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KMID : 0545120020120010162
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Journal of Microbiology and Biotechnology
2002 Volume.12 No. 1 p.162 ~ p.165
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Screening of Thermotolerant Yeast for Use as Microbial Feed Additive
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LEE, JAE-HEUNG
LIM, YOO-BEOM/KOH, JONG-HO/BAIG, SOON-YONG/SHIN, HYUNG-TAI
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Abstract
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With the objective of identifying the commercial potential of new direct-fed microbials, several temperature-tolerant strains were isolated from cane molasses at 39℃ and tested for their tolerance to pH, bile salts, and a mixture of volatile fatty acids (acetic acid:propionic acid:butyric acid=6.5:2.0:1.5). It was found that the isolated strain DY 252 grew very well up to pH 2.0 and was resistant to relatively high concentrations of bile salts. Among the strains tested, DY 252 was least inhibited by the addition of volatile fatty acids to the growth medium at 39℃. Accordingly, it would appear that strain DY 252, identified as yeast Issatchenkia orientalis, may be a potential candidate for use as a microbial feed additive.
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