Vol. 5, No. 10, p. 427-432 - Aug. 31, 2018
Analysis of nutrient composition and phytochemicals of wild yams Dioscorea pentaphylla L. and Dioscorea oppositifolia Griseb.
Singaravelan Vivek and Segar Prakash
Yam is common name for the genus Dioscorea and considered as good sources of essential dietary nutrients. It has nutritional superiority over the tropical root crops. Understanding the nutritional values of yams, the nutrient contents of two yams, Dioscorea pentaphylla and Dioscorea oppositifolia have been analysed in the present study. During the study, the higher amount of moisture, crude protein, nitrogen, free sugars and buffer protein were estimated and analysed. The rich carbohydrate and calorific value, higher amount of fat and amino acids were observed in D. pentaphylla as compared to D. oppositifolia. The crude fiber and ash contents were comparatively higher in D. oppositifolia. Preliminary phytochemical analysis reveals the presence of alkaloids, flavonoids, glycosides, phenol, reducing sugars, saponins, steroids, tannins and triterpinoids in methanolic extract of both tubers.
Buffer protein; Carbohydrate; Moisture; Nutrients; Phytochemical.
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