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During the past few years as a result of the intense concern with all aspects of ecology, There has been a renewed interest in so called ' Natural food ' and drugs , the source of commercially useful gums or hydrocolloids can be summarized as follows: |
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Shrub or tree exudates |
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Acacia,Karaya,Tragacanth |
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Marine gums |
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Agar ,Algin,carrageenan |
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Seeds gums |
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Guar, Locust bean , Psyllium |
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Plant extras |
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Pectin |
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Starch and cellulose |
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Derivatives, Hetastorch, carboxymethylcellulose, |
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ethylcellulose, Hydroxyl propel, |
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Methyl cellulose, Oxidized cellulose. |
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Microbial gums |
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Dextrin ,Xanthan |
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