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KMID : 0379119940220010008
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Korean Journal of Mycology
1994 Volume.22 No. 1 p.8 ~ p.30
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Effects of Carbohydrates on the Biosynthesis of Phospholipids and Fatty Acid Composition in Aspergillus , Rhizopus and Candida Cells
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Abstract
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The synthesis of phospholipids and the composition of fatty acids were analyzed in the fungal cells of Aspergillus phoenicis, Rhizopus acidus and Candida albicans treated with carbon sources (glucose, sucrose, raffinose) during the culture. Growth ratios were predominantly in Aspergillus and Candida treated with sucrose and those in Rhizopus treated with glucose. The synthesis of total lipids were accelerated in Aspergillus and Rhiwpus with glucose and the contents of total lipid was increased in Candida with raflinose. The glucose treatment increased Phosphatidylinositol (PI) content by 73.7% for Aspergillus and Phosphatidylcholine(PC) content by 292% for Rhizopus. In sucrose treatment, the synthesis of PI was accelerated 112% for Aspergillus and that of PC was increased 77.7% for Rhizopus and 71.8% for Candida. In raffinose treatment, the content of PC was increased 79.5% for Aspergillus, the biosynthesis of Phosphatidylethanolamine(PE) was inhanced 50.9% for Rhimpus and 49.1% for Candida. In Aspergillus and Candida, oleic acid and linoleic acid were major fatty acids for biosynthesis of PC and PE when the three carbon sources were treated. The major fatty adds for biosynthesis of phospholipid was palmitic acid and linoleic acid in Aspergillus, pahnitic acid in Rhizopus and oleic acid in Candida. Palmitic acid was one of major fatty acids utilized for the biosynthesis of phospholipid(PC, PE, PI) in the fungal cells treated with carbohydrates.
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KEYWORD
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