Background: Chayote, an underutilised vegetable has gained widespread acceptance owing to phytochemicals, antioxidant activity and biofunctional properties presence that can prevent oxidation of metabolites in humans. The present research focussed on to analyse the bioactive profile and antioxidant activity of fresh and osmotically dehydrated Chayote. 
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Methods: L- Ascorbic acid was estimated by dichlorophenolindophenol titration method, total phenolic compound was estimated by Folin-Ciocalteu method, total flavonoid compound was determined by aluminium chloride colorimetric method, DPPH (2, 2-diphenyl-1-picryl hydrazyl-hydrate) was estimated by stable radical DPPH, ꞵ-carotene was estimated by UV- Spectrometric method, Ferric reducing ability of plasma (FRAP) was estimated by Benzie and Strain method and Tannins was estimated by Folin- Denis Method. Data obtained was analyzed statistically for mean, standard seviation, ANOVA and LSD (Least significance difference). 
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Result: Results indicated significant increase (p&le;0.05) in both bioactive compounds and antioxidant activity upon the application of osmotic dehydration. The process of osmotic dehydration significantly retained higher concentration of bioactive compounds and showed higher antioxidant activity as mild conditions helps in preserving these oxidative sensitive compounds and retains their potential as compared to conventional dehydration, with prolonged exposure to high temperature and more air exposure.

Effect of Osmotic Dehydration Technique on Bioactive and Antioxidant Properties of Chayote (Sechium edule)