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Galactomannan polysaccharide is a natural polysaccharide carbohydrate composed of mannose and galactose sugar units.
Galactomannan polysaccharide belongs to the class of plant-derived gums and hydrocolloids.
Galactomannan polysaccharide are commonly obtained from seeds of legumes such as guar, locust bean, and tara.
CAS Number: 9000-40-2
Molecular Formula: C10H11ClN2O2
Molecular Weight: 226.65954
EINECS Number: 232-541-5
Synonyms: 9000-40-2, LOCUST BEAN GUM, Carobbeanextract, carobflour, Carobgum, carobseedgum, ceratoniagum, fructoline, indalcaabv, johannisbrotmehl.
Galactomannan polysaccharide occurs as a yellow-green or white colored powder.
Although odorless and tasteless in the dry powder form, ceratonia acquires a leguminous taste when boiled in water.
Galactomannan polysaccharide is a natural product obtained from the endosperm of milled seeds from the fruit pod of C.
Galactomannan polysaccharide is obtained from the macerated endosperm of the seeds of the fruit pod of the carob tree.
This endosperm, comprising 42 to 46% of the kernel, contains virtually all of the galactomannan present in the seed.
Galactomannan polysaccharide is not found in the kibble. Carob bean gum is used as a food stabilizer and thickener, a flavor and/or flavor modifier, an emulsifier, a texturizer and a solvent/ carrier/encapsulating agent.
Galactomannan polysaccharide consists of a β-(1→4)-linked mannose backbone with α-(1→6)-linked galactose side groups.
The ratio of galactose to mannose varies depending on the plant source.
This structure strongly influences solubility and viscosity.
Physically, galactomannan polysaccharides appear as white to off-white powders.
They are odorless and form viscous solutions when dispersed in water.
They are insoluble in most organic solvents.
Galactomannan polysaccharide shows high water-binding capacity.
It hydrates rapidly and produces thick, stable solutions.
Because of this, it is widely used as a thickening and stabilizing agent.
The polymer is non-ionic and chemically stable over a wide pH range.
It is compatible with many salts, surfactants, and other polymers.
This makes it useful in complex formulations.
Galactomannan polysaccharide are considered biocompatible and biodegradable.
They are derived from renewable plant materials.
These properties support their use in food, pharmaceutical, and cosmetic applications.
Functionally, Galactomannan polysaccharide acts as a thickener, stabilizer, and emulsifier.
It improves texture, viscosity, and suspension stability.
This behavior is typical of hydrocolloid polysaccharides.
In industry, galactomannan polysaccharides are used in food products, pharmaceuticals, cosmetics, and drilling fluids.
Different sources provide slightly different properties.
Common examples include guar gum and locust bean gum.
Galactomannan polysaccharide is best described as a plant-derived hydrocolloid polymer used for thickening, stabilizing, and water retention in many industrial and consumer products.
Galactomannan polysaccharide consisting of a mannose backbone with galactose side groups, more specifically, a (1-4)-linked beta-D-mannopyranose backbone with branchpoints from their 6-positions linked to alpha-D-galactose, (i.e. 1-6-linked alpha-D-galactopyranose).
Melting point: >200 °C (decomposition)
FEMA: 2648 | Locust gum (Ceratonia siliqua L.)
Storage temperature: Sealed in dry conditions; room temperature
Solubility: Dispersible in hot water forming a sol (pH 5.4–7.0); forms gel with sodium borate; hydrates slowly in cold water; practically insoluble in ethanol
Form: Solid
Color: Off-white to light beige
Odor: Fruity, raisin, jammy, brown cocoa, chocolate, bready, coffee, brandy (100%)
Odor type: Fruity
Stability: Hygroscopic
Galactomannan polysaccharides differ in their galactose-to-mannose ratio, which determines their functional properties.
Higher galactose content generally increases water solubility.
Lower galactose content leads to stronger gel formation and higher viscosity.
These polymers form highly viscous solutions even at low concentrations.
The long-chain structure allows strong intermolecular interactions.
This gives Galactomannan polysaccharide excellent thickening efficiency.
Galactomannan polysaccharide can interact with other hydrocolloids such as xanthan gum, carrageenan, and agar.
These interactions may produce synergistic viscosity or gel formation.
Such combinations are widely used in formulation science.
The polymer shows good stability over a broad pH range, typically from acidic to mildly alkaline conditions.
It also tolerates moderate heating without decomposition.
This makes it suitable for food processing and industrial use.
Galactomannan polysaccharide solutions exhibit pseudoplastic (shear-thinning) behavior.
Viscosity decreases when shear is applied and recovers afterward.
