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Glucono-delta-lactone (GdL) is a six-membered cyclic lactone formed by the intramolecular esterification of D-gluconic acid. It provides gradual, relatively gentle acidification in food formulations due to its conversion to gluconic acid over time when dissolved in water. It has the appearance of a white, almost odorless crystalline powder and is considered as an E575 food additive in the appropriate quality class.
Glucono-delta-lactone (GdL) is used especially in protein coagulation in silken tofu production, pH control in some cheese and dairy products, chemical embossing systems in bakery, acidity adjustment in prepared food and processed food applications. Acidification occurs over time rather than suddenly, which can create a processing window before mixing and filling.
Glucono-delta-lactone (GdL) does not exhibit the same behavior as the direct addition of citric or lactic acid. The temperature of the water, the water activity of the product, the buffering capacity, the particle size, the mixing time, the protein and salt content determine the effective acidification rate. Therefore, the amount of application alone does not guarantee the target pH result.
The typical chemical ID for glucono-delta-lactone (GdL) is given as CAS 90-80-2, EC 202-016-5, formula C6H10O6, and molar mass of approximately 178.14 g/mol. The purity, dissolution properties, and particle distribution of the commercial batch must be verified from the product specification of the grade supplied.
Food additive legislation during the use of glucono-delta-lactone (GdL) should be examined on a product and market basis. Food-grade quality class, allergen/vegan declarations, impurity limits and process hygiene are checked separately. The prepared formulations are not a substitute for final product safety and shelf-life tests.
WHAT IS GLUCONO-DELTA-LACTONE (GDL)?
Glucono-delta-lactone (GdL) is the delta lactone of gluconic acid; when it comes into contact with water, the lactone ring opens and gluconic acid is formed. Since this reaction allows the pH drop to develop slowly, it can give different processing advantages than adding strong acid directly.
Glucono-delta-lactone (GdL) is not chemically a sugar; it is related to gluconic acid, the oxidation product of glucose. Its main role in the food industry is not to sweeten, but to manage acidity, gel formation and, in some processes, the timing of outgassing.
Glucono-delta-lactone (GdL) is stored as a powder in dried and moisture-protected packaging. Since the distribution of active chemical species changes over time after addition to water, the moment of solution preparation and duration of use should be specified in the procedures.
Glucono-delta-lactone (GdL) can be named in the context of both food and cosmetic ingredients; however, the food grade of a product is not automatically equivalent to cosmetic quality or pharmaceutical grade. The intended use in the supply document is decisive.
COMMON PRODUCT AND CHEMICAL NAMES
Glucono-delta-lactone (GdL)
D-Glucono-1,5-lactone
D-Gluconic acid delta-lactone
Gluconolactone
Delta-gluconolactone
E575 / INS 575 (food additive numbers; not trade grade name)
CAS NO, EC NO AND CHEMICAL IDENTIFICATION
Product Name: Glucono-delta-lactone (GdL)
CAS No: 90-80-2
EC/EINECS No: 202-016-5
Chemical formula: C6H10O6
Molar mass: About 178.14 g/mol
Chemical class: Carbohydrate derivative, cyclic ester (lactone)
Food additive code: E575 / INS 575
Main conversion product: D-gluconic acid
Typical commercial form: White crystalline powder
Solubility in water: Good; hydrolysis occurs over time after dissolution
Major function: Controlled acidification, pH regulation, coagulation in certain applications, and relief system acid component
Note: Food, pharmaceutical and cosmetic quality classes should not be considered the same; the relevant certificate and specification should be checked for each.
CHEMICAL STRUCTURE AND MOLECULAR PROPERTIES OF GLUCONO-DELTA-LACTONE (GDL)
Glucono-delta-lactone (GdL) is a six-membered cyclic ester formed from the intramolecular interaction of the C1 carboxylic acid group and the C5 hydroxyl group. The hydroxyl groups on the ring support the molecule's high polarity and water solubility.
When glucono-delta-lactone (GdL) is taken into water, the C6H12O7 formula gluconic acid is formed by opening the ring. Hydrolysis stoichiometry involves one water molecule per lactone; the rate of this conversion depends on environmental conditions. Acidification is determined by the decomposition of the gluconic acid formed and the buffer balance of the system.
