Effects of Different Fatty Acids on Growth of Pleurotus sostreatus

Abstract

Abstract: The plate cultivation method was adopted to observe the effects of fatty acids with different saturations on the mycelial growth of activated strains 1012 of Pleurotu sostreatus in the present study. Results showed that saturated fatty acid and emulsifier(stearic monoglyceride plus stearic sucrose ester) can shorten the intermission of inoculum bourgeon,and the growth velocity of mycelium and their colonial morphologies are remarkably different in media containing fatty acid with different saturations. Unsaturated fatty acid can increase the amounts of branches of the mycelium to make the colony denser,namely promoting the mycelium growth vertically. The colony density decreases in the order of PUFA(polyunsaturated fatty acid) > MUFA(monounsaturated fatty acid) > SFA(saturated fatty acid) > CK(basal medium) . Polyunsaturated fatty acid also can accelerate the mycelium growth horizontally in compare with the other fatty acids,but no difference to the basal culture. The results confirmed that the components of fatty acid have great effects on the mycelium growth of edible fungi.

Key words: fatty acid, saturation, mycelium, Pleurotu sostreatus

LUO Jie, LIU Yu-Huan, GAO Long-Lan, JIAO Shuai, ZHOU Hou-De, RUAN Rong-Sheng. Effects of Different Fatty Acids on Growth of Pleurotus sostreatus[J]. FOOD SCIENCE, 2008, 29(8): 453-455.

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Effects of Different Fatty Acids on Growth of Pleurotus sostreatus

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