Abstract
The cells of Saccharomyces cere6isiae ATCC 24553, were immobilized in k-carrageenan and packed in a tapered
glass column reactor for ethanol production from pineapple cannery waste at temperature 30°C and pH 4.5. The
maximum productivity was 42.8 g ethanol 11 h1 at a dilution rate of 1.5 h1. The volumetric ethanol productivity
of the immobilized cells was ca. 11.5 times higher than the free cells. The immobilized cell reactor was operated over
a period of 87 days at a dilution rate of 1.0 h1, without any loss in the immobilized cell activity. The maximum
specific ethanol productivity and specific sugar uptake rate of the immobilized cells were 1.2 g ethanol g1 dry wt.
cell h1 and 2.6 g sugar g1 dry wt. cell h1, respectively, at a dilution rate of 1.5 h1. © 2000 Elsevier Science B.V.
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