In protein systems containing glucono-delta-lactone (GdL), when the pH approaches the isoelectric region, electrostatic repulsion may decrease and coagulation/gelation may occur. In tofu, this controlled acidification is the decisive effect; protein concentration and thermal history also affect the microstructure.
Glucono-delta-lactone (GdL) may contribute to the retention of some metal ions in solution as a result of conversion to gluconic acid; however, the complexation behavior depends on the pH, ion type and the chelator being compared. This substance should not be considered a strong and in all conditions equivalent EDTA substitute.
PHYSICAL AND CHEMICAL PROPERTIES
Appearance: White or near-white crystalline powder.
Odor: Almost odorless.
Molecular formula: C6H10O6.
Molar mass: Approximately 178.14 g/mol.
CAS: 90-80-2.
EC: 202-016-5.
Behavior in water: Soluble and slowly hydrolyzes to gluconic acid in the presence of water.
Solubility in alcohol: More limited than in water.
Thermal property: A degraded melting/decomposition behavior of the welds is reported around 153 °C; it should not be considered as a single precise process temperature.
Acidity: Dry lactone is not the acid itself; the solution pH decreases as hydrolysis proceeds.
Particle size: May vary with commercial grade; affects dissolution and acidification kinetics.
Moisture sensitivity: It is recommended to protect it from heat and moisture.
Note: The data are related to the general substance definition. The COA of the batch should be examined for purity, moisture, impurity, grain distribution and shelf life.
HOW DOES GLUCONO-DELTA-LACTONE (GDL) WORK AT THE MOLECULAR LEVEL?
When glucono-delta-lactone (GdL) is applied, it first dissolves, then the ester bond in the molecule is opened with water. The resulting gluconic acid introduces protons into the environment and initiates the pH decrease. This process may be delayed compared to direct acid dosing and may provide time for filling or homogeneous mixing.
When preparing tofu with glucono-delta-lactone (GdL), soy proteins are first dispersed in the liquid. As acidification develops, electrostatic repulsion between proteins decreases; network formation is observed under appropriate temperature and solid material conditions. This network retains water and contributes to the texture of silken tofu.
If a baking mixture is prepared with glucono-delta-lactone (GdL), the acid formed can react with sodium bicarbonate to release carbon dioxide. Since the rate of production of the gas depends on the amount of water and temperature of the dough, the product rise is not identical to that of other risers.
The glucono-delta-lactone (GdL) effect is not only chemical consumption, but also a time-dependent process. The same dose can give different final pH in foods with different buffering power. Therefore, both the pH at the time of addition and after waiting and the final texture should be monitored together.
CLASSIFICATION OF ORGANIC ACID AND LACTONE ACIDIFIER SYSTEMS
Glucono-delta-lactone (GdL) exists in the form of lactone, unlike citric, lactic, malic, and acetic acids used directly. Citric acid lowers pH more rapidly in most aqueous mixtures, while lactone's action can be gradual due to hydrolysis kinetics.
Glucono-delta-lactone (GdL) belongs to the same chemical family as gluconic acid and gluconate salts. However, gluconic acid is a ready-made acid form in aqueous media, while sodium gluconate is a salt and has different pH and complexation functions.
The use of glucono-delta-lactone (GdL) is defined by different functions as coagulant, acidity regulator and baking acid. These are not the same concept: acid-induced protein network formation is at the forefront in tofu application, gas production with carbonate in baking.
IN WHICH SECTORS IS GLUCONO-DELTA-LACTONE (GDL) USED?
Glucono-delta-lactone (GdL) is researched or used in the food industry for tofu, some soft cheeses, bakery products, sauces, acidity-regulated convenience products and related processes. Eligibility depends on local food additive legislation and conditions of use in the product category.
Glucono-delta-lactone (GdL) can be found in some skin care products under the name gluconolactone INCI in the cosmetics industry; acidification, exfoliation and humectant functions are evaluated in relation to product pH and formulation. It should not be assumed that food grade automatically meets cosmetic legislation and purity requirements.
