which microchemical test is used for detecting the aleurone grains present in T.S. of fennel
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Explanation:
Fennel contains volatile oil (1-4%), fixed oil (9-12%) and proteins (20%). The chief constituents of volatile oil are a phenolic ether anethole (50-60%) and ketone fenchone (18-20%). Anethole has an aromatic odour and sweet taste whereas fenchone has a camphoraceous odour and taste. Volatile oil also contains methyl chavicol, anisic aldehydes, α and β- pinene, ascorbic acid, niacin, riboflavin, etc.
Adulterants:
The drug is adulterated with exhausted fennel from which volatile oil has been extracted out by steam distillation or volatile oil has been removed by treating with alcohol.
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