%0 Journal Article
%9 ACL : Articles dans des revues avec comité de lecture non répertoriées par l'AERES
%A Agbor-Egbe, T.
%A Trèche, Serge
%T Evaluation of the chemical composition of cameroonian yam germplasm
%D 1995
%L fdi:010009039
%G ENG
%J Journal of Food Composition and Analysis
%@ 0889-1575
%K IGNAME ; CULTIVAR ; GERMOPLASME ; COMPOSITION CHIMIQUE ; TABLE DE COMPOSITION ; ETUDE COMPARATIVE ; ANALYSE MULTIVARIABLE ; VALEUR NUTRITIONNELLE
%K CAMEROUN
%P 274-283
%R 10.1006/jfca.1995.1020
%U https://www.documentation.ird.fr/hor/fdi:010009039
%> https://horizon.documentation.ird.fr/exl-doc/pleins_textes/pleins_textes_6/b_fdi_45-46/010009039.pdf
%V 8
%W Horizon (IRD)
%X The chemical composition of 98 cultivars belonging to eight yam species extensively grown and consumed in Cameroon was evaluated. Due to the fact that statistical analysis showed no significant differences between the means obtained for the variables estimated for #Dioscorea cayenensis$ and #D. rotundata$ cultivars, these two yam species have been treated in this study as a single species termed #D. cayenensis/rotundata$ complex. On the basis of dry matter content, the yam species could be divided into three groups, low (23-25 g/100 g, #D. alata$, #D. dumetorum$, and #D. schimperiana$), intermediate (28-30 g/100 g, #D. esculenta and #D. bulbifera$), and high (32-37 g/100 g, #D. cayenensis/rotundata$ complex and #D. liebrechtsiana$). There was a great variability in protein levels among the yam species, which make possible the selection of protein-rich cultivars. Mean fat levels were very low (0,1-0,9 g/100 g). Starch contents ranged from a mean value of 70,4 to 72,9 g/100 g, except for #D. cayenensis/rotundata$ complex and #D. liebrechtsiana$, which had levels higher than 80 g/100 g. #D. dumetorum$ tubers had the highest levels of plant cell wall carbohydrates and almost all the minerals analyzed. multivariate analysis has shown that some of the variables estimated and chosen in a stepwise manner could be used with a low probability error to differentiate among cultivars within a yam species. (Résumé d'auteur)
%$ 054ALIM02