSODIUM GLUTAMATE
Flavor enhancer Monosodium glutamate is generally white or almost white crystalline powder.
General technical specifications:
Physical appearance: White crystalline powder
Color: White or off-white
Chemical name: Monosodium L-Glutamate
E number: E 621
INS: 621
CAS No: 142-47-2
EC No: 205-538-1
Monohydrate formula: C5H10NNaO5
Monohydrate molecular weight: 187.13 g/mol
Parent acid: L-Glutamic Acid
Water solubility: High
Oil solubility: Low/practically insoluble
Taste: Umami / savoury
pH behavior: Can be approximately near neutral in aqueous solution
Hygroscopicity: Should be evaluated depending on humidity conditions
Crystal size: May vary by grade
Purity: Must be verified through food-grade specification
Loss on drying: Must be checked through Supplier COA
Chloride: Must be within the food-grade limit
Sulphate: Must be within the food-grade limit
Heavy metals: Must comply with regulatory specifications
Optical purity: Must be compatible with L-glutamate identity
Granulation: Fine / standard crystal options can be found according to the application
The crystal size value of the flavour enhancer Monosodium glutamate is important for seasoning blending.
Very coarse crystal can form segregation in low amount seasoning premix.
Very fine powder can cause dusting and hygroscopic handling problems.
For this reason, the grade compatible with salt, sugar and spice blend particle-size distribution should be selected.
Dissolution rate is also important in dry mix systems such as instant soup or powder beverage seasoning.
The finer grade, the faster it dissolves.
However, storage caking behavior should be evaluated separately.
HOW DOES MONOSODIUM GLUTAMATE WORK AT THE MOLECULAR LEVEL?
When the flavor enhancer Monosodium glutamate is dissolved in water or saliva, the glutamate ion becomes free.
This interacts with glutamate tongue taste receptors.
Umami receptor activation increases savoury intensity.
This effect is particularly evident in proteinaceous, broth-like, meat-like, and fermented flavor contexts.
The flavor enhancer Monosodium glutamate gives a characteristic umami/salty-savory profile when tasted alone.
However, in real formulations, the effect is matrix-dependent.
If the salt level is low, the umami perception may be different.
If sugar or acid is high, the savoury balance may change.
Fat content can affect aroma release.
Protein hydrolysates and yeast extracts contribute to natural glutamate.
For this reason, the ideal Flavour enhancer should be optimised with the Monosodium glutamate level sensory panel.
The flavour-enhancing mechanism of flavour enhancer Monosodium glutamate is based on the taste receptor response rather than increasing flavour volatility.
Therefore, "flavoring" and "flavor enhancer" are not the same technical category.
Flavor enhancer Monosodium glutamate strengthens the perception of intensity and fullness of the existing food flavor.
Umami taste can also have an effect on salivation and mouthfulness perception.
For this reason, it can improve the feeling of "body" or "roundness" in soup and broth formulations.
If IMP/GMP is present, the glutamate receptor response is synergistically strengthened.
This synergy is especially used in instant noodles, chips seasoning, meat flavor and bouillon formulations.
The main functions of the flavor enhancer Monosodium glutamate at the formulation level:
Increasing umami
Savory increase intensity
Meaty note boost
Broth body to improve
Supporting saltiness perception
Providing flavor balance
Helping to reduce harsh aftertaste
Synergy with Yeast extract
Synergy with IMP/GMP
Support low-sodium formulation strategy
Contributing to seasoning cost optimization
IN WHICH SECTORS IS MONOSODIUM GLUTAMATE USED?
The main use of the flavor enhancer Monosodium glutamate is in the food industry.
