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  • microbial oil produced from biodiesel by-products could enhance overall production

    جزئیات بیشتر مقاله
    • تاریخ ارائه: 1390/01/01
    • تاریخ انتشار در تی پی بین: 1390/01/01
    • تعداد بازدید: 536
    • تعداد پرسش و پاسخ ها: 0
    • شماره تماس دبیرخانه رویداد: -
     glycerol and rapeseed meal, two major by-products of biodiesel production, have been tested for possible use as low-cost raw materials for the production of microbial bio-oil using the oleaginous yeast rhodosporidium toruloides. using fed-batch fermentation with crude glycerol and a novel nitrogen rich nutrient source derived from rapeseed meal as feed, it was shown that 13 g/l lipids could be produced, compared with 9.4 g/l when crude glycerol was used with yeast extract. when 100 g/l pure glycerol was used, the final lipid concentration was 19.7 g/l with the novel biomedium compared to 16.2 g/l for yeast extract. the novel biomedium also resulted in higher lipid yields (0.19 g lipid/g glycerol consumed compared to 0.12 g/l) suggesting it provides a better carbon to nitrogen balance for accumulating lipids. fames produced from the microbial lipids indicated a high degree of unsaturation confirming that the fatty acids produced from the novel biomedium have potential for biodiesel production.

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