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.
Goat milk is a highly nutritious and an ideal wholesome food. Today, an increase in demand by
consumers is witnessed towards consuming goat milk, mainly owed to their rich nutraceutical
value. In this study, novel goat milk bar was developed by incorporating rose flower extracts
as an added ingredient (concentration level: 0, 5, 10, 15 and 20%), and by using two different
types of natural sweeteners (cane sugar and palm sugar). The nutrition bars were evaluated
for proximate composition, texture properties and sensory qualities. Results obtained were
encouraging and the new goat milk based nutritional bar formulation with added rose extracts
certainly paves way for future commercial exploitation of the product. Goat milk, owing to its
rich nutraceutical value, and rose extracts owing to the dual functions of a natural antioxidant
and antimicrobial agent, can be beneficial for extending the shelf life of this novel product
under room or refrigerated temperatures, thus attracting better markets.