Abstract: There are vast amount of phytochemicals which can act as antioxidants in the natural means. Plants are one of the rich source of natural antioxidants. Antioxidants are the compounds which can prevent oxidation reaction. Besides this, they can also contribute metabolic activities in plants. In the present study, tubers were examined to determine their antioxidant potential. For this purpose, five native tubers namely Dioscorea esculenta, Borassus flabellifer, Solanum tuberosum, Ipomoea batatas and Manihot esculenta were selected. Among the five selected tubers, the highest phenolic content was observed in Manihot esculenta (0.183mg/100g) and was found to be least in Dioscorea esculenta (0.0598mg/100g). Tannin, flavonoid and alkaloid were found to be high in Dioscorea esculenta (1909.9mg/100g, 225mg/100g and 914.24mg/100g respectively). Tannin was found to be minimal in Solanum tuberosum (229.99mg/100g). Flavonoid was observed to be least in Solanum tuberosum (88.7mg/100g) and alkaloid was least in Ipomoea batatas (427.39mg/100g). High concentration of saponin was found in Borassus flabellifer (32.7157mg/100g) and was low in Solanum tuberosum (4.715mg/100g). Terpenoid was found to be the highest in Solanum tuberosum (60.41mg/100g) and lowest in Manihot esculenta (45.828mg/100g). The study reveals that the selected tubers contain antioxidants namely, alkaloid, flavonoid, phenol, tannin, saponin and terpenoid. Low tannin is favourable for our health. So, Solanum tuberosum (229.99mg/100g) is the good source for tannin. Because of the present relevance of natural antioxidants in modern medical field, this study would be a leading path way of information for selection of the extract for various pharmacological activities.
Keywords: Antioxidants, Phenol, Flavonoid, Alkaloid, Tannin.
Title: QUANTITATIVE ASSESSMENT OF ANTIOXIDANTS IN FIVE NATIVE TUBERS IN KERALA
Author: Suvarna .S, Veena .R.K, Silpa .S.P
International Journal of Interdisciplinary Research and Innovations
ISSN 2348-1218 (print), ISSN 2348-1226 (online)
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