Page 485 - Applied Pharmacognosy

• 4. to detect insect fragments, in case of infestation.
• It is a measure of the content of the particles which resist the

effect of dilute mineral acids and dilute alkali such as Sclerieds,
Vessels and Fibers.

• The detection of adulterants as olive stones, coconut shells is

much more facilitated by preparing the crude fiber, which
concentrate the resistant parts of the adulterants in a small
amount of tissues.

• It is particularly useful for rhizomes such as Ginger which contain

relatively large amounts of oleoresin and starch.