When glucono-delta-lactone (GdL) is to be considered as an excipient in drugs or medical products, a pharmacopoeia, quality system and relevant regulatory file are required. Authorization in food does not automatically create a license for pharmaceutical use.
APPLICATIONS OF TOFU AND SOY PROTEIN GEL
Glucono-delta-lactone (GdL) is one of the common controlled acid coagulants in silken tofu production. The proteins in soy milk can form a three-dimensional network by acidification. Tissue density varies with the protein concentration, thermal history, and shear severity of the soy milk used.
Glucono-delta-lactone (GdL) should be homogeneously distributed into soy milk and mechanical degradation should be minimized once coagulation has started. Stirring or waiting for long periods of time may disrupt the gel texture after acidification has progressed too far. Manufacturer application information indicates that specific granulation and solubilization methods are important.
In the use of glucono-delta-lactone (GdL), the goal is not only the lowest pH; water release, gel strength, fracture behavior, appearance, taste and microbiological safety are monitored together. Its use with mineral coagulants such as calcium sulfate requires a separate recipe design.
The effect of glucono-delta-lactone (GdL) may vary in different soy varieties and protein contents. Repeated experimentation with the same raw materials is required before proceeding to commercial formulation.
DAIRY AND CHEESE APPLICATIONS
Glucono-delta-lactone (GdL) can be used to lower the pH in a controlled manner in some cheese and milk-based products. Acidification affects the structuring and water-binding properties of milk proteins; these effects depend on temperature, calcium balance and the composition of the milk used.
If glucono-delta-lactone (GdL) is to be used as a substitute for culture fermentation, the taste, texture, and legal description of the product should be examined separately. The acidified product does not always have the same sensory and microbial properties as the fermented product.
When putting glucono-delta-lactone (GdL) into production, the pH-time curve, coagulation time, serum separation, moisture, sensory acidity, and shelf life are recorded. The appropriate food additive category and labeling scheme should be validated against the target market.
BAKING, SAUCES AND OTHER FOOD APPLICATIONS
Glucono-delta-lactone (GdL) can be paired with sodium bicarbonate as a slow-acting acid component in dough and baking systems. The gas production profile varies with the humidity, temperature, and acid-base balance of the mixture. The utilization rate cannot be transferred as a fixed value to all cake and dough types.
Controlled pH reduction in glucono-delta-lactone (GdL) sauces and prepared foods can affect the distribution of acid taste. However, creating a low pH alone is not a guarantee of preservative efficacy or long shelf life; microbiological validation is required.
Glucono-delta-lactone (GdL) is evaluated in some countries for its acidification function in meat and curing applications. Meat compositions, nitrite-containing systems and permits are different by country, so generalization should not be made without specific regulations.
THE IMPORTANCE OF HYDROLYSIS RATE, PH AND PARTICLE SIZE
Central to glucono-delta-lactone (GdL) performance is the kinetics of water dissolution and hydrolysis to gluconic acid. Finer particles can contribute to faster dissolution; however, the final hydrolysis rate does not depend solely on particle size.
As the glucono-delta-lactone (GdL) solution temperature rises, the reaction rate is expected to change. Acidification assessment must be done with a measured pH-time profile; it should not be interpreted kinetically with a single final pH value.
Glucono-delta-lactone (GdL) may show a different pH change in a strongly buffered milk or protein mixture than measured in the same amount of pure water. Solids, ionic strength, initial pH, acid-consuming components, and dwell time should be recorded.
IS GLUCONO-DELTA-LACTONE (GDL) USED IN FOOD, COSMETICS AND PHARMACEUTICAL APPLICATIONS?
The glucono-delta-lactone (GdL) food additive is known as E575/INS 575. Acid, acidity regulator, raising and sequestrant function classes have been reported in the WHO/JECFA database. The JECFA assessment includes the phrase "not specified" for the acceptable daily intake group; this does not mean unlimited use in every product.
Glucono-delta-lactone (GdL) In the EU, food additive categories and conditions of use are subject to relevant legislation; the manufacturer's "generally permitted" description does not eliminate restrictions in special categories. Good manufacturing practices are essential for use in the USA under 21 CFR 184.1318.