Major sectors:
Instant noodles
Soup powders
Ready soups
Bouillon cubes
Bouillon powders
Gravy mixes
Sauces
Tomato-based sauces
Soy-based sauces
Seasoning blends
Snack seasonings
Potato chips
Corn snacks
Extruded snacks
Meat products
Processed meats
Sausages
Meat marinades
Chicken products
Ready meals
Frozen meals
Rice seasonings
Pasta seasonings
Dry spice blends
Restaurant seasoning mixes
Vegetable preparations
Canned foods
Fermented foods
Plant-based meat alternatives
Vegetarian savoury products
Umami seasoning systems
The flavor enhancer Monosodium glutamate is especially valuable in high-savoury formulations.
It is not the main use in sweet foods.
Bakery is not the typical flavour enhancer for sweet products.
However, it can be considered in savoury bakery products.
USE OF MONOSODIUM GLUTAMATE IN SOUP, SAUCE, AND BOUILLON APPLICATIONS
Soup and bouillon are the most classic uses of the flavor enhancer Monosodium glutamate.
In these systems, salt, hydrolyzed protein, yeast extract, vegetable powders, meat flavors and spices can be found together.
Flavor enhancer Monosodium glutamate broth increases body.
Vegetable or meat notes may become more prominent.
It can help improve flavor fullness in low-fat soup systems.
Bouillon formulations in the flavor enhancer Monosodium glutamate can reach high levels of use.
However, total sodium and regulatory limits should be evaluated together.
Flavor enhancer Monosodium glutamate is not a mere replacement.
It provides a different taste profile with sodium chloride.
Saltiness and umami interact with each other.
Therefore, while NaCl is reduced, the flavor enhancer Monosodium glutamate is not increased at the same rate.
Sensory optimization is required.
Flavor enhancer Monosodium glutamate in sauce formulations can also affect acidity and sweetness balance.
Since tomato sauce contains natural glutamate, it can be synergized with the additional flavor enhancer Monosodium glutamate.
Natural glutamate can be high in soy sauce, fermented sauce and yeast-extract systems.
In this case, the incremental benefit of the additional flavor enhancer Monosodium glutamate should be determined by the sensory panel.
Meaty depth and mouthfulness can be increased in gravy systems.
Taste release may be slower in systems with high starch and hydrocolloid.
Since the flavor enhancer Monosodium glutamate is water-soluble, it is easily dispersed into the aqueous phase.
Final salt distribution and pH homogeneity are important.
USES OF MONOSODIUM GLUTAMATE IN SNACK AND SEASONING APPLICATIONS
Snack seasoning is one of the important uses of flavor enhancer Monosodium glutamate.
It can be used in dry seasoning blend on potato chips, corn snacks, extruded products and coated nuts.
The flavour enhancer Monosodium glutamate crystal size is the important parameter here.
Similar to salt, sugar, spice powders and flavour carriers, particle size reduces the risk of segregation.
Fine Flavor enhancer Monosodium glutamate provides fast taste release.
However, very fine powder can create dusting.
If oil spray or binder is used for seasoning adherence, the flavor enhancer Monosodium glutamate particle surface wetting may be affected.
Flavor enhancer Monosodium glutamate is insoluble in fat.
Therefore, it binds to the product surface as a dry powder.
It dissolves with saliva during consumer consumption.
Flavor enhancer Monosodium glutamate in cheese seasoning can enhance the umami profile of cheese.
In BBQ seasoning, smoke, meat and spice can make the profile fuller.
Poultry flavor intensity can be increased in chicken seasoning.
The flavor enhancer Monosodium glutamate + IMP/GMP combination can be particularly powerful in snack seasoning.
Because of this synergy, nucleotides are used at low level.
Excessive Flavor enhancer Monosodium glutamate can create a bitter/harsh or overly savoury profile.
Therefore, the optimum level should be determined by sensory evaluation.
USE OF MONOSODIUM GLUTAMATE IN MEAT AND READY MEAL APPLICATIONS
Since processed meat products are naturally protein-rich, the glutamate flavor context is strong.
Flavor enhancer Monosodium glutamate can increase savoury intensity in sausage, meatball, burger, deli meat, marinated chicken and ready-meal systems.
