Thursday, May 2, 2013

Guar Gum Food Additive Spotlight



Guar gum, also called guaran, is a natural polysaccharide, and it is extracted from the seed of the leguminous shrub Cyamopsis tetragonoloba, where it acts as a food and water store. Guar gum is found in mostly in Pakistan and India, but smaller crops are also grown in the United States, Australia, and Africa. Guar gum is primarily used as a thickening agent, stabilizer and emulsifier or binder.

Guar gum is used in the food industry as a thickener and binder of free water. Much like xanthan gum, guar gum is only needed in small quantities to produce sufficient viscosity, making it a popular choice for a wide variety of foods.

FOODS IT IS USED IN

India is native of guar or cluster bean where it is used as a vegetable. From hundreds of years Guar has been used as vegetable in India. It is also used as a cattle food, and as a green manure crop in agriculture. Guar gum comes from the endosperm of the seed of the legume plant Cyamopsis tetragonoloba; an annual plant, grown in dry regions of India as a food crop for animals. There are various grades of Guar gums pure or derivative. Guar gum is a white to creamy coloured, free flowing powder and free from extraneous matter. Its ability to suspend solids, bind water by hydrogen bonding, control the viscosity of aqueous solutions, form strong tough films have accounted for its rapid growth and use in various industries. For example guar gum is used in paper, textile, oil drilling, mining, explosives, ore flotation and other various industrial applications.

Guar gum is used in sauces, salad dressings, ice creams, instant noodles, processed meats, bread improvers/baked goods, and beverages, to name a few. In baked goods, guar gum increases dough yield, gives greater resiliency, and improves texture and shelf life. In dairy products guar gum thickens products such as milk and yogurt, and it helps maintain homogeneity and texture of ice creams, and also sherbets. In processed meats, it functions as a binder and lubricant and it improves the appearance and stability of barbecue sauces, ketchups, dressings, and relishes.



HEALTH AND LONGEVITY CONCERNS

Guar gum is Generally Recognized as Safe (GRAS) according to the U.S. Food & Drug Administration; however, several studies indicate that guar gum may reduce the absorbability of some dietary minerals, including calcium. Other studies suggest that guar gum may lower cholesterol, aid in weight-loss, and help control diabetes. Because guar gum is a water-soluble fiber that acts as a bulk forming laxative, it is believed that it promotes regular bowel movements and relieves constipation or other symptoms associated with colitis, Crohn’s Disease, diverticulosis, and irritable bowel syndrome (IBS), to name a few.

While there are no known side effects in the concentrations used, unusually high concentrations may cause excessive bloating and flatulence due to fermentation by the intestinal microflora -- much in the same way as all indigestible polysaccharides.

OTHER USES

Guar gum may be used for cosmetics and toiletries such as conditioner, shampoos, and toothpaste. It is also used in the explosives industry, the paper industry, the pharmaceutical industry, and the textile industry. Guar gum is also used in the oil industry as a natural thickener. Xanthan gum can be added to water to increase its viscosity, or thickness. It is also used in mining and in pet foods.

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