Reduction of acetaldehyde to ethanol by some micro-organisms and its stereospecificity. |
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| Authors: | E Maconi A Griffini V Cavazzoni and F Aragozzini |
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| Institution: | Dipartmento di Scienze e Tecnologie Alimentari e Microbiologiche, Facoltà di Agraria, Università degli Studi di Milano, Italy. |
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| Abstract: | The stereochemical course of the reduction of acetaldehyde to ethanol was investigated by evaluating, with the enzymic system yeast alcohol dehydrogenase/diaphorase and g.c.-m.s., the configuration of 1-2H]ethanol obtained from 1-2H]acetaldehyde with different micro-organisms. Although only S-1-2H]ethanol was formed, all the micro-organisms showed evidence of the existence of alcohol dehydrogenases with opposite stereospecificity. |
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