Abstract
AbstractImprovements in maximum growth rate and productivity in biomass production using orange peel as promoter were observed in batch aerobic fermentation. Daily biomass productivity and biomass yield up to 14.9 g (dry weight) L−1 and 0.22 g (dry weight) g−1 utilized sugar respectively in batch aerobic fermentation by the presence of orange peel as promoter were reported. A novel bioreactor for continuous aerobic fermentation of molasses is described and its suitability for baker's yeast production using orange peel as promoter is investigated. The continuous bioreactor was operated for 12 days, stored for 20 days at 10 °C and operated again for another 13 days without any diminution of biomass productivity. Daily biomass productivity, yield and conversion up to 11.2 g (dry weight) L−1, 0.16 g (dry weight) produced g−1 utilized sugar and 90.4% respectively were recorded. The possibility of using such a system for industrial continuous baker's yeast production is discussed. Copyright © 2005 Society of Chemical Industry
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