NURSING EXAM QUESTIONS
PHARMACOGNOSY
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Tannic acid is an astringent and an alkaloidal precipitant
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True
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False
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Either A or B
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None of the above
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Explanation:
Detailed explanation-1: -Tannins precipitate alkaloids and proteins and have been used in cases of alkaloid poisoning.
Detailed explanation-2: -Tannic acid is a type of polyphenol and is also called Acidum tannicum or Gallotannic acid. Tannic acid has numerous phenol groups and hence is a weak acid. It is obtained naturally from tara pods, Quercus infectoria, gallnuts from Rhus semialata, Sicilian Sumac leaves.
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