Authors of this article have carried out a study on food consumption, nutrition and energetical expensens of 426 students living in halls of residence of UNILU. Results from this study show that 53, 5% of students have a standard feeding with a bodily masss index varying between 18, 5% and 25, 9%. 20, 2% of boarders are under feed, but 26, 3% are obese, and only 26, 8% have a sport practice. Needs and food supplies evaluation in regards to activities shows that the diet is characterized with two meals which the main is taken at evening, whereas food toying is picked at along the day which supply energetical needs of 51, 6% boarder students. So 28, 6% of boarders have an excessive energetical balance whereas 19, 8% show a deficit. From the above results, authors of this study plead in favor of setting up restaurants and soup kitchens in the university hall of residence. The sport practice must as well be done.
Study on feeding and nutrition of 206 bicycle carriers of charcoal has been carried out on several Lubumbashi roads, that is, Kafubu, Kasenga, Kasumbalesa, Kipopo, Likasi and Rwashi.
It results from this study that the nutritional status is standard with a body mass index of 22, 3±1, 9 for a narrow breadth person. Need and food supplies evaluation shows that they have a deficient diet in energy as well as in nutrients (proteins and lipids). These results are alike as those published in the literature. So, we plead in favour of systematic enrichment in diet supplies for this category of carries.
Antidrepanocytary activity of Ipomoea batatas, an edible and therapeutic plant used in traditional medicine of Katanga for burns and sickle cell disease was evaluated using the Emmel test. Crude extracts extracted by water, methanol and ethanol, have shown activity antidrepanocytory activity in vitro. The chemical screening showed that the leaves of Ipomoea batatas mainly contain alkaloids, flavonoids, tannins, quinones, leucoanthocyanes, saponins and steroids. The evaluation of the effect of heat, studied by UV-Visible spectrophotometry at 262nm for the aqueous extracts and at 268nm for the methanolic and ethanolic extracts by exposing extracts obtained in the oven at various times and temperatures, have shown that crude substances extracted from Ipomoea batatas are heat sensitive.
In Lubumbashi and its hinterland, somme food plants which are generating natural colourings used in traditional medicine were found This is the case of Hibiscus Sabdariffa from which some analyses have been completed in this study namely: - Moisture and total ash determination in leaves and flowers, - Chemical matter research, - Colouring extraction in water, methanol and ethanol - Biological test of extracted colourant and thermodegradation of colourants. However, the thermodegradation assessment has been studied by exposition of differents extracts got from study at different temperatures and moments, and the absorbance reading done successively at 262nm for aqueous extracts and at 268nm for both methanolic and ethanol extracts
This work aimed to make a phytochemical study of nine vegetables (Adeniagummifera, Bidenspilosa, Celosia trigyna, Crassocephalumpicridifolium, Cleome monophylla, Fagarachalybeum, Solanumnigrum, Polygonumsalicifolumand Ipomoea Aquatica) consumed in Haut-Katanga and assess their antioxidant activity. The phytochemical study showed that each specie contains at least three groups of substances including tannins (88.8%), anthocyanins (88.8%) and flavanoids (77.8%), saponins (77, 7%), alkaloids (44.4%), cyanogenic glycosides (44.4%) and terpenoids (33.3%). The evaluation of the antioxidant activity showed that vegetables studied contain substances which are able to inhibit the action of free radicals as DPPH. Indeed, all the extracts inhibited DPPH with at least 19% during 10 or 30 minutes of incubation. Furthermore, evaluation of the effect of temperature has shown that antioxidants had reached a maximum concentration at 70
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