๐”– Bobbio Scriptorium
โœฆ   LIBER   โœฆ

Effect of osmotic shock on osmotolerant yeasts

โœ Scribed by Bhajekar, Deepa ;Kulkarni, P. R.

Publisher
John Wiley and Sons
Year
1991
Tongue
English
Weight
268 KB
Volume
35
Category
Article
ISSN
0027-769X

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โœฆ Synopsis

Shock exposure of osmotolerant yeasts Debaryomyces hansenii 3339, Zygosaccharomyces mellis 3296 and Kloeckera anfilarrum 3046 to solutions of sucrose at water activity (Aw) values between 0.99 and 0.88 was found to cause a great decrease in cell volume but an increase in heat resistance. For Debaryomyces hansenii the cell volume decreased from 28 pm3 to 4 pm3 and it could withstand a temperature of 6 5 T for over 20 min. Zygosaccharomyces mellis and Kloeckera anfilarrum showed a decrease in cell volume from 31 pm3 to 3 pm3 and 4 pm3 respectively and both survived a heat treatment of 75 "C for over 30 min.

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