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ISHS Acta Horticulturae 380: Symposium on Tropical Root Crops in a Developping Economy

THE GROWTH BEHAVIOR OF SOME LINAMARIN-HYDROLYSING MICROORGANISMS IN THE CYANIDE MEDIUM OF FERMENTING CASSAVA PULP

Author:   M.A.N. Ejiofor
Abstract:
Pure cultures of some linamarin-hydrolyzing microorganisms, namely: Alcaligenes faecalis, Leuconostoc mesenteroides, and Saccharomyces cerevisiae were prepared and used to inoculate fresh cassava pulp and left to ferment at 28–30°C for 96 h. Their growth behavior in the cyanide-containing pulp (285 mg CN/kg) was observed. All the microbes grew uninhibited, with generation times of 59, 58, and 78 min, respectively. They hydrolyzed endogenous cassava linamarin, releasing 90, 94, and 102 mg CN/kg of pulp, respectively, whereas the cassava linamarase alone released only 58 mg CN/kg of pulp. Further detoxication of the pulp was achieved when these organisms were inoculated singly or mixed on the fresh pulp. This experiment was aimed at studying the possibility of producing minimum-cyanide gari, fufu or any other fermented cassava-based product.

380_85     380     380_87

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