發明
美國
15/135,317
US 9,970,035
METHODS FOR PRODUCING BIODIESEL BY RECOMBINANT LIPASE
國立臺灣師範大學
2018/05/15
本發明提供一種生產生質柴油的方法,包括提供重組皺褶假絲酵母菌脂肪酶;使該重組皺褶假絲酵母菌脂肪酶與非食用油反應;以及從經反應之溶液中分離出該生質柴油。Candida rugosa 脂肪酶(CRL)是一種用途極為廣泛的市售酵素,但至今尚未有利用它對非食用性油脂進行轉酯化,成功生產出生質柴油的報導。本發明利用 P. pastoris 表達的四種重組同功酶 (CRL1-CRL4),針對非食用油進行轉酯化生產生質柴油的研究。結果顯示 CRL2 及 CRL4 對於痲瘋樹籽油轉酯化生產脂肪酸甲酯 (FAME) 有較好的催化效果。CRL2 於最適反應條件下 (50 wt% 水,初始添加1當量甲醇,24小時再追加 0.5 當量甲醇,於 37℃ 下總共反應 48 小時) 可達到95.3%的轉化率。此結果證實,選擇適當的C. rugosa同功酶可做為轉化低價痲瘋樹籽油為生質柴油的良好生物觸媒。 The present invention provides a method for producing biodiesel, comprising providing a recombinant Candida rugosa lipase (CRL); reacting the recombinant Candida rugosa lipase with non-edible oils; and isolating the biodiesel from the reacted solution. In the present invention, four liquid recombinant CRL isozymes (CRL1-CRL4) were investigated to convert various non-edible oils into biodiesel. The results showed that recombinant CRL2 and CRL4 exhibited superior catalytic efficiencies for producing fatty acid methyl ester (FAME) from Jatropha curcas seed oil. A maximum 95.3% FAME yield was achieved using CRL2 under the optimal conditions (50 wt% water, an initial 1 equivalent of methanol feeding, and an additional 0.5 equivalents of methanol feeding at 24 h for a total reaction time of 48 h at 37 °C). We concluded that specific recombinant CRL isozymes could be excellent biocatalysts for the biodiesel production from low-cost crude Jatropha oil.
產學合作組
77341329
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