2.2 Heteroglycans
In general, Gums represent a heterogenous group of acidic
substances, that essentially possess in common the characteristic property of
swelling in water to form either gels or viscous, sticky, solutions. It has
also been advocated that gums are the resulting products obtained from normal
plant metabolism. In addition, it is also believed that gums may have been
produced from starch or cellulose through hydrolysis, followed by oxidation to
uronic acids and finally undergoing the process of esterfication or formation
of salt accordingly.
In actual practice, the natural gums may be classified
into four different groups, namely:
(a) Exudate Gums
(b) Seed Gums
(c) Marine Gums, and
(d) Microbial Gums
Source: Pharmacognosy And Pharmacobiotechnology By Ashutosh Kar
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