Title : ( Effect of thermo-ultrasonication on the survival of baker’s yeast )
Authors: farshid nickfar , Farideh Tabatabaei yazdi , Mohammad Elahi , Sayed Ali Mortazavi , M. Karimi ,
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Abstract
The combined effect of low frequency ultrasound (20 kHz, with waves of amplitude 20 and 40) with temperature (45oC for periods of 5 and 10 min) on the survival of a baker’s yeast suspended in water was studied. Irradiation was conducted for periods of 2–10 min. Colony counting analyses in Sabouraud agar media were performed for comparison. Application of ultrasonic waves at a non-lethal temperature (45oC) did not display a deactivating action to initial 4min irradiation time and higher CFU/gr values at higher heating time was observed. These results proved that the ultrasonic waves do not destroy the yeast s cells especially in initial 4min ultrasonication, but the consequence also showed the resistance of cells decreased as ultrasonic amplitude and irradiation time increasing.
Keywords
, : Baker’s yeast; Thermo, ultrasonication; Colony counting; Amplitude; Temperature
@article{paperid:1018274,
author = {Nickfar, Farshid and Tabatabaei Yazdi, Farideh and Elahi, Mohammad and Mortazavi, Sayed Ali and M. Karimi},
title = {Effect of thermo-ultrasonication on the survival of baker’s yeast},
journal = {American-Eurasian Journal of Agricultural & Environmental Science},
year = {2010},
volume = {8},
number = {6},
month = {August},
issn = {1818-6769},
pages = {656--661},
numpages = {5},
keywords = {: Baker’s yeast; Thermo-ultrasonication; Colony counting; Amplitude; Temperature},
}
%0 Journal Article
%T Effect of thermo-ultrasonication on the survival of baker’s yeast
%A Nickfar, Farshid
%A Tabatabaei Yazdi, Farideh
%A Elahi, Mohammad
%A Mortazavi, Sayed Ali
%A M. Karimi
%J American-Eurasian Journal of Agricultural & Environmental Science
%@ 1818-6769
%D 2010
