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Original Articles

Wild Leafy Vegetables Consumed in Buhera District of Zimbabwe and Their Phenolic Compounds Content

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Pages 178-189 | Published online: 27 Feb 2013
 

Abstract

A questionnaire was used to gather information on the wild leafy vegetables consumed. The phenolic concentrations were determined by the vanillin, butanol, and tannin binding assays. Seventy-nine traditional vegetables were mentioned by the respondents and 20 of these were classified according to their species. The contents of flavonoids varied from 1.2 mg/g for Cleome gynandra to 8.0 mg/g for Bidens pilosa. The levels of proanthocyanidins ranged from 1.9 mg/g for lettuce to 11.2 mg/g for Bidens pilosa. The tannin contents of the vegetables ranged from 5.7 mg/g for Cleome gynandra to 8.3 mg/g for Bidens pilosa. The present study showed that these vegetables are valuable sources of phenolic compounds as compared to some exotic species.

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