Food and Fermentation Industries >

2013 , Vol. 39 >Issue 12: 62 - 67

DOI: https://doi.org/10.13995/j.cnki.11-1802/ts.2013.12.041

Food and Fermentation Industries

Breaking of brewer yeast with repeated freezing and thawing combined with ultrasound treatment

  • YUAN Hua-ning ,
  • HUANG Dong-yun ,
  • ZHANG Hui ,
  • QIAN Hai-feng ,
  • WANG Li ,
  • QI Xi-guang
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Online published: 2013-12-25

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Abstract

Combined treatment with repeated freezing and thawing and ultrasound was used to break the brewer yeast cell walls and their synergistic effect on the broken ratio of yeast cell wall was investigated. The experiment was carried out with repeated freezing and thawing( water content of 25%,freezing and thawing 4 times) treatment followed by ultrasound( 400W,duration of irradiation each time 11 s,14. 5min,yeast concentration 20 mg / mL) treatment. The results showed that the broken ratio of brewer yeast cell walls reached 89. 31%,which was 2. 4 times of that only using the repeated freezing and thawing,and 1. 5 times of that only using ultrasound.

Key words： beer yeast; repeated freezing and thawing; ultrasound; breakage ratio

Cite this article

YUAN Hua-ning , HUANG Dong-yun , ZHANG Hui , QIAN Hai-feng , WANG Li , QI Xi-guang . Breaking of brewer yeast with repeated freezing and thawing combined with ultrasound treatment[J]. Food and Fermentation Industries, 2013 , 39(12) : 62 -67 . DOI: 10.13995/j.cnki.11-1802/ts.2013.12.041

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