Ethanol tolerance in free and sol-gel immobilised Saccharomyces cerevisiae |
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| Authors: | Martín F. Desimone José Degrossi Miguel D'Aquino Luis E. Diaz |
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| Affiliation: | (1) Cátedra de Química Analítica Instrumental, Argentina;(2) Cátedra de Higiene y Sanidad, Facultad de Farmacia y Bioquímica, Universidad de Buenos Aires, Junin 954 Piso 3, 1113 Ciudad Autónoma de Buenos Aires, Argentina |
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| Abstract: | The tolerance of sol-gel immobilised and free Saccharomyces cerevisiae to ethanol was studied. The effects of ethanol preincubation time showed that the specific death velocity decreased from 2×105 c.f.u. min–1 for free cells to 2×104 c.f.u. min–1 for immobilised cells thus indicating that immobilised yeast was far less sensitive to the ethanol damage. The specific glucose consumption of immobilised and free cells on a per cell basis was 3×10–12 g cell–1 h–1 and 9×10–12 g cell–1 h–1, respectively. |
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| Keywords: | ethanol tolerance immobilised Saccharomyces cerevisiae solgel |
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