Nutritional and phytogeriatological studies of three varieties of Gnetum africanum ('afang')

acide organique antinutritional factors contenido proteico crude fibre dietary fibres digestibilidad digestibility facteur antinutritionnel factores antinutricionales fibra bruta fibra de la dieta fibre alimentaire fibre brute glucosinolate glucosinolates glucosinolatos gnetum hortalizas de hoja leaf vegetables nigeria nutritive value organic acids oxalate oxalates oxalatos protein content taninos tannin tannins valeur nutritive valor nutritivo variedades varieties