Quinones are intriguing substances with distinctive properties and several
significant biological and chemical functions and applications. Quinones are found in
many parts of nature, including the tissues of plants and animals. They have several
important roles in biological systems, for example, in the electron transport process to
preserve plants' and animals' biological processes, in the form of plastoquinone and
phylloquinone to be a part of photosynthesis in plants, and in the posttranslational
modification of proteins and others. On essentiality grounds, they need to be detected
and determined from the natural and synthetic samples. This chapter incorporates the
detection and determination methods for various natural and synthetic quinones, viz.,
titrimetric methods, spectrophotometric methods, HPLC-based methods, and GC-M-
-based methods.
Keywords: GC-MS, HPLC, Titrimetric methods, Quinones.