When used in combination with meat flavourings, the meaty profile can be strengthened.
Flavor enhancer Monosodium glutamate can help in salt reduction projects.
However, the sodium content does not disappear completely because the flavor enhancer Monosodium glutamate also contains sodium.
Therefore, sodium calculation should be done in terms of nutrition label.
Within plant-based meat alternatives, the flavor enhancer Monosodium glutamate is particularly important.
Pea protein, soy protein or wheat protein-based systems may lack natural meat umami.
Flavor enhancer Monosodium glutamate, yeast extract and nucleotide combination can create meat-like savoury body.
However, if the "no added Flavor enhancer Monosodium glutamate" claim is targeted, additional Flavor enhancer Monosodium glutamate cannot be used.
Claim rules regarding the use of Yeast extract or hydrolyzed protein should be checked separately according to the destination country.
IS MONOSODIUM GLUTAMATE USED IN FOOD, COSMETICS AND PHARMACEUTICAL APPLICATIONS?
Flavor enhancer Monosodium glutamate is mainly food flavor enhancer.
E 621 / INS 621 is used with food additive ID.
It is not the main commercial use as a cosmetic raw material.
It is not used as a pharmaceutical active ingredient.
Glutamate salts can be found in scientific or technical formulations for other purposes.
However, the food-grade Flavour enhancer Monosodium glutamate should not be assumed to be cosmetic-grade or pharmaceutical-grade.
The exact additive regulation should be followed in food application.
FDA added Flavor enhancer Monosodium glutamate recognizes it as GRAS.
JECFA rates the group ADI value for the flavour enhancer Monosodium glutamate as "not specified".
These expressions do not mean unlimited and uncontrolled use.
Good Manufacturing Practice and category-based regulatory requirements apply.
Labeling is also important.
The FDA added flavor enhancer Monosodium glutamate requires it to be explicitly written as "monosodium glutamate" in the ingredient list.
The flavour enhancer Monosodium glutamate should not be disguised under the generic term "spices" or "flavouring".
INDUSTRIAL APPLICATIONS OF MONOSODIUM GLUTAMATE
Flavor enhancer Monosodium glutamate is used as a flavor system component in the industry.
Major functions:
Umami enhancement
Savory enhancement
Meaty-flavour boosting
Broth-body improvement
Seasoning formulation
Bouillon formulation
Snack seasoning
Instant noodle seasoning
Ready-meal formulation
Sauce flavour balancing
Meat product flavour enhancement
Plant-based meat flavour development
Salt-reduction support
IMP/GMP synergy
Yeast-extract synergy
Dry blending
Wet sauce incorporation
In industrial systems, the following parameters should be evaluated:
Food-grade identity
E621 compliance
INS621 compliance
Assay
Moisture
Loss on drying
Crystal size
Bulk density
Flowability
Colour
Odor
Solubility
pH
Chloride
Sulphate
Heavy metals
Optical purity
Foreign matter
If microbiological quality is required
Packaging
Caking tendency
Storage stability
TDS
SDS
COA
Halal/Kosher if required
If GMO / fermentation declaration is required
Allergen statement
Country of origin
WHAT PROBLEMS CAN MONOSODIUM GLUTAMATE HELP SOLVE?
Poor flavor of the soup
Flavor enhancer: Monosodium glutamate can increase savoury and umami intensity.
Meat flavor is not pronounced enough
It can strengthen the meaty profile by providing synergy with meat flavor.
Whether the snack seasoning is flat or one-dimensional
Flavor enhancer Monosodium glutamate can provide overall savoury depth.
Decreased flavor when salt is reduced
The flavour enhancer Monosodium glutamate can support savoury perception as part of the salt-reduction strategy.
However, sodium calculation should be done.
Weak meaty character of plant-based meat product
Flavor enhancer Monosodium glutamate can provide meat-like depth with yeast extract and flavourings.