Glucono-delta-lactone (GdL) can be seen in cosmetics as gluconolactone; suitability for use should be considered according to INCI, cosmetic safety assessment, formulation pH, and product category. Pharmaceutical quality and licensing are also required for the drug.
PERFORMANCE PARAMETERS IN INDUSTRIAL APPLICATIONS
The primary process measurements for glucono-delta-lactone (GdL) are initial pH, pH-time curve, time to reach target pH, titration acidity, temperature, dissolution time, and post-acidification texture. It is not enough to look at a single dose rate.
Gel hardness, fracture tension, syneresis and protein yield in glucono-delta-lactone (GdL) tofu trials; dough pH, gas production, volume, pore distribution and sensory qualities in bakery; coagulation, serum release and microbiological stability in dairy systems are evaluated.
When comparing different particle grades of glucono-delta-lactone (GdL), the thawing method, mixing times and sample geometry should be fixed. Measurement results should be supported by repeated samples and appropriate statistical method.
WHAT PROBLEMS CAN GLUCONO-DELTA-LACTONE (GDL) HELP SOLVE?
When acid is added, the product coagulates suddenly: It can help spread acidification over time due to controlled hydrolysis.
Tofu gels early before filling: Controlled dispersion and filling can be designed in the appropriate process window.
Acid taste is perceived sharply: Conversion to gluconic acid may provide a softer sensory profile in some systems; it should be tested on a product-by-product basis.
The pH in the cheese system is not homogeneous: The pH distribution can be improved by evaluating the mixing and slow acidification design.
Chemical relief occurs very early: The lagging acid function paired with the appropriate base can be tried.
The gel releases water: Syneresis can be reduced by optimizing the protein, salt, temperature and acidification profile together.
Texture variable between product batches: Particle class, dissolving time, dose and thermal history can be standardized.
THINGS TO CONSIDER WHEN USING GLUCONO-DELTA-LACTONE (GDL)
Glucono-delta-lactone (GdL) should be stored dry in the original sealed package as its hydrolysis behavior may change when it comes into contact with moisture. Prolonged soaking of pre-prepared aqueous solutions may alter the delayed acidification effect expected during the process.
Even if the use of glucono-delta-lactone (GdL) lowers the pH of the food product, it does not provide sterilization, microbial safety, or shelf-life guarantees on its own. Raw material control, heat treatment, and hygiene validation are important.
Glucono-delta-lactone (GdL) may lead to over-acidification, brittle gel and taste change with overdose or long processing time, especially in formulations containing protein. Standard pH-time and texture tests should be performed on a pilot scale.
It should not be assumed that the product sold for glucono-delta-lactone (GdL) food can be used unlimitedly in a cosmetic or pharmaceutical environment. In the new application, the quality certificate and regulatory compliance must be verified.
GEL STRENGTH, RHEOLOGY AND TESTING APPROACHES
In protein gels formed with glucono-delta-lactone (GdL), hardness, fracture force and elastic behavior can be measured with a texture analyzer. Using the same sample temperature and size is mandatory for comparability of results.
Increasing the dose of glucono-delta-lactone (GdL) does not always mean better gel. Too low pH can negatively affect the structure and water retention of the protein network. Therefore, the optimal level is determined by the characteristics of the actual food system.
Rotational viscosity and rheological time screening in fluids using glucono-delta-lactone (GdL) can help to show the onset of coagulation more precisely. The method should be reported, as shear during measurement may affect gel formation.
CONTROL VARIABLES IN PROCESS DESIGN
In glucono-delta-lactone (GdL) trials, dose, mixing temperature, initial pH, protein or dry matter ratio, salt content, mixing energy, addition point, dwell time and in-package temperature should be defined as separate variables.
If a premix is being prepared in glucono-delta-lactone (GdL) solution, the time between preparation and use is recorded in writing. The same performance should not be assumed as direct addition from the powder, as hydrolysis may have progressed in the ready solution.
Tank volume, heat transfer and filling speed become important in the transfer of glucono-delta-lactone (GdL) results from the laboratory to the production. Especially for sensitive gels such as tofu, the filling tempo of the facility and the acidification rate must be designed together.
