Lead(II) uptake during baker's yeast production by aerobic fermentation of molasses

P Skountzou, M Soupioni, A Bekatorou, M Kanellaki, AA Koutinas, R Marchant, Ibrahim Banat

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Lead(II) removal through biosorption on baker's yeast during biomass production was studied to estimate the level of uptake from contaminated molasses medium and to monitor its impact on cell growth. Lead(II) additions had significant negative effects on growth. Concentrations above 50 mgl(-1) resulted in a 50% reduction in growth rate and 60% lower overall biomass yields compared to controls. Nevertheless, the decrease in yeast biomass did not lead to decreased lead(II) uptake, on the contrary the biosorption ability was higher at higher initial lead(II) concentrations. (C) 2003 Elsevier Science Ltd. All rights reserved.
Original languageEnglish
Pages (from-to)1479-1482
JournalProcess Biochemistry
Issue number10
Publication statusPublished - May 2003


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