Journal
INTERNATIONAL JOURNAL OF FOOD SCIENCE AND TECHNOLOGY
Volume 43, Issue 11, Pages 1913-1921Publisher
WILEY
DOI: 10.1111/j.1365-2621.2008.01743.x
Keywords
Antioxidants; banana; banana peel; beta-carotene; carotenoids; nutritional quality; provitamin A
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Banana is one of the most important tropical fruits, and India ranks first in its world production. Banana cultivars rich in provitamin A carotenoids may offer a potential food source for alleviating vitamin A deficiency, particularly in developing countries. With a view to exploit banana peels as a source of valuable components, in the present study, proximate composition, carotenoids, beta-carotene and some anti-oxidative enzymes as well as carbohydrate content of selected Indian banana varieties were determined. Karpooravalli cultivar of banana showed the maximum accumulation of carotenoid content in the non-edible (68 mu g g(-1) d.w.) portion of banana, while being the second highest in beta-carotene content (143.12 mu g per 100 g). However, Red Banana ranked highest in total carotenoid contents for pulp (4 mu g g(-1) d.w.) and beta-carotene was estimated to be the highest in the case of peels (241.91 mu g per 100 g) and in pulp (117.2 mu g per 100 g). Karpooravalli cultivar of banana is also rich in carbohydrate content in terms of total starch (1786.0 mu g g(-1) d.w. in peels and 544.85 mu g g(-1) d.w. in pulp) and sugars (53.53 mu g g(-1) d.w. in peels and 39.05 mu g g(-1) d.w. in pulp). The catalase enzyme activity in these peels ranged from 5.66 to 35.57 nmol min(-1) mg(-1) proteins and was found at a higher level in cultivar Poovan, while the ascorbate peroxidase showed the range of 2.25 to 6.22 mu mol min(-1) mg(-1) proteins. The peels of cultivars Red Banana and Karpooravalli are rich source of bioactive compounds, such as carotenoids (beta-carotene), anti-oxidative enzymes and carbohydrate contents.
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