Bouillon's lack of body feel
Umami and savoury fullness can be enhanced.
Yeast extract is expensive
In some formulations, the flavor enhancer Monosodium glutamate + lower yeast extract combination can provide an economical flavor design.
This should not be applied without testing sensory equivalence.
Excessive taste of flavour-enhancing Monosodium glutamate
Adding more Flavor enhancer Monosodium glutamate is not the solution.
Dosage should be reduced and salt/flavour/nucleotide balance should be rearranged.
Poor perception of umami in acidic product
The pH and flavour matrix must be re-optimised.
Not every taste problem is solved by increasing the Flavor enhancer Monosodium glutamate alone.
Aroma, salt, sugar, acid, fat and texture should be evaluated together.
THINGS TO CONSIDER WHEN USING MONOSODIUM GLUTAMATE
Food-grade quality must be verified.
E621 identity must be verified.
INS621 should be checked.
The exact CAS/hydrate form should be verified with supplier documentation.
Assay should be checked.
Loss on drying should be checked.
Crystal size should be selected according to the application.
Dry blend segregation should be evaluated.
Dissolution should be checked.
Total sodium calculation should be done.
It should be optimized together with the salt level.
If IMP/GMP is used, synergy should be considered.
Concomitant use with Yeast extract should be confirmed with the sensory panel.
Excessive dosage should be avoided.
The final food category regulation should be checked.
Ingredient labeling requirements should be verified.
The "No added Flavour Enhancer Monosodium glutamate" claim rules should be checked by destination country.
Glutamate and gluten should not be mixed.
It should be protected from moisture during storage.
TDS should be examined.
SDS should be examined.
The COA should be checked.
If there is a Halal/Kosher requirement, the certificates should be checked.
INITIAL FORMULATION APPROACHES FOR MONOSODIUM GLUTAMATE
The following examples are laboratory initial formulations prepared to show how the flavor enhancer Monosodium glutamate can be evaluated in different savoury food systems.
These are not verified commercial prescriptions.
All percentages are the percentage by weight of the final mixture.
Each sample adds up to 100%.
The level of use should be optimized according to the target food category, sensory target and legislation.
EXAMPLE 1: Flavor enhancer Monosodium glutamate INSTANT NOODLE SEASONING
Objective: To evaluate the effect of the flavor enhancer Monosodium glutamate on umami, saltiness, and chicken-like savoury intensity in noodle seasoning.
Starting components:
Salt: 38.0%
Monosodium Glutamate: 12.0%
Sugar: 12.0%
Maltodextrin: 12.0%
Chicken flavour: 8.0%
Yeast extract: 5.0%
Garlic powder: 3.0%
Onion powder: 3.0%
Spice blend: 3.0%
Disodium Inosinate/Guanylate blend: 0.5%
Acid/flavour balancer: 0.5%
Anti-caking agent: 1.0%
Vegetable powder: 2.0%
Total: 100%
Application approach:
All dry ingredients are prepared in a similar particle-size range.
The flavor enhancer is made from Monosodium glutamate and salt premix.
Flavour and spice ingredients are added gradually.
Low-dose nucleotide blend is distributed homogeneously.
Dry mixing is completed.
A fixed seasoning dosage is used per specific portion of noodles.
Saltiness, umami, chicken flavor and aftertaste are evaluated with a sensory panel.
The level of the flavour enhancer Monosodium glutamate can be screened, for example, in the range of 8% / 12% / 16%.
The nucleotide level can be optimized in a separate factorial design.
EXAMPLE 2: Flavor enhancer Monosodium glutamate SOUP/BOUILLON POWDER
Objective: To determine the effect of the level of flavor enhancer Monosodium glutamate on broth body, savoury depth and overall flavour balance.
