Thiols, characterised by having sulfhydryl derivatives of organic sulfurs, play a pivotal role in the antioxidant defense system as well as in protein synthesis, formation, redox-sensitive signal transduction, cellular growth and proliferation, organising programmed cell death, and the immune system. Recent studies show that fruits, vegetables, and species have significant amounts of biothiols like glutathione (GSH), cysteine (Cys), homocysteine (HCys), g-glutamyl cysteine (GGC), and captopril (CAP)