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KMID : 0380619700020020061
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Korean Journal of Food Science and Technology
1970 Volume.2 No. 2 p.61 ~ p.67
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Production of Single - Cell Protein on Petroleum Hydrocarbon
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권태완/Kwon, Tai Wan
변유량/민태익/박융/Pyun, Yoo Ryang/Mheen, Tae Ick/Park, Yoong
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Abstract
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The growth characteristics of Candida tropicalis KIST 359, isolated from soil samples collected at an oil depot in Korea, have been studied by cultivating batches under varying conditions. The conclusions of the study were:
1. The yeast easily assimilates hydrocarbons in a range of C_(14)-C_(17), and the optimum cultivation temperature and pH are 30℃ and 5.5, respectively.
2. Using this strain of micro-organism, gas oil gives a higher cell yield than kerosine and with gas oil except urea all other nitrogen sources (NH₄NO₃, NH₄Cl, (NH₄)₂SO₄ and (NH₄)₂HPO₄) similarly support a satisfactory growth of the yeast.
3. The highest yield is obtained with a gas oil level of 10%(v/v), and concentrations of nitrogen source and MgSO₄-7H₂O of 0.5 and 0.05%(w/v), respectively.
4. The protein content of dried yeast cells is 59.8%. Its amino acid composition can be compared well with that of FAO provisional patterns, but with a low methionine and a high lysine content.
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