Starting components:
Salt: 30.0%
Monosodium Glutamate: 15.0%
Maltodextrin / carrier: 18.0%
Starch: 10.0%
Yeast extract: 7.0%
Vegetable powder: 6.0%
Fat powder: 4.0%
Meat or vegetable flavour: 4.0%
Sugar: 2.0%
Onion powder: 1.5%
Garlic powder: 1.0%
Spice blend: 0.8%
Disodium Inosinate/Guanylate blend: 0.4%
Anti-caking agent: 0.3%
Total: 100%
Application approach:
Carrier, starch, salt and flavor enhancer Monosodium glutamate are pre-blended.
Yeast extract and flavour system are added.
Fat powder is distributed homogeneously.
Spices are added gradually.
A standard amount of powder is dissolved in hot water.
Umami intensity, broth body, saltiness, and aftertaste are compared.
Flavor enhancer Monosodium glutamate can be screened 10% / 15% / 20%.
Total sodium and sensory balance are evaluated together.
EXAMPLE 3: Flavor enhancer Monosodium glutamate SAVOURY SNACK SEASONING
Purpose: To evaluate the effect of the flavor enhancer Monosodium glutamate on umami and flavour impact in chips or extruded snack seasoning.
Starting components:
Salt: 32.0%
Monosodium Glutamate: 10.0%
Maltodextrin: 18.0%
Cheese / BBQ / meat flavour powder: 15.0%
Sugar: 8.0%
Yeast extract: 5.0%
Onion powder: 3.0%
Garlic powder: 2.5%
Paprika / spice blend: 2.5%
Acidulant: 1.5%
Disodium Inosinate/Guanylate blend: 0.5%
Anti-caking agent: 1.0%
Colour / vegetable powder: 1.0%
Total: 100%
Application approach:
Flavor enhancer Monosodium glutamate, salt and maltodextrin carrier blend are prepared.
Flavour powder and spices are added.
Nucleotide premix is very well distributed.
Seasoning is applied on standard oil-coated snack with fixed dosage.
Seasoning adhesion is checked.
First bite impact, umami, saltiness, overall flavor and aftertaste are evaluated.
The flavour enhancer Monosodium glutamate level is comparable in the range of 6% / 10% / 14%.
ALTERNATIVES AND COMPARISON OF MONOSODIUM GLUTAMATE
When choosing a flavor-enhancing Monosodium glutamate alternative, the question "does it provide umami?" is not enough.
Flavour intensity, natural positioning, sodium content, cost, labelling, nucleotide content and sensory complexity should be evaluated together.
MONOSODIUM GLUTAMATE AND YEAST EXTRACT
Yeast extract is a natural fermentation-derived flavour ingredient.
It may contain free glutamate and some nucleotide compounds.
The flavor enhancer Monosodium glutamate is a single defined glutamate salt.
Yeast extract provides a more complex flavour profile.
Meaty can provide roasted or fermented notes.
Flavor enhancer Monosodium glutamate gives cleaner and more controlled umami enhancement.
Yeast extract generally has a higher kg cost.
Flavor enhancer Monosodium glutamate + yeast extract combination can provide a balanced system in terms of cost and flavor.
The two products should not be substituted one-to-one.
MONOSODIUM GLUTAMATE AND DISODIUM INOSINATE / DISODIUM GUANYLATE
IMP and GMP nucleotide flavour enhancers.
They show very strong synergy with the flavor enhancer Monosodium glutamate.
For this reason, IMP/GMP Flavor enhancer is a synergistic partner rather than a direct alternative to Monosodium glutamate.
Nucleotides can be used at very low levels.
Kg prices may be higher than flavor enhancer Monosodium glutamate.
The flavour enhancer Monosodium glutamate + I+G combination is particularly powerful for snacks, noodles and bouillons.
Using I+G alone does not provide the same flavour profile.
MONOSODIUM GLUTAMATE AND HYDROLYZED VEGETABLE PROTEIN
Hydrolyzed Vegetable Protein, i.e. HVP, is a flavor ingredient containing amino acids and peptides.
