Nutrient composition and protein quality of wild gathered foods from Mali
作者:
NordeideM. Beseth,
HolmH.,
OshaugA.,
期刊:
International Journal of Food Sciences and Nutrition
(Taylor Available online 1994)
卷期:
Volume 45,
issue 4
页码: 275-286
ISSN:0963-7486
年代: 1994
DOI:10.3109/09637489409166168
出版商: Taylor&Francis
数据来源: Taylor
摘要:
For developing countries only limited information is available on nutritive composition of foods in general and of gathered foods in particular. This paper presents the nutritive composition and nutritional quality of wild gathered foods from Malian Gourma. Important wild staples used by nomads were collected in the dry season. The samples included grains ofCenchrus biflorusandPanicum laetum, green leaves of theMaerua crassifoliaand roots ofNymphaea lotus. C. biflorushad the highest concentrations of protein (22.1%), fat (7.3%) and gross energy (1880 kJ/100 g). Among the fractions ofP. laetumthe dehusked grains were richest in protein (12.4%), total carbohydrates (82.1%) and gross energy (1630 kJ/100 g). The first limiting amino acid, irrespective of the fraction of the grains, was lysine. The biological studies of the protein quality confirmed the findings in chemical analysis and calculations of chemical scores. Both methods, the calculations of chemical scores and of biological values, gave results showing that the grains ofC. biflorusandP. laetumhad low protein quality. The net effect of boiling the wild grains did not improve protein quality. As a source of available high quality protein boiled leaves ofM. crassifoliahad higher quality than wild gathered grains, andC. biflorushad higher quality than the fractions ofP. laetum.Roots of water lilies, theN. lotus, were found to have a balanced amino acid composition. In order to improve the protein quality the wild gathered grains need to be supplemented or combined with other foods rich in lysine. Milk, an important food in the area, is a good source of lysine. Prepared green leaves ofM. crassifoliaand roots ofN. lotusseem to be of high nutritional quality and may also be recommended to improve the nutritional quality of diets dependent on gathered and cultivated grains.
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