O-502 ラビリンチュラ類の高度不飽和脂肪酸およびキサンフィル類脂質生産における廃棄シロップの有効利用法(セッション5:導入)

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In the food industry, the syrup containing a high concentration of sugar used for fruits storage is abundantly discharged as a food processing waste, and almost disposed by incineration. It results in the rise of the manufacturing cost and environmental pollution. This study demonstrates that waste syrup is utilized as carbon source for production of docosahexaenoic acid (DHA) and astaxanthin (Asx) by thraustochytrid, Aurantiochytrium sp. strain KH105. KH105 could be grown in the culture medium containing 3-50% waste syrup, and the maximum yields of DHA and Asx were obtained at 207.6 mg/L and 1.1 mg/L. When the culture medium condition was optimized, DHA and Asx yields increased 2.1 and 1.5 times, respectively, as much as in the standard culture condition. When the waste syrup treated with activated carbon was used, Asx yield increased 2.3 times with reduction of the citrate concentration in waste syrup. This study shows that the functional lipid production by thraustochytrid is effective as the utilization of waste syrup.
2012-12-25