RAW MATERIAL COMPATIBILITY AND FORMULATION LIMITS
Glucono-delta-lactone (GdL) behaves differently in systems containing calcium salts, phosphates, proteins, carbonates, and buffer agents. When used with sodium bicarbonate, the gluconic acid formed reacts with the base; free acidification and gas formation are evaluated simultaneously.
The combination of glucono-delta-lactone (GdL) with calcium sulfate can create a different coagulation profile in tofu applications. In combined use, not only the amount of the two additives, but also the order of addition and the mineral ion balance should be monitored.
In glucono-delta-lactone (GdL) food processes, the amount of sugar, starch, fat and salt has indirect effects on pH buffering, water activity and gel mechanics. The same recipe should be revalidated with different raw materials.
ENVIRONMENTAL AND REGULATORY ASSESSMENT
Glucono-delta-lactone (GdL) is linked to carbohydrate-based gluconic acid chemistry; however, the environmental impacts of the production process depend on the raw materials, energy, purification and packaging conditions used. Environmental superiority should not be claimed by the term "natural" alone.
Glucono-delta-lactone (GdL) has JECFA, Codex and relevant national legislation regulations. Authorization as a food additive does not mean the same level of use in every food category in which the product is present. Special production methods and certification requirements may also apply to organic products.
The labeling, purity limits, and claims of the end product containing glucono-delta-lactone (GdL) should be checked against the target country. The supplier's COA, SDS, and food-grade compliance documents should match the product name and production batch.
INITIAL FORMULATION APPROACHES FOR GLUCONO-DELTA-LACTONE (GDL)
The following eight examples are research starter recipes prepared to see the effect of the glucono-delta-lactone (GdL) ratio in two model systems. Four soy milk systems and four aqueous model systems containing bicarbonate are listed separately. All percentages are a percentage by weight of the final mixture, and each formulation is completed to 100.00%.
These recipes are not verified manufacturer formulas. They do not imply approval for food consumption, commercial sale, shelf life, or regulatory compliance. If model soy milk is used, the protein content should be kept the same; the gas developed in the model relief system should be prevented from accumulating in closed pressure vessels. Trials should be conducted with appropriate hygiene and risk assessment.
EXAMPLE 1: Glucono-delta-lactone (GdL) LEVEL SCREENING IN SILKY TOFU MODEL
Objective: To compare the effect of glucono-delta-lactone (GdL) ratio on pH reduction, coagulation time, gelation, water release, and texture.
Starting ingredients (wt%, final mixture):
CONTROL A
Glucono-delta-lactone (GdL): 0.00%
Standardized, pasteurized soy milk: 100.00%
TOTAL: 100.00%
EXAMPLE B
Glucono-delta-lactone (GdL): 0.15%
Standardized, pasteurized soy milk: 99.85%
TOTAL: 100.00%
EXAMPLE C
Glucono-delta-lactone (GdL): 0.30%
Standardized, pasteurized soy milk: 99.70%
TOTAL: 100.00%
EXAMPLE D
Glucono-delta-lactone (GdL): 0.45%
Standardized, pasteurized soy milk: 99.55%
TOTAL: 100.00%
Application approach:
Soy milk is prepared in the same batch and with the same protein concentration. The initial temperature, addition method, mixing time and dwell conditions of each sample are equalized. pH-time curve, gel start, hardness and serum release are monitored. The control sample is soy milk only; it is not expected to cause coagulation. The appropriate dose is verified by the manufacturer's grade and process recommendations, sensory analysis and safety controls.
Note: The specific water and protein content of soy milk is taken into account as a single raw material; the composition of the commercial soy milk used must be recorded separately.
EXAMPLE 2: Glucono-delta-lactone (GdL) LEVEL SCAN IN AQUEOUS MODEL EMBOSSING SYSTEM
Objective: To compare the effect of glucono-delta-lactone (GdL) amount on pH change and timing of carbon dioxide formation in the bicarbonate model mixture.
