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HowStuffWorks Show: Xanthan Gum - Xanthomonas campestris

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Published on Apr 19, 2012

A Goma Xantana (C35H49O29) é um polissacarídeo obtido naturalmente pela fermentação da bactéria Xanthomonas campestris, que sintetiza a goma para evitar sua desidratação. É um aditivo bastante utilizado na indústria farmacêutica e alimentícia como estabilizante, espessante e emulsificante, é utilizada em produtos como higiene oral, alimentação animal, perfuração de campos petrolíferos, aplicações farmacêuticas e muitas outras.

Xanthan gum is a polysaccharide, derived from the bacterial coat of Xanthomonas campestris, used as a food additive and rheology modifier, commonly used as a food thickening agent (in salad dressings, for example) and a stabilizer (in cosmetic products, for example, to prevent ingredients from separating). It is produced by the fermentation of glucose, sucrose, or lactose by the Xanthomonas campestris bacterium. After a fermentation period, the polysaccharide is precipitated from a growth medium with isopropyl alcohol, dried, and ground into a fine powder. Later, it is added to a liquid medium to form the gum.

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