講演情報
[2A02]Characteristics of valuable fatty acids production by the novel strains of Auranthiochytrium sp.
○Tran Anh1、Nakai Satoshi1、Suenaga Toshikazu1、Nishijima Wataru2、Gotoh Takehiko 1 (1. Graduate School of Advanced Science and Engineering, Hiroshima University、2. Environmental Research and Management Center, Hiroshima University)
キーワード：
Aurantiochytrium sp.、Outside effect、fatty acids production
Aurantiochytrium sp. has received growing interest because of its high productivity of docosahexaenoic acid (DHA), eicosapentaenoic acid (EPA) for health benefits and palmitic acid (C16:0) for biodiesel production. Aurantiochytrium sp. strain 8W, 9LR, 10W, and 10LW were cultured in the 790 By+ medium under different temperatures at 10-35 oC, pH3-9, the salinity at 5-80 PSU. The strain 9LR was tested with dissolved oxygen (DO) at 1, 5, 8 mg/L. The temperature at 25 oC was optimal for the four strains' growth (p < 0.0487), DHA, EPA contents while the highest C16:0 accounted at 35 oC with p (strain 8W) < 0.0063. The salinity at 20-35 PSU showed the highest growth of four strains (p < 0.0480), the DHA, EPA contents were highest at 35 PSU. Strain 8W and 10LW produced the highest C16:0 (p < 0.0094) at 50–60 PSU environments. At pH5-8, four strains got the highest growth and DHA, EPA. DO at 5 mg/L was an optimal environment for biomass and DHA production of strain 9LR (p < 0.0004, p < 0.045, respectively) while DO at 8 mg/L showed the highest EPA value. The four strains grew at different outside conditions broadening the good potential DHA, EPA, and palmitic acid for industrial application.