Starting ingredients (wt%, final mixture):
CONTROL A
Glucono-delta-lactone (GdL): 0.00%
Sodium bicarbonate: 0.25%
Sucrose: 8.00%
Deionized water: 91.75%
TOTAL: 100.00%
EXAMPLE B
Glucono-delta-lactone (GdL): 0.20%
Sodium bicarbonate: 0.25%
Sucrose: 8.00%
Deionized water: 91.55%
TOTAL: 100.00%
EXAMPLE C
Glucono-delta-lactone (GdL): 0.40%
Sodium bicarbonate: 0.25%
Sucrose: 8.00%
Deionized water: 91.35%
TOTAL: 100.00%
EXAMPLE D
Glucono-delta-lactone (GdL): 0.60%
Sodium bicarbonate: 0.25%
Sucrose: 8.00%
Deionized water: 91.15%
TOTAL: 100.00%
Application approach:
The same sodium bicarbonate, sucrose and water quality are used in all samples. Mixtures are monitored in test vessels of equal volume, open and allowing gas escape; they are not closed to create pressure. The reaction is monitored with pH-time curve, temperature, mass loss or appropriate gas measurement. The experiment is a model gas formation screening, not a food product; it should not be directly transferred to cake or dough performance.
Note: Sodium bicarbonate is constant in all samples. As the acid level rises, only deionized water is lowered. Effective molar neutralization should be calculated without assuming that all of it has occurred.
ALTERNATIVES AND COMPARISON OF GLUCONO-DELTA-LACTONE (GDL)
Alternatives to glucono-delta-lactone (GdL) should be compared in terms of final function. Rapid pH reduction, controlled coagulation, slow relief, sensory acidity or chelation are all different requirements.
A glucono-delta-lactone (GdL) substitute acid is not expected to provide the same pH or gel behavior at the same weight percentage. Acid equivalent, buffering, dissolution rate, taste, and relevant food additive legislation should be re-examined.
GLUCONO-DELTA-LACTONE (GDL) AND CITRIC ACID
Citric acid generally provides direct and rapid acidification in aqueous systems. Glucono-delta-lactone (GdL), on the other hand, hydrolyzes with water to form acids and can give a more gradual pH decrease in some processes.
Citric acid may produce more pungent sour taste and there is no guarantee of equivalent acidification at the same dose. Separate dosing study is required over the target pH and sensory profile.
GLUCONO-DELTA-LACTONE (GDL) AND LACTIC ACID
Lactic acid is the common acidifying ingredient in dairy products. When glucono-delta-lactone (GdL) is dosed in lactone, the timing may be different because it involves a dissolution and hydrolysis step first.
Lactic acid can be supplied in liquid solution, which affects the calculation of dry matter and water. Comparison of the commercial purity of lactic acid with that of lactone on a gram-by-gram basis is not sufficient.
GLUCONO-DELTA-LACTONE (GDL) AND CALCIUM SULFATE AND CALCIUM CHLORIDE
Calcium salts can be used as mineral coagulants in tofu and some protein systems. The main difference with glucono-delta-lactone (GdL) is that mineral ion action and pH-controlled protein gelation are not the same mechanism.
Hardness, aroma, water release, mineral load, and ion balance should be analyzed separately in combination with calcium salts or in alternative use.
GLUCONO-DELTA-LACTONE (GDL) AND SODIUM ACID PYROPHOSPHATE AND OTHER RELIEF ACIDS
In chemical embossing, sodium acid pyrophosphate and similar acid salts can be designed to provide different outgassing profiles. Glucono-delta-lactone (GdL) consumes bicarbonate with the acid resulting from hydrolysis with water.
When deciding on the rising performance, reaction rate, neutralization value, sodium additive, taste, dough pH and target product standard should be evaluated together.
GLUCONO-DELTA-LACTONE (GDL) AND GLUCONIC ACID AND SODIUM GLUCONATE
Gluconic acid is the product formed by Glucono-delta-lactone (GdL) hydrolysis; when used as a ready-made acid, there is no delayed hydrolysis step. Sodium gluconate is a salt and its acidification role is not the same.
In complexation and buffering applications, pH, metal ions, and other components of the solution must be considered.
