FOOD SCIENCE ›› 2011, Vol. 32 ›› Issue (23): 87-90.doi: 10.7506/spkx1002-6630-201123016

• Basic Research • Previous Articles     Next Articles

Activating Effect of Pulsed Electric Field Treatment on Trehalose Activity in Waste Brewing Yeast Cells

WANG Mu,JIN Yan,LIU Ming-yuan,ZHANG Mei-shuo,YANG Yi,LIN Song-yi*   

  1. (Laboratory of Nutrition and Functional Food, Jilin University, Changchun 130062, China)
  • Online:2011-12-15 Published:2011-12-21

Abstract: In order to reveal the effect of pulsed electric field (PEF) treatment on trehalose activity in waste brewing yeast cells, trehalose yield was determined under varying conditions of electric field intensity, pulse number and post-treatment standing time. The data obtained showed that PEF treatment at 0-50 kV/cm and 0-10 pulses decreased trehalose yield from brewing yeast cells at pH 3.0 and that trehalose yield from waste brewing yeast cells exhibited a gradual decrease when the post-treatment standing time was over 2 h, indicating that pulsed electric field activates trehalose, leading to the degradation of trehalose in brewing yeast cells.

Key words: brewing yeast cells, pulsed electric field (PEF), trehalose, activation

CLC Number: