ABSTRACT
Plants and plant-derived products have continually been integral partners in the progress of human civilization since time immemorial, particularly in association with the customary health-care practices of the hoi polloi. Green plants produce and store an enormous variety of unique phytochemicals as metabolites. Many of these chemical entities serve as vital constituents in our foods, spices, and beverages, while some of them are extractable as chemical feed stocks for medicinal and nutraceutical preparations, as well as for synthesis of modern drugs. Development of efcient techniques for
34.1 Introduction ........................................................................................................................ 917 34.2 Benzoquinones.................................................................................................................... 918
34.2.1 Thymoquinone ...................................................................................................... 918 34.2.1.1 HPLC Determination of Thymoquinone .............................................923
