Title of article :
Evaluation of injury to Saccharomyces rouxii YSa40 cells in low water activity/pH glycerol/CPB stress system
Author/Authors :
Yeoh, T. K. Taylor’s University - School of Culinary Arts - Division of Hospitality and Culinary Arts, Malaysia , Cheah, Y. K. Universiti Putra Malaysia - Faculty of Medicine and Health Sciences - Department of Biomedical Science, Malaysia , Davies, R. University of Reading, UK
Abstract :
Mid-exponential phase Saccharomyces rouxii YSa40 cells subsequently stressed at low aw/pH in the 0.64 aw/pH 3.5 glycerol/CPB system became injured. Such injury was detected by the loss of ability of the stressed population to form colonies on secondary-stress plating medium (glycerol/BM agar at 0.94 aw/pH 3.5 (lactic acid)) while colony forming ability on secondary non-stress plating medium (sugars/BM agar at 0.94 aw/pH 3.5 (lactic) was unaffected. The injury was shown to be due to sensitivity to glycerol/lactic acid. Results of the present study will be useful for achieving complete decontamination of ‘Intermediate Moisture Foods’ against xerotolerant molds and yeast.
Keywords :
Decontamination , water activity , intermediate moisture foods , injury , physical treatments
Journal title :
International Food Research Journal
Journal title :
International Food Research Journal
