Evaluation of Crude Drugs

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Chapter: Pharmacognosy and Phytochemistry : Evaluation of Crude Drugs

Evaluation of a drug ensures the identity of a drug and determines the quality and purity of drugs. The main reasons behind the need for evaluation of crude drugs are biochemical variation in the drug, effect of treatment and storage of drugs, and the adulterations and substitutions.


Evaluation of Crude Drugs

INTRODUCTION

 

Evaluation of a drug ensures the identity of a drug and determines the quality and purity of drugs. The main reasons behind the need for evaluation of crude drugs are biochemical variation in the drug, effect of treatment and storage of drugs, and the adulterations and substitutions.

 

Improvements in analytical methods have definitely led to improvements in harvesting schedules, cultivation techniques, storage, activity, stability of active compounds, and product purity. All of these gains have resulted in tre-mendous improvements in the quality of herbal prepara-tions now available.

 

Methods currently employed in evaluating herbs are organoleptic, microscopic, physical, chemical, and biological parameters.

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