Natural products are the organic compounds which are isolated and extracted from the body of naturally existing organisms are collectively known as natural products. They are formed through photosynthesis and biochemical reaction inside the bodies of animals and plants. For example, starch comes from the seeds, stems and roots block of plants; meat, dairy products, eggs and cereals, beans are the basic source of protein; many drugs such as ephedrine, menthol and gall bladder are extracted from the corresponding organisms; indigo blue dye, red dye alizarin are respectively extracted from natural indigo leafs and madder; natural spices musk, jasmine, and rose also originate from the corresponding animal and plant body.