It can provide natural savoury and cooked profile.
May contain free glutamate.
The flavor enhancer Monosodium glutamate gives cleaner and more specific umami.
HVP can provide more complex flavors and brown/cooked notes.
Allergen and source protein considerations may be more important in HVP.
The two products can also be used together.
MONOSODIUM GLUTAMATE AND MONOPOTASSIUM GLUTAMATE
Monopotassium Glutamate is the potassium salt of glutamic acid.
The flavor enhancer Monosodium contains glutamate sodium, while monopotassium contains glutamate potassium.
Potassium glutamate may be considered for sodium-reduction formulations.
However, potassium salts may have the risk of different bitter/metallic taste.
Cost and availability may be different.
Direct gram-for-gram sensory equivalence should not be assumed.
MONOSODIUM GLUTAMATE AND NATURAL GLUTAMATE SOURCES
Tomato powder, parmesan-type cheese, mushroom powder, kombu, soy sauce powder and fermented ingredients are natural sources of free glutamate.
These raw materials provide aroma, color and other nutrients as well as umami.
The flavor enhancer Monosodium glutamate provides more concentrated and neutral flavor-enhancement.
Natural glutamate sources can be preferred in the natural-label strategy.
However, the high level of usage can change the cost and flavour profile.
Flavor enhancer Monosodium glutamate can be more standardized and cost-efficient.
QUALITY CONTROL AND PURCHASING CRITERIA FOR MONOSODIUM GLUTAMATE
Recommended information to review before purchasing:
Full product name
Monosodium L-Glutamate identity
Food-grade status
E621 compliance
INS621
CAS No
Hydrate form
Assay
Moisture
Loss on drying
Crystal size
Particle-size distribution
Appearance
Colour
Odor
Taste
Solubility
pH
If specific rotation is required
Chloride
Sulphate
Iron
Lead
Arsenic
Mercury
Heavy metals
Foreign matter
If microbiological limits are required
Bulk density
Flowability
Caking tendency
Production process
Fermentation source
If GMO statement is required
Allergen statement
Halal certificate
Kosher certificate
Country of origin
Shelf life
Packaging
Batch number
Manufacturing date
TDS
SDS
COA
Regulatory declaration
E621 identity alone is not enough when changing suppliers.
Crystal size can change the seasoning blending behavior.
Moisture can affect the risk of caking.
Purity and colour can have an impact on final product appearance.
Fermentation source and GMO documentation may be important according to customer requirements.
STORAGE AND HANDLING OF MONOSODIUM GLUTAMATE
Flavor enhancer Monosodium glutamate should be stored in a dry and clean environment.
It must be protected from moisture.
Once the packaging is opened, it must be resealed.
High humidity should be avoided against the risk of hygroscopic/caking.
It should be protected from direct water contact.
It may be useful not to keep it in the same open environment as strong odor raw materials.
Food-grade storage should be applied.
Pest control should be ensured.
Packaging integrity must be maintained.
FIFO should be applied.
Lot traceability must be ensured.
Crystal breakage and powder generation should be checked during transportation.
Food-contact compliance should be verified in bulk or big-bag handling systems.
Shelf life supplier should be checked via TDS.
Transport classification must be verified from the exact SDS.
MONOSODIUM GLUTAMATE SAFETY INFORMATION
Flavor enhancer Monosodium glutamate is generally used as a food-grade flavor enhancer.
FDA added Flavor enhancer Monosodium glutamate GRAS accepts.
JECFA group has rated ADI as "not specified".
These evaluations are within the framework of normal food use.
The FDA states that some people have reported sensitivity to the Flavor enhancer Monosodium glutamate, but reactions have not been consistently demonstrated in controlled studies.
The FDA has reported in its past evaluations that some susceptible people may experience short-term mild symptoms if 3 g or more of the Flavor enhancer Monosodium glutamate is taken at once without food.
