Estimation of Polyphenol and Antioxidant Content from Papaya (Carica papaya) and Mango (Mangifera indica) Seed, Peel and Leaves

Abstract : Papaya (Carica papaya) and mango (Mangifera indica) are two tropical fruits which are widely known for their rich nutritional properties and various health benefits. Papaya belongs to family Caricaceae which has its origin in South Mexico. Mango belongs to the family Anacardiaceae and were originated from India and southern China. As the pulp of these fruits is known to be consumed rapidly while their seeds, peels and leaves are often thrown away as waste. This study involves the estimation of total polyphenol and anti-oxidant activity of the by-products of papaya and mango fruits. The anti-oxidant activity by DPPH method of % inhibition of papaya seed=180 peel=125 leaves=64 is higher compared to mango by-products. In FRAP, ABTS, Radical Cation method of mango samples shown higher levels than papaya. Vitamin c content of mango seeds exhibits high as 15.6mg/100g compared to papaya seed, papaya peel and leaves has higher levels of vitamin c compared to mango peel and leaves. The total polyphenol activity (GAE/g) of mango seed=118.4, peel=55.31, leaves=19.04 exhibits higher value compared to papaya. Papaya seed and peel has more beta carotene content compared to mango whereas mango leaves shown more beta carotene content than papaya. Seeds of papaya and mango has 2.05% and 2.15% pectin, mango peel has more pectin content than papaya 12.45%>8.94% and mango peel has shown slightly more pectin content than papaya as 4.25>3.58. Papaya peel have medium number of abundances of tannin content, seeds and leaves have less in number whereas mango have equal amounts of abundance of tannin content. This study mainly features the importance of the bioactive compounds found in the by-products (seed, peel, leaves) of papaya and mango and their health benefits.