Emerging green technologies for the chemical standardization of botanicals and herbal preparations

•Emerging green approaches for the chemical standardization of medicinal plants.•Recent development of extraction technologies that eliminate use of solvents.•Solvent-free techniques for analysis of constituents in botanical extracts.

As botanicals and many medicinal plants can be processed to become a food or a health supplement, a drug or cosmetics, chemical standardization is important for their quality control. Hence, the selection of appropriate extraction technologies and analytical techniques is required to provide a solvent-free solution for the chemical standardization of botanicals and herbal preparations.