This property is desirable in coatings, foods, and drilling fluids.
Because of its polysaccharide nature, Galactomannan polysaccharide can be enzymatically degraded by certain microorganisms.
This biodegradability is advantageous for environmental applications.
It also affects shelf life in aqueous systems.
Galactomannan polysaccharide has strong film-forming and binding ability.
Galactomannan polysaccharide can help hold particles together in powders and tablets.
This is useful in pharmaceutical and food formulations.
In biological systems, Galactomannan polysaccharide can act as dietary fibers.
They are not fully digested in the human intestine.
This contributes to their use in nutrition and health products.
Galactomannan polysaccharide is a high-molecular-weight, water-soluble plant polymer valued for viscosity control, stability, and biocompatibility across many industries.
Galactomannan polysaccharides are typically extracted from legume seed endosperm, where they function as natural storage carbohydrates.
Common commercial sources include guar seeds, locust bean seeds, and tara seeds.
The extraction process usually involves milling, hydration, and purification.
The molecular weight of Galactomannan polysaccharide is very high, often in the range of hundreds of thousands to several million Daltons.
This high molecular size contributes to strong viscosity and thickening ability.
Small changes in molecular weight can significantly affect performance.
Galactomannan polysaccharide solutions show good compatibility with electrolytes compared to many other polysaccharides.
They maintain viscosity even in the presence of salts.
This makes them useful in industrial fluids and drilling muds.
The polymer can form weak gels or highly viscous networks depending on concentration and temperature.
Gel formation is stronger when combined with other hydrocolloids.
This property is important in food texture control.
Galactomannan polysaccharide has excellent water retention capacity.
It can hold large amounts of water within its structure.
This helps prevent drying and improves stability in many products.
Because it is non-ionic, Galactomannan polysaccharide shows low chemical reactivity under normal conditions.
Galactomannan polysaccharide does not easily react with acids, bases, or salts at moderate levels.
This contributes to long-term stability in formulations.
In pharmaceutical and biomedical research, Galactomannan polysaccharide is studied for controlled-release and drug-delivery systems.
Galactomannan polysaccharides swelling and gel-forming ability can regulate diffusion of active ingredients.
This supports sustained-release formulations.
Galactomannan polysaccharide is also used in oilfield and mining applications because of its rheological properties.
It helps control fluid thickness and suspension behavior.
These properties are important in drilling and extraction processes.
Galactomannan polysaccharide is a high-molecular-weight, plant-derived hydrocolloid known for viscosity control, water retention, stability, and compatibility with many formulation systems.
Uses Of Galactomannan polysaccharide:
Locust bean gum (LBG, galactomannan polysaccharide) from Ceratonia siliqua seeds may be used as a substrate to help identify, differentiate and characterize mannanase(s), such as the β-Mannanases.
LBG may be used in the development of drug delivery devices.
Galactomannan polysaccharide may be used to study its properties as a protective agent on both eucalyptus and microcrystalline cellulose destruction of crystallinity by ball milling.
Galactomannan polysaccharide may be used to study its properties as a food additive that reduces spoilage caused by Aspergillus flavus.
Galactomannan polysaccharide may be used as a starting material for the organic synthesis of hyperbranched N-glycan core structures.
Locust Bean Gum is a gum that is a Galactomannan polysaccharide obtained from the plant seed from the locust bean tree known as ceratonia siliqua.
Galactomannan polysaccharide has a mannose:galactose ratio of approximately 4:1.
Galactomannan polysaccharides properties include swelling partially in cold water but requiring heating to approximately 82°c for complete solubility.
Galactomannan polysaccharide provides high viscos- ity, forms gels with xanthan gum upon heating and cooling of the solution, and functions as a water binder.
Galactomannan polysaccharide can make agar or car- rageenan gels more elastic.
Galactomannan polysaccharides uses include processed cheese, ice cream, bakery products, soups, and pies. typical usage level is 0.1– 1.0%.
Galactomannan polysaccharide is also called carob gum or saint john’s bread, and is scien- tifically called carubin.
Ceratonia is a naturally occurring material generally used as a substitute for tragacanth or other similar gums.
A ceratonia mucilage that is slightly more viscous than tragacanth mucilage may be prepared by boiling 1.0–1.5% of powdered ceratonia with water.
As a viscosity-increasing agent, ceratonia is said to be five times as effective as starch and twice as effective as tragacanth.
Galactomannan polysaccharide has also been used as a tablet binder and is used in oral controlled-release drug delivery systems approved in Europe and the USA.
Galactomannan polysaccharide is used in ice cream and frozen desserts to control crystal formation.
It improves smoothness and prevents ice recrystallization during storage.