QUALITY CONTROL AND PURCHASING CRITERIA FOR GLUCONO-DELTA-LACTONE (GDL)
The glucono-delta-lactone (GdL) purchase specification must define identity, purity, moisture, appearance, particle size, color, solution clarity, impurity profile, heavy metal limits, place of manufacture, and packaging. Certificate of conformity to FCC, JECFA, and relevant regional purity criteria is required according to the application area.
Coarser or fine-grained commercial grades for glucono-delta-lactone (GdL) may yield different dissolution curves. Two supplier samples should not be considered equivalent in performance just because the label name is equal.
COA, production and expiration date, lot number, declarations of conformity, allergen/GMO information of the glucono-delta-lactone (GdL) batch are requested when required. Supplier audit and traceability are also part of quality control in the food industry.
STORAGE AND HANDLING OF GLUCONO-DELTA-LACTONE (GDL)
Glucono-delta-lactone (GdL) should be stored in its original, tightly closed packaging in a dry environment, protected from moisture and wide temperature fluctuations. Moisture intake can lead to clumping and chemical transformation. The opened package is closed immediately after use.
If glucono-delta-lactone (GdL) is transported as a food raw material, food logistics measures are applied against physical contamination, odor transfer, allergen cross-contamination and pest risk. The manufacturer's label is taken as a basis for warehouse stacking and shelf life.
For the glucono-delta-lactone (GdL) transport classification, the current SDS of the commercial batch should be examined; the general food additive status does not result in unlimited exemption in transport.
GLUCONO-DELTA-LACTONE (GDL) SAFETY INFORMATION
It is possible that glucono-delta-lactone (GdL) powder may cause mechanical irritation to the eyes and respiratory tract. Dust control, proper ventilation, eye protection and occupational hygiene should be practiced. It is recommended that spilled product should not be removed into the air as dry powder.
Since glucono-delta-lactone (GdL) starts to form an acidic environment in water, the pH of the prepared solutions should be taken into account in terms of skin and eye contact. Chemical classification and first aid information should be obtained from the current SDS under operating conditions.
Food grade designation for glucono-delta-lactone (GdL) does not directly imply that it is ready to eat. Proper dose, raw materials, contamination control, and final product verification are required in approved food production.
WHAT TO CONSIDER WHEN BUYING GLUCONO-DELTA-LACTONE (GDL)?
The glucono-delta-lactone (GdL) purchase request must specify the exact chemical name, CAS 90-80-2, the product category to be used, the target pH-time curve, and the desired particle size. If the goal is tofu coagulation, dairy acidification, or baking, this use must be written separately.
For glucono-delta-lactone (GdL), up-to-date TDS, SDS, COA, E575/INS 575 certificate of conformity, relevant food legislation statement, packaging, shelf life and traceability documents should be requested.
If glucono-delta-lactone (GdL) is to be purchased from different suppliers, a single trial with the same weight percentage is not sufficient; dissolution, acidification, sensory profile and process reproducibility are compared separately.
GLUCONO-DELTA-LACTONE (GDL) SUPPLY FROM ATAMAN KIMYA
Glucono-delta-lactone (GdL) is a lactone-based raw material that can be used for controlled acidity regulation, tofu coagulation, and some bakery and food systems. Businesses searching for procurement through Ataman Kimya should clearly declare the area of use, desired quality class, and technical specification requirements.
Current stock, represented manufacturer, origin, packaging, batch quality and food conformity documents should be confirmed from the company. The technical descriptions herein are not claims of a specific stock or supply authorization.
FREQUENTLY ASKED QUESTIONS ABOUT GLUCONO-DELTA-LACTONE (GDL)
What is Glucono-delta-lactone (GdL)?
It is a crystalline compound that is the delta lactone of gluconic acid, which converts to gluconic acid in water over time.
What is the glucono-delta-lactone (GdL) CAS number?
90-80-2.
What is the EC number of glucono-delta-lactone (GdL)?
202-016-5.
What is the chemical formula of glucono-delta-lactone (GdL)?
C6H10O6.
What is the molar mass of glucono-delta-lactone (GdL)?
About 178.14 g/mol.
What is the glucono-delta-lactone (GdL) E number?
E575.
What is the INS number of glucono-delta-lactone (GdL)?
575.