The amount of added Flavour enhancer Monosodium glutamate in the typical food serving is lower than this.
Dust control should be applied during industrial handling.
Heavy powder inhalation should be avoided.
In case of contact with eyes, proper hygiene should be practiced.
Food manufacturing GMP rules should be followed.
Exact occupational safety information should be obtained from supplier SDS.
WHAT TO CONSIDER WHEN BUYING MONOSODIUM GLUTAMATE?
First, the application must be determined.
Is noodle seasoning?
Snack seasoning?
Soup powder?
Bouillon?
Meat product?
Sauce?
Plant-based meat?
Crystal size should be selected according to the requirement application.
Fine powder can be advantageous for quick dissolution.
Coarser crystal may be more suitable for dry-blend flow.
The following information should be clarified before ordering:
Food-grade requirement
E621 requirement
INS621 requirement
Minimum assay
Particle size
Crystal grade
Colour
Moisture
Heavy-metal limits
Fermentation source
GMO requirement
Allergen statement
Halal requirement
Kosher requirement
Country of origin
Packaging
Estimated order quantity
Shelf life
TDS
SDS
COA
The price of the flavor enhancer Monosodium glutamate should not be evaluated only by the kg price.
Umami efficiency, required dosage and IMP/GMP synergy affect the actual flavour cost.
When comparing it with the Yeast extract alternative, flavor, complexity and usage level should be evaluated together.
MONOSODIUM GLUTAMATE SUPPLY FROM ATAMAN KIMYA
Monosodium Glutamate; Defined as E621 / INS621, it is a food-type flavor enhancer used to increase umami and overall flavor intensity in soups, sauces, snacks, noodles, bouillon, meat products and different savoury food systems.
Companies that want to get information about the supply of Monosodium Glutamate from Ataman Kimya can request product suitability, current supply conditions, packaging options and price information by sharing their usage areas, target crystal size and technical quality requirements.
The current stock status, manufacturer, origin, food-grade status, assay value, particle size, packaging and technical specifications of the product should be confirmed before ordering.
Sharing the following information in the request for quotation makes it easier to evaluate the correct Flavor enhancer Monosodium glutamate grade:
Use sector
Final product type
Food-grade requirement
E621 requirement
Target particle size
Fine / standard crystal preference
Minimum assay
Moisture limit
Halal requirement
Kosher requirement
GMO statement
Allergen statement
Estimated order quantity
Packaging preference
The need for TDS
The need for SDS
The need for COA
Need for regulatory documentation
FREQUENTLY ASKED QUESTIONS ABOUT MONOSODIUM GLUTAMATE
What is Monosodium Glutamate?
It is flavour enhancer, which is the monosodium salt form of L-glutamic acid.
What is flavor enhancer Monosodium glutamate short for?
Monosodium Glutamate.
What is the E number?
E 621.
What is an INS number?
INS 621.
What is the CAS number of the flavor enhancer Monosodium glutamate?
142-47-2 is commonly used. In monohydrate sources, 6106-04-3 can also be seen.
What is its molecular formula?
C5H10NNaO5 for the monohydrate form.
What is molecular weight?
About 187.13 g/mol for the monohydrate form.
What does flavor enhancer Monosodium glutamate do?
It increases umami and savoury flavor intensity in food.
Is flavor enhancer Monosodium glutamate flavoring?
Its main technical function is the flavor enhancer; it is not a substitute for a specific chicken, beef or cheese flavor profile.
Does flavor enhancer Monosodium glutamate provide umami?
Yes.
Is flavor enhancer Monosodium glutamate soluble in water?
Yes, it shows high resolution.
Is flavor enhancer Monosodium glutamate fat soluble?
It is practically not an oil-phase ingredient.
In which foods is flavor enhancer Monosodium glutamate used?
Soups, sauces, snacks, noodles, bouillon, meat products, ready meals and seasoning blends.
Is flavor enhancer Monosodium glutamate the same as yeast extract?
