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CAS No.: | 9000-30-0 |
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Name: | Guar gum |
Molecular Structure: | |
Formula: | C10H14N5Na2O12P3 |
Molecular Weight: | 535.145283 |
Synonyms: | Jaguar 6000;Jaguar 6003;Jaguar 6003VT;Jaguar7500X;Jaguar 2638;Indalca AG-BV;Indalca AG-HV;J 2Fp;J 3000;Jaguar 170;Jaguar 2204;Jaguar 2243;Jaguar2610;Indalca AG;Gums, guar;Higum 551;InagelGR 10;Fine Gum G 17;Galaxy 1083;Galactasol 270;Gendril Thik;Guapack PF 20;Guar;GuarWW250F;Guar flour;Guaran;Guarcel 302;Guarcol U 40;Guargel D 15;Gum guar;Frimulsion BM;GW 4;GW 4AFG;Galactasol;Galactasol 20H5FI;Galactasol 211;Fine Gum G;FG-HV;Emcogum CSAA;Emulgum 200;Emulgum 200S;Ecopol 5060;EGMB;E412;Dealca TP 1;Dealca TP 2;Decorpa;Duck Gum 800;Avicel CE 15;C 1000 (gum);C 250(gum);CP 3300;Burtonite V 7E;CSAA-M 80;Celbond 7;Cyamopsis gum;Oruno G 1;PAK-T 80;Papsize 7;Polycol WP 05;Polycol WP10;Polycol WP 15;Polytex 100;Procol U;RG 100;RT 3088;Rantec 4000;Rantec KP 4000;Rein Guarin;Stamulcol ULV 500;Supercol G 2S;Supercol GF;Supercol U;Supercol U Powder;Syngum D 46D;VIS TOP D 1321;VIS TOP D 2029;VIS TOP D 2081;VIS TOP LH 303;VidocremeA;Jaguar A 20B;Jaguar A 20D;Jaguar A 40F;Jaguar MDD;K 4492;KWL 2000;LGC 1;Lameprint DX 9;Lipocard;Lycoid DR;Meypro-Guar 50;Meypro-Guar CSAA 200/50;Meypro-Guar CSAA-M 225;Meyprodor 50;Meyprogum TC 47;NGL 8158;Neosoft;Neosoft G 11;Jaguar MDD-I;Meypro Guar CSAAM-100;Uniguar 80;VIS TOP B 20; |
EINECS: | 232-536-8 |
Appearance: | yellowish powder |
PSA: | 0.00000 |
LogP: | 0.00000 |
Guar gum, also called guaran, is a galactomannan. It is primarily the ground endosperm of guar beans. The guar seeds are dehusked, milled and screened to obtain the guar gum. It is typically produced as a free-flowing, off-white powder. Chemically, guar gum is a polysaccharide composed of the sugars galactose and mannose. Guar gum is more soluble than locust bean gum and is a better emulsifier as it has more galactose branch points. In water it is nonionic and hydrocolloidal. It is not affected by ionic strength or pH, but will degrade at pH extremes at temperature (e.g. pH 3 at 50°C). It remains stable in solution over pH range 5-7. It is insoluble in most hydrocarbon solvents.
Preparation of Guar gum: Food-grade guar gum is manufactured in stages. Guar split selection is important in this process. The split is screened to clean it and then soaked to prehydrate it in a double-cone mixer. The prehydrating stage is very important because it determines the rate of hydration of the final product. The soaked splits, which have reasonably high moisture content, are passed through a flaker. The flaked guar split is ground and then dried. The powder is screened through rotary screens to deliver the required particle size. Oversize particles are either recycled to main ultra fine or reground in a separate regrind plant, according to the viscosity requirement.
Uses of Guar gum: Guar gum is used for sizing, finishing and printing; It improved sheet formation, folding and denser surface for printing; used as waterproofing agent mixed with ammonium nitrate, nitroglycerin etc. and as binder or as disintegrator in tablets.The largest market for guar gum is in the food industry. Applications include: Baked goods- increases dough yield, gives greater resiliency, and improves texture and shelf life; in pastry fillings, it prevents "weeping" (syneresis) of the water in the filling, keeping the pastry crust crisp; Dairy - thickens milk, yogurt, kefir, and liquid cheese products; helps maintain homogeneity and texture of ice creams and sherbets; Meat - functions as lubricant and binder; Dressing and sauces - improves the stability and appearance of salad dressings, barbecue sauces, relishes, ketchups and others.
The toxicity data is as follows:
Organism | Test Type | Route | Reported Dose (Normalized Dose) | Effect | Source |
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hamster | LD50 | oral | 6gm/kg (6000mg/kg) | Food & Drug Research Laboratories, Inc., Papers. Vol. 124, Pg. -, 1976. | |
mouse | LD50 | oral | 8100mg/kg (8100mg/kg) | Food & Drug Research Laboratories, Inc., Papers. Vol. 124, Pg. -, 1976. | |
rabbit | LD50 | oral | 7gm/kg (7000mg/kg) | Food & Drug Research Laboratories, Inc., Papers. Vol. 124, Pg. -, 1976. | |
rat | LD50 | oral | 6770mg/kg (6770mg/kg) | Food and Cosmetics Toxicology. Vol. 19, Pg. 287, 1981. |