This enhances texture and stability.
In bakery products, galactomannan helps retain moisture and improve dough handling.
Galactomannan polysaccharide increases softness and shelf life of bread and cakes.
It also improves volume and structure.
Galactomannan polysaccharide is used in instant food and powdered mixes as a thickener.
Galactomannan polysaccharide hydrates quickly in water and forms stable solutions.
This makes it suitable for soups, beverages, and ready-to-mix products.
In paint, inks, and coatings, Galactomannan polysaccharide acts as a rheology modifier.
It controls flow, leveling, and suspension of pigments.
This improves application performance and stability.
In ceramic and construction materials, Galactomannan polysaccharide is used as a binder and thickener.
It helps maintain uniform mixtures and improves workability.
This supports molding and coating processes.
Galactomannan polysaccharide is used in agriculture formulations, such as pesticide suspensions and seed coatings.
It helps maintain uniform dispersion of active ingredients.
This improves application consistency.
In biotechnology and microbiology, galactomannan is used as a stabilizer and matrix material.
It can support controlled release or immobilization of biological components.
These applications are mainly research-based.
In printing pastes and textile finishing, Galactomannan polysaccharide provides viscosity and film-forming ability.
Galactomannan polysaccharide helps control dye penetration and fabric coating.
This improves color uniformity and finish quality.
Galactomannan polysaccharide is used in many fields where viscosity control, moisture retention, suspension stability, and film formation are required.
Galactomannan polysaccharide is widely used as a thickening and stabilizing agent in food products.
Galactomannan polysaccharide improves texture, viscosity, and mouthfeel in sauces, dairy products, and baked goods.
Common commercial forms include guar gum and locust bean gum.
In pharmaceutical formulations, Galactomannan polysaccharide is used as a binder and controlled-release agent.
Galactomannan polysaccharide helps regulate the release of active ingredients.
Its swelling and gel-forming properties support tablet and capsule formulations.
Galactomannan polysaccharide is used in cosmetics and personal-care products as a viscosity modifier.
It stabilizes emulsions and improves product consistency.
Galactomannan polysaccharide is commonly found in creams, lotions, and shampoos.
In oilfield and drilling fluids, Galactomannan polysaccharide is used as a rheology modifier.
Galactomannan polysaccharide increases viscosity and helps suspend solid particles.
This improves drilling efficiency and fluid stability.
In textile and paper processing, Galactomannan polysaccharide is used as a thickener and sizing agent.
Galactomannan polysaccharide improves coating uniformity and fiber bonding.
This enhances product strength and surface quality.
Galactomannan polysaccharide is applied in adhesives and coatings to control flow and film formation.
It helps maintain uniform dispersion of solids.
This improves application performance.
In water treatment and mining processes, Galactomannan polysaccharide is used as a flocculating and suspending agent.
Galactomannan polysaccharide helps control particle settling and fluid behavior.
This supports separation and purification processes.
In dietary and nutritional products, Galactomannan polysaccharide acts as a soluble fiber.
It contributes to viscosity in the digestive system.
This use is related to its natural polysaccharide structure.
Galactomannan polysaccharide is used wherever thickening, stabilization, water retention, and rheology control are required across food, pharmaceutical, cosmetic, and industrial applications.
Safety Profile Of Galactomannan polysaccharide:
Mildly toxic by ingestion, when heated to decomposition it emits acrid smoke and irritating fumes.
Galactomannan polysaccharide is generally regarded as an essentially noncarcinogenic, nontoxic and nonirritant material.
Therapeutically, it has been used in oral formulations for the control of vomiting and diarrhea in adults and children; 20–40 g daily in adults has been used dispersed in liquid.
Galactomannan polysaccharide is generally considered to have low hazard potential because it is a natural, plant-derived carbohydrate polymer.
Galactomannan polysaccharide is widely used in food, pharmaceutical, and cosmetic products.
However, dust exposure and high concentrations may still present some risks.
Skin contact is usually not irritating, but prolonged exposure to powder may cause mild dryness in sensitive individuals.
Normal handling with basic hygiene is sufficient.
Protective gloves may be used in industrial settings.
Eye contact with powder may cause mechanical irritation.
Fine particles can lead to redness or discomfort.
Rinsing with water is recommended if contact occurs.
Inhalation of dust may cause respiratory irritation, especially in occupational environments.
Symptoms can include coughing or throat irritation.
Dust control and proper ventilation should be used during large-scale handling.
Ingestion is generally low toxicity, since Galactomannan polysaccharide are commonly used as food additives and dietary fibers.
However, very large amounts may cause digestive discomfort such as bloating.
Use should follow recommended levels in formulations.
