Influence of Water Potential on gamma-Decalactone Production by the Yeast Sporidiobolus salmonicolor.
The influence of water potential on gamma-decalactone production by the yeast Sporidiobolus salmonicolor cultivated in a liquid medium was evaluated by gas-chromatographic analysis. Modifications in water potential led to a number of variations in the aroma production. Maximum extracellular production occurred at water activity (a(w)) with a value of 0.99. Further analyses revealed an important phenomenon of cellular accumulation of aroma for a(w) values between 0.97 and 0.99.
Gervais
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ENSBANA, Laboratoire de Biologie Physico-Chimique, Campus Universitaire Montmuzard, 21000 Dijon, France.
Battut
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