Monitoring of volatiles in alcoholic fermentations on molasses via a gas membrane sensor |
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Authors: | Anne Groboillot Marie-Noëlle Pons Jean-Marc Engasser |
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Institution: | (1) Laboratoire des Sciences du Génie Chimique, CNRS-ENSIC-ENSAIA-INPL, B.P. 451, F-54001 Nancy Cedex, France |
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Abstract: | Summary Gas membrane sensors, connected to a gas chromatography, have been tested in fermentation on complex media of industrial interest. Selectivity, sensitivity and reliability have been assessed: the calibration on fermentation medium is recommended. The use of such a sensor is demonstrated in the study of the kinetics of batch and fed-batch alcoholic fermentations on beet molasses. The kinetics of acetaldehyde are especially pointed out in relation to ethanol, fusel alcohols and carbon dioxide production.Offprint requests to: M.-N. Pons |
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