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close this bookBioconversion of Organic Residues for Rural Communities (UNU, 1979)
close this folderSolid state fermentation of starchy substrates
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View the documentMaterials and methods
View the documentAgro-economic perspectives
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Protein enrichment of starchy materials was achieved by a simple, inexpensive process of solid state fermentation not requiring aseptic conditions and workable at the farm or village level for direct animal feeding. From cassava, banana refuse, potatoes, and other substrates potentially available in tropical or temperate climates, the process provides foodstuffs containing up to 20 per cent protein and 35 per cent residual sugars. On the basis of 40 tons productivity (harvest weight) per hectare, cassava and potatoes could thus provide four times more protein per hectare than is obtained by soybean cultivation. Hence, its agro-economic prospects compete favourably with the cultivation of corn, wheat, and soybeans.