Characteristics Of Tannins are.......
CHARACTERISTICS OF TANNINS
1) Tannins are colloidal solutions with
water.
2) Non crystalline substance.
3) Soluble in water (exception of some
high molecular weight structures), alcohol, dilute alkali, and glyc-erin.
4) Sparingly soluble in ethyl acetate.
5) Insoluble in organic solvents,
except acetone.
6) Molecular weight ranging from 500 to
>20,000.
7) Oligomeric compounds with multiple
structure units with free phenolic groups.
8) Can bind with proteins and form
insoluble or soluble tannin—protein
complexes.
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