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Article

Effect of Must Turbidity on Cell Wall Porosity and Macromolecule Excretion of Saccharomyces cerevisiae Cultivated on Grape Juice

Stéphane Boivin, Michel Feuillat, Hervié Alexandre, Claudine Charpentier
Am J Enol Vitic.  1998  49: 325-332  ; DOI: 10.5344/ajev.1998.49.3.325
Stéphane Boivin
Institut Universitaire de la Vigne et du Vin, Laboratoire d'Oenologie, B.P. 138, F-21004 Dijon Cedex, France.
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Michel Feuillat
Institut Universitaire de la Vigne et du Vin, Laboratoire d'Oenologie, B.P. 138, F-21004 Dijon Cedex, France.
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Hervié Alexandre
Institut Universitaire de la Vigne et du Vin, Laboratoire d'Oenologie, B.P. 138, F-21004 Dijon Cedex, France.
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Claudine Charpentier
Institut Universitaire de la Vigne et du Vin, Laboratoire d'Oenologie, B.P. 138, F-21004 Dijon Cedex, France.
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Abstract

Mannoproteins have a great technological importance such as improvement of proteic and tartaric acid stability or the stimulation of lactic acid bacteria, but their production in wine is still poorly understood. The influence of grape juice turbidity on Saccharomyces cerevisiae cell wall characteristics was studied. Grape juice insoluble particles and colloids were shown to have no influence on yeast cell wall porosity during the lag time but their absence led to increased yeast cell wall porosity at the end of growth phase. Cell wall porosity increased during cell growth and decreased at the transition from the growing phase to the stationary phase. Leakage of cell wall components was linked with cell wall porosity and composition. Such components were freed during growth and during the stationary phase entrance but not during the stationary phase. Compared with a non-clarified medium (380 NTU), a clarified medium (34 NTU) caused the cell wall composition to exhibit a higher proteic content and a lower mannose content. These results suggest that the removal of grape juice particles and colloids has an action on the cell wall synthesis of proliferating yeast i.e. by lowering the glycosylation of mannoproteins. This finding is in agreement with the high cell wall porosity observed and the macromolecule excretion.

  • Chardonnay
  • mannoproteins
  • cell wall composition
  • Received April 1997.
  • Revision received August 1997.
  • Copyright 1998 by the American Society for Enology and Viticulture

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Effect of Must Turbidity on Cell Wall Porosity and Macromolecule Excretion of Saccharomyces cerevisiae Cultivated on Grape Juice
Stéphane Boivin, Michel Feuillat, Hervié Alexandre, Claudine Charpentier
Am J Enol Vitic.  1998  49: 325-332  ; DOI: 10.5344/ajev.1998.49.3.325
Stéphane Boivin
Institut Universitaire de la Vigne et du Vin, Laboratoire d'Oenologie, B.P. 138, F-21004 Dijon Cedex, France.
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Michel Feuillat
Institut Universitaire de la Vigne et du Vin, Laboratoire d'Oenologie, B.P. 138, F-21004 Dijon Cedex, France.
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Hervié Alexandre
Institut Universitaire de la Vigne et du Vin, Laboratoire d'Oenologie, B.P. 138, F-21004 Dijon Cedex, France.
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Claudine Charpentier
Institut Universitaire de la Vigne et du Vin, Laboratoire d'Oenologie, B.P. 138, F-21004 Dijon Cedex, France.
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Effect of Must Turbidity on Cell Wall Porosity and Macromolecule Excretion of Saccharomyces cerevisiae Cultivated on Grape Juice
Stéphane Boivin, Michel Feuillat, Hervié Alexandre, Claudine Charpentier
Am J Enol Vitic.  1998  49: 325-332  ; DOI: 10.5344/ajev.1998.49.3.325
Stéphane Boivin
Institut Universitaire de la Vigne et du Vin, Laboratoire d'Oenologie, B.P. 138, F-21004 Dijon Cedex, France.
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Michel Feuillat
Institut Universitaire de la Vigne et du Vin, Laboratoire d'Oenologie, B.P. 138, F-21004 Dijon Cedex, France.
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Hervié Alexandre
Institut Universitaire de la Vigne et du Vin, Laboratoire d'Oenologie, B.P. 138, F-21004 Dijon Cedex, France.
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Claudine Charpentier
Institut Universitaire de la Vigne et du Vin, Laboratoire d'Oenologie, B.P. 138, F-21004 Dijon Cedex, France.
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