Yeast extract is a complex flavour ingredient; Flavour enhancer is Monosodium glutamate defined glutamate salt.
Is flavor enhancer Monosodium glutamate a mere replacement?
It is not a complete pure replacement, but it can provide flavor support in some sodium-reduction formulations.
Does flavor enhancer Monosodium glutamate contain gluten?
Glutamate and gluten are different structures. Flavor enhancer Monosodium glutamate itself is not gluten.
Is the flavor enhancer Monosodium glutamate safe?
FDA has added Monosodium glutamate as GRAS to the flavor enhancer. JECFA group has rated ADI as "not specified".
Does the flavor enhancer Monosodium glutamate need to be written on the label?
According to the FDA, added flavor enhancer Monosodium glutamate must be clearly stated as "monosodium glutamate" in the ingredient list.
Is flavor enhancer Monosodium glutamate the same as natural glutamate?
Formed when the flavor enhancer Monosodium glutamate dissolves in water, glutamate is chemically identical to natural free glutamate in food.
Can the flavor enhancer Monosodium glutamate be produced by fermentation?
Yes, modern industrial production is commonly based on the production of glutamic acid by carbohydrate fermentation.
Can flavor enhancer Monosodium glutamate be vegan?
Fermentation source and processing aids should be verified; supplier documentation should be taken as basis.
Is there a Halal Flavor enhancer Monosodium glutamate?
Yes, suitable certified grades can be found.
Is there a Kosher Flavor enhancer Monosodium glutamate?
Yes, it must be verified with supplier certificate.
What documents should be requested?
TDS, SDS, COA and Halal/Kosher/GMO/Allergen declarations if necessary.
MONOSODIUM GLUTAMATE – TECHNICAL SUMMARY
Monosodium Glutamate, commonly known as Flavor enhancer Monosodium glutamate, is the monosodium salt form of L-glutamic acid and is the classic flavor enhancer used in the food industry to increase savoury flavor intensity with umami.
In the European and Codex systems, it is identified as E 621 / INS 621.
JECFA classifies Monosodium L-Glutamate as a flavor enhancer and specifies the group ADI value as "not specified".
FDA added Flavor enhancer Monosodium glutamate GRAS accepts.
When the flavor enhancer Monosodium glutamate dissolves in water, it forms sodium and glutamate ions.
Glutamate interacts with umami taste receptors to increase savoury depth in soups, sauces, snacks, noodles, bouillon, meat products, and ready meals.
The flavour enhancer Monosodium glutamate shows strong synergy with nucleotide flavour enhancers such as IMP and GMP.
It can be used with natural savoury ingredients such as yeast extract and hydrolyzed protein.
The molecular formula for the monohydrate form is C5H10NNaO5 and the molecular weight is approximately 187.13 g/mol.
Common CAS No is 142-47-2; 6106-04-3 can also be seen in some food-additive monohydrate sources.
Flavor enhancer Monosodium glutamate is a white or almost white crystalline powder. It has high solubility in water. It is not soluble in the oil phase.
The crystal size, moisture, assay and impurity specifications of the commercial product should be checked against supplier grade. The optimum level of use of the flavour enhancer Monosodium glutamate is not a single percentage for whole foods.
Product category, salt level, natural glutamate, nucleotide system, flavour profile and legislation should be evaluated together.
Flavor enhancer Monosodium glutamate is not a mere replacement, but may be a flavour-support component of the sodium-reduction strategy in some formulations.
When purchasing the flavor enhancer Monosodium glutamate, food-grade identity, E621/INS621 compliance, assay, loss on drying, crystal size, heavy metals, Halal/Kosher/GMO/Allergen documentation, TDS, SDS and COA must be verified together.
Companies planning to supply Monosodium Glutamate from Ataman Kimya are recommended to confirm the current product and offer conditions by sharing the final application, target crystal size, usage level, certification requirement and technical document expectations.
