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Production of l-α-Glycerylphosphorylcholine from Oil Refining Waste Using a Novel Cold-Active Phospholipase B from Bacillus velezensis
ACS Sustainable Chemistry & Engineering ( IF 7.1 ) Pub Date : 2021-09-20 , DOI: 10.1021/acssuschemeng.1c04767
Longgang Jia 1, 2 , Chen Wang 1 , Yifan Wu 1 , Xiangyang Ma 1 , Xue Zhang 1 , Xiuxiu Chu 1 , Fuping Lu 1 , Yihan Liu 1
Affiliation  

l-Alpha-glycerylphosphorylcholine (GPC) is extensively utilized in food, cosmetic, medical, and pharmaceutical industries. GPC preparation using an enzymatic method has been explored recently for the lack of natural resources. This work intended to establish an efficient process for producing GPC by extracting phosphatidylcholine (PC) from oil refining waste. A whole-cell biocatalyst for GPC synthesis via hydrolyzing PC was engineered by displaying a cold-adapted phospholipase B gene (plbbv) from Bacillus velezensis on the cell surface of Pichia pastoris GS115 (dPLBbv). Free PLBbv exhibited the maximum activity at pH 8.0 and 20 °C, and dPLBbv showed the same optimal temperature and pH with significant improvement in stability. GPC yield was 92.7% at 20 °C, and the relative yield retained over 60% after seven repeated catalysis using dPLBbv. This study offered a low-cost method for highly producing GPC from food processing waste.

中文翻译:

使用新型冷活性磷脂酶 B 从石油精炼废物中生产 l-α-甘油基磷酰胆碱

l -α-甘油基磷酰胆碱 (GPC) 广泛用于食品、化妆品、医疗和制药行业。由于缺乏自然资源,最近已经探索了使用酶法制备 GPC。这项工作旨在建立一种通过从炼油废物中提取磷脂酰胆碱 (PC) 来生产 GPC 的有效工艺。通过在毕赤酵母GS115 (dPLB bv )的细胞表面上展示来自贝莱兹芽孢杆菌的冷适应磷脂酶 B 基因 ( plb bv ),设计了一种通过水解 PC 合成 GPC 的全细胞生物催化剂。游离 PLB bv在 pH 8.0 和 20 °C 时表现出最大活性,而 dPLB bv显示出相同的最佳温度和 pH 值,稳定性显着提高。GPC 产率在 20 °C 时为 92.7%,在使用 dPLB bv重复催化 7 次后,相对产率保持在 60% 以上。这项研究提供了一种从食品加工废物中高产 GPC 的低成本方法。
更新日期:2021-10-04
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