Abstract
Ogiis processed traditionally by the use of ‘uncontrolled’ spontaneous fermentation of maize, sorghum and millet. In this study, traditionally applied spontaneous fermentation was compared with accelerated batch fermentation (or back-slopping) and the use of starter cultures to initiate fermentation. Lactic acid bacteria populations comprised ≥95 of the total viable bacteria and remained prominent throughout the fermentations, while number of moulds and coliform bacteria declined as the fermentation progressed. The fermentation method involving the application of starter culture helps most to control the prevalence of coliforms and moulds. Lactic acid bacteria, such as Lactococcus raffinolactis, Pediococcussp.,Pediococcus pentosaceus, Lactobacillus plantarum, Lb. suebicus and Lb. brevis,were isolated at different processing stages of ogi using accelerated batch fermentation (back-slopping) technique. Highest increase in acidity was observed immediately after wet-milling and sieving fermenting maize grains at 28 and 48 h. Sharp increases in the reducing sugar levels were noted between 24 and 28 h of fermentations during wet-milling and sieving processes.
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Teniola, O.D., Holzapfel, W.H. & Odunfa, S.A. Comparative assessment of fermentation techniques useful in the processing of ogi. World J Microbiol Biotechnol 21, 39–43 (2005). https://doi.org/10.1007/s11274-004-1549-1
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DOI: https://doi.org/10.1007/s11274-004-1549-1