February 15-18, 2009 Washington State Convention Center Seattle ...

THE POTENTIAL OF “LOST CROPS” IN AQUAFEED, THEIR TOXINS AND METHODS
FOR ENHANCING THEIR NUTRITIVE VALUE
Alegbeleye, W.O.*; George, F.O.A.; Obasa, S.O and Olude, O.O.
University of Agriculture
P.M.B., 2240
Abeokuta, Nigeria
segunalgbeleye@yahoo.com
This paper reviews the nutritive potential of “lost crops” as dietary protein sources in aquafeeds and reports studies on the enhancement
of their inherent composition. The crops include oilseeds (castor oil seed, Ricinus communis, Moringa oleifera and
wing bean), legumes (Lima bean, Albizia gygia, jack bean (Canavalia ensiformes)a, Pterocarpus santalinoides and Mucuna
uriens).
These plants have inherent antinutritional factors that limit their inclusion in aquafeeds, including protease inhibitors, hemaglutinnins,
allergins, toxic amino-acids (mimosine), glycocides (goitrogens, cyanogens, saponnins, phytoestrogens), phenols
(gossypol and tannins), phytic acids and poisonous fatty acids. Cheap and adaptive processing techniques (oil extraction, thermal
methods and fermentation) with potentials for inactivating and improving the nutritive value of these plant products were
examined and discussed.