The feasibility of using ultrafiltration (UF) for removal of oligosaccharides from aqueous extracts of soybeans was investigated. Soybeans were soaked, blanched, ground, prefiltered, and the resulting full‐fat extract processed in a hollow fiber UF unit. Initial permeate flux of 43‐60 L/m 2 /hr at 3.5% total solids decreased semi‐logarithmically to 13 L/m 2 /hr at 14% total solids. Low pH resulted in higher flux. Rates of removal of oligosaccharides closely followed theoretical behavior for a nonrejected solute during ultrafiltration and continuous diafiltration, and up to 96% could be removed by a two‐stage UF process. Final product assayed 60% protein, 35% fat and 0.6% oligosaccharides (dry basis).
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OMOSAIYE et al. (1978) studied this question.
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