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Journal of Applied Sciences and Environmental Management
World Bank assisted National Agricultural Research Project (NARP) - University of Port Harcourt
ISSN: 1119-8362
Vol. 21, No. 4, 2017, pp. 771-774
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Bioline Code: ja17083
Full paper language: English
Document type: Research Article
Document available free of charge
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Journal of Applied Sciences and Environmental Management, Vol. 21, No. 4, 2017, pp. 771-774
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Proximate, Mineral and Phytochemical Composition of Dioscorea dumetorum Pax
NIMENIBO-UADIA, RI & ORIAKHI, AV
Abstract
Proximate, mineral and phytochemical composition of Dioscorea dumetorum
tubers was investigated using standard procedures. Proximate analysis included in g% dry
weight: crude protein (6.44 ± 0.32), crude fat (0.75 ± 0.04), crude fibre (15.00 ± 0.56), total ash
(3.45 ± 0.20) and a moisture content of 70.04 ± 2.37 g% wet weight. A low value of 19.36%
was recorded for total carbohydrate and 109.95 kcal/100g as calorific content. Mineral analysis
revealed this order in concentration K>Mg>Na>Ca>Fe>Mn>Cu>Zn>P. Potassium and
magnesium levels were 17,036.00 and 1,630.50 ppm respectively. Phytochemical screening of
the tuber revealed the presence of flavonoids, alkaloids, saponins and cardiac glycosides.
Tannins and anthraquinones were not detected. The results justify the medicinal use of the tuber
and suggest it could contribute to the nutrition of man and animal. Its low calorific content may
be beneficial to dieters.
Keywords
Dioscorea dumetorum; proximate composition; mineral analysis; phytochemical screening
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© Copyright 2017 - Journal of Applied Sciences and Environmental Management
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