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International Journal of Innovation and Scientific Research
ISSN: 2351-8014
 
 
Saturday 17 November 2018

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Evaluation of anti-nutritional factors and nutritive values of four wild edibles vegetables consumed at Kisangani city and its surroundings (Tshopo province, DR Congo)


[ Evaluation de la valeur nutritive et des facteurs antinutritionnels de quatre légumes alimentaires sauvages consommées à Kisangani et ses environs (Province de la Tshopo, RD Congo) ]

Volume 30, Issue 1, April 2017, Pages 75–90

 Evaluation of anti-nutritional factors and nutritive values of four wild edibles vegetables consumed at Kisangani city and its surroundings (Tshopo province,
DR Congo)

Jacques N.B. Tchatchambe, Basile E. Solomo, Francine B. Kirongozi, Crispin B. Lebisabo, Benoît D. Dhed'a, Jacques W.B. Tchatchambe, Nadège K. Ngombe, Pius T. Mpiana, Théophile F. Mbemba, and Koto-te-Nyiwa Ngbolua

Original language: French

Received 3 October 2016

Copyright © 2017 ISSR Journals. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract


A study on the toxic and nutritional values of four wild vegetables (Ipomoea aquatica, Dewevrea bilabiata, Vitex welwitschii and Vernonia hochstetteri) was performed before and after cooking. In this study, it appears that these wild vegetables can be dietary supplements of values in those for crude protein, fat, calcium, magnesium, iron, phosphorus and vitamins (A, B1, B2, B6 and C). The leaves of Ipomoea aquatica are particularly rich in lipids (21 gr/100 gr), vitamin B2 (0.38 mg %), vitamin C (0.2 mg%). The Dewevrea bilabiata leaves are rich in crude protein (0.04 mg/100g r), vitamin B2 (0.38 mg%), vitamin B6 (0.8 mg%), vitamin C (0.2 mg%) and leaves of Vitex welwitschii rich in vitamin A (0.75 mg/100 gr), vitamin B1 (1.33 mg/100 gr), vitamin C (0.2 mg%). However, these vegetables also contain some undesirable substances including alkaloids, tannins, flavonoids, sterols and terpenes, traces of toxic substances such as cyanide and nitrites before cooking. After cooking, these substances and toxic components disappear. Similarly, cooking significantly reduced the levels of different nutrients. All these results justify the use of these plants in the diet of the population living around Kisangani city. A cooking these vegetables at moderate temperatures is recommended.

Author Keywords: Nutritional therapy, wild edible plants, chemical composition, anti-nutritional factors, RD Congo.


Abstract: (french)


Une étude sur la valeur nutritive et toxique de quatre légumes sauvages (Ipomoea aquatica, Dewevrea bilabiata, Vitex welwitschii et Vernonia hochstetteri) a été effectuée avant et après cuisson. De cette étude, il ressort que ces légumes sauvages peuvent constituer des compléments alimentaires de valeur en ce qui concerne les protéines brutes, les lipides, le calcium, le magnésium, le fer, le phosphore et les vitamines (A, B1, B2, B6 et C). Les feuilles d’Ipomoea aquatica sont particulièrement riches en lipides (21 gr/100 gr), vitamine B2 (0,38mg %), vitamine C (0,2 mg %). Les feuilles de Dewevrea bilabiata sont riches en protéines brutes (0,04 mg/100 gr), vitamine B2 (0,38 mg %), vitamine B6 (0,8 mg %), vitamine C (0,2 mg%) et les feuilles de Vitex welwitschii riches en vitamine A (0,75 mg/100 gr), vitamine B1 (1,33 mg/100 gr), vitamine C (0,2 mg%). Cependant, ces légumes contiennent également quelques substances indésirables notamment les alcaloïdes, les tannins, les flavonoïdes, les stérols et terpènes, des traces des substances toxiques telles que nitrites et cyanures avant cuisson. Après cuisson, ces substances indésirables et toxiques disparaissent. De même, la cuisson a considérablement réduit la teneur des différentes substances nutritives. L’ensemble de ces résultats justifie l’utilisation de ces plantes dans l’alimentation de la population des environs de Kisangani. Une cuisson de ces légumes à des températures modérées est recommandée.

Author Keywords: Nutrithérapie, plantes alimentaires sauvages, composition chimique, facteurs antinutritionnels, RD Congo.


How to Cite this Article


Jacques N.B. Tchatchambe, Basile E. Solomo, Francine B. Kirongozi, Crispin B. Lebisabo, Benoît D. Dhed'a, Jacques W.B. Tchatchambe, Nadège K. Ngombe, Pius T. Mpiana, Théophile F. Mbemba, and Koto-te-Nyiwa Ngbolua, “Evaluation of anti-nutritional factors and nutritive values of four wild edibles vegetables consumed at Kisangani city and its surroundings (Tshopo province, DR Congo),” International Journal of Innovation and Scientific Research, vol. 30, no. 1, pp. 75–90, April 2017.