The term natural products ranges from large range of chemical compounds derived from plants

The term natural products ranges from large range of chemical compounds derived from plants, animals and micro organism. The usefulness of natural products in human beings have been traced back upto many years and still very helpful in medicine like allopathic, homeopathy, Ayurveda, agriculture, beauty products and health products in ancient and modern societies around the world. Therefore the view to access natural products, their usefulness and applications has been become a major role in the field of natural product research. In the path of finding the natural products. Biodiversity is the term which is commonly used to denote the variety of desert which is totally unimaginable how deeper we can succeed. The subject phytochemistry deals with chemical structure of secondary metabolites, their metabolism as well as their distribution and biological function. In addition there are large number of secondary metabolites usually confimed to a particular group of organism or particular species or it can be in a single strain growing under certain environmental condition. In most cases we don’t know what specific biological role these products plays expect the treasure of chemical compounds that are beneficial to us. More than thousands of natural products have been described, but use are not even an inch close to document of all the species.
Natural product belongs to following category:
1. An organism which could be a plant, an animal, or a organism that has not been subjected to any kind of processing other than a simple process of preservation (e.g., drying)
2. Part of an organism like leaves, roots, steam, bark of a plant, an isolated organ from an animal.
3. The compound which could be an alkaloid, carbohydrates, coumarin, tannin, protein, phenols, flavonoids, glycosides, is isolated from plants, animals or microorganisms.