Why does glucono-delta-lactone (GdL) acidify slowly?
As a result of hydrolysis with water, gluconic acid is formed over time.
Is glucono-delta-lactone (GdL) Water soluble?
Yes, it is soluble in water, and hydrolysis occurs after dissolution.
What is the Glucono-delta-lactone (GdL) Outlook?
White, almost odorless crystalline powder.
What does glucono-delta-lactone (GdL) do in Tofu?
It helps the coagulation of soy proteins and gel formation with pH decrease.
Can Glucono-delta-lactone (GdL) be used for silken tofu?
Yes, in proper food quality and verified process conditions.
Can Glucono-delta-lactone (GdL) be used in Dairy products?
If the legislation of the product category is appropriate, it can be evaluated for controlled acidification.
Can glucono-delta-lactone (GdL) be used in Baking?
It can be used with bicarbonate for delayed acid and gas formation.
Is glucono-delta-lactone (GdL) the same as Citric acid?
No; the acidification rate and sensory profile may be different.
Is glucono-delta-lactone (GdL) equivalent to Lactic acid?
No; direct acid and lactone hydrolysis create different process behaviors.
Is glucono-delta-lactone (GdL) the same as Gluconic acid?
No; gluconic acid is the type formed after hydrolysis.
Is glucono-delta-lactone (GdL) the same as Sodium gluconate?
No; sodium gluconate is the salt of gluconic acid.
Does glucono-delta-lactone (GdL) lower pH the same in all environments?
No; buffering depends on temperature, dose and duration.
Does glucono-delta-lactone (GdL) Acidity change over time?
Yes; it can change as hydrolysis progresses.
Why is glucono-delta-lactone (GdL) Particle size important?
It can contribute to the dissolution and therefore acidification profile.
Can glucono-delta-lactone (GdL) Instant solution be kept on hold?
It must be revalidated for its intended use as standby will advance hydrolysis.
Can glucono-delta-lactone (GdL) be used unlimitedly in food?
No; category-specific legislation and good manufacturing practices apply.
What is a glucono-delta-lactone (GdL) JECFA assessment?
The ADI for the relevant group was reported as "not specified".
Is glucono-delta-lactone (GdL) used in Cosmetics?
It may be included in some products under the name Gluconolactone; suitability is evaluated separately.
Is glucono-delta-lactone (GdL) suitable for Pharmaceutical use?
Only when the relevant quality, pharmacopoeia and regulatory requirements are met.
How to manage Glucono-delta-lactone (GdL) Shelf life?
With the manufacturer's label and COA information, in sealed packaging against moisture.
Glucono-delta-lactone (GdL) What are the most basic quality certificates?
TDS, SDS, COA, and target application compliance statements.
Why do you need glucono-delta-lactone (GdL) final product testing?
pH, texture, sensory quality and safety depend on the process as well as the raw material.
Can glucono-delta-lactone (GdL) be used in Organic products?
It may be possible under certain conditions; certification and production method should be checked.
What happens if the glucono-delta-lactone (GdL) product is added in excess?
Excessive acidification, texture and taste changes may occur.
Glucono-delta-lactone (GdL): Does lowering the pH alone ensure product safety?
No; microbiological safety and shelf life should be validated separately.
GLUCONO-DELTA-LACTONE (GDL) – TECHNICAL SUMMARY
Glucono-delta-lactone (GdL) is a cyclic lactone of D-gluconic acid, known by the IDs CAS 90-80-2 and E575/INS 575. It is supplied as a white crystalline powder; when dissolved in water, it converts to gluconic acid in a controlled manner. This behavior may be useful for tofu gelling, acidity regulation in some dairy products, and timing gas formation in baking.
Glucono-delta-lactone (GdL) performance depends on more than just dose: initial temperature, buffering capacity of the product, particle size, mixing, and dwell time all change the actual pH and texture result. In comparative experiments, pH-time curves, texture, and sensory quality must be measured together.
The use of glucono-delta-lactone (GdL) should be based on current SDS, TDS, COA, relevant food quality requirements and target market legislation. Eight initial recipes are for research purposes; they are not commercial production, regulatory or product safety approvals.
