Biochemistry is the field of science that involves the chemical composition and the undergoing reactions due to it; within all living cells of an organism. Plant Biochemistry mainly deals with the structure and function of the components of cells such as carbohydrates, proteins and other such associated biomolecules. Currently, there are three main fields of biochemistry. First, being the plant biochemistry which deals with the biological processes such as photosynthesis as a part of the biochemistry of self-sufficient autotrophic plants. Second, is general biochemistry which involves both animal and plant biochemistry. Third is medicinal/human biochemistry which involves medical illnesses as well as human biochemistry, plant biochemistry is particularly associated with plant specific biochemical procedures.

Plant biochemistry typically deals with the function and structure of components of cells and continuous biological processes such as photosynthesis. Plants generate a broad range of chemical compounds that have highly unique and unusual properties by means of which they adapt to their surrounding environment. For instance, pigments commpnly found in flowers of green plants are used to detect light or absorb sunlight. Different plants generate other chemical products such as rubber or biofuel which are of commercial importance to humans. The most significant and unique compounds of plants are those that are concerned with pharmacology such as digitalis, morphine, and salicylic acid which is aspirin. Plant biochemistry is of high interest as pharmaceutical and drug companies spend billions in this field upon research that will provide potential medical benefits.