

The therapeutic use of herbal crude medicines in different rural and urban communities is most of the time regulated by their traditional beliefs, and thus a majority of the herbal drugs are used as “folk” medicines and well practiced since long past. According to the World Health Organization (WHO), about 80% of patients in India still, rely on the practitioners of the traditional system of medicines.
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Despite the vast scientific development in contemporary medicine, Ayurvedic system of medicine is widely practiced and accepted by people not only in India but also in many developed countries. About 80% of the world’s population still depends on the traditional system of medicine for curing several health hazards. but, besides these primary chemicals, the plants further provide just so-called secondary metabolites, which are specific to some taxonomic groups (families, genera).

Some of these chemicals are primary metabolites, which consist of proteins (amino acids), carbohydrates, fats, nucleic acids, etc. Living plants produce a vast quantity of chemicals required for their performance and improvement.
