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KMID : 0366119740020030149
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Korean Journal of Applied Microbiology & Bioengineering
1974 Volume.2 No. 3 p.149 ~ p.154
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Biomass Production of Yeasts from Gas Oil (Ⅰ)
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Abstract
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In the course of the studies on yeasts utilizing petroleum hydrocarbon, 227 strains of such yeasts were isolated from 78 kinds of soil samples.
Out of them, four (4) strains having the cell yield in excess of 2.0g. /liter on dried cell basis were selected in the growing stage of yeast in four kinds of basic media containing kerosene of commercial grade, raw kerosene, raw light gas oil and raw heavy gas oil in sha king flasks at 30℃.
All of the isolated yeasts were less capable to assimilate kerosenes than gas oils, and theseleeted four yeasts had the following characteristics.
Strain No.Specific Growth Rate Content of Crude Protein
PY-199 0.210hr^(-1) 56.8%
PY-244 0.224hr^(-1) 53.6%
PY-307 0.210hr^(-1) 56.3%
PY-133 0.198hr^(-1) 45.4%
It was found in production of yeast cells from gas oils that raw light gas oil was more favorable to the Strain PY-199 than raw heavy gas oil and, on the contray, raw heavy gas oil was more favorable to the Strain PY-244 than raw light gas oil.
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