Page 118 - 《精细化工》2022年第6期
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第 39 卷第 6 期                             精   细   化   工                                  Vol.39, No.6
             2022 年 6 月                              FINE CHEMICALS                                 June  2022


              生物工程
                    两相体系中生物转化肉桂醇生成天然 2-苯乙醇



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                       黄秋容 ,粟桂娇 ,梁   敏 ,赖   芳 ,刘雄民 ,马   丽
                 (1.  广西大学  化学化工学院,广西  南宁  530005;2.  广西大学  生命科学与技术学院,广西  南宁
                 530005)
                 摘要:利用肉桂内生菌鞘氨醇单胞菌 Sphingomonas  sp. Z45 生物转化肉桂醇合成天然 2-苯乙醇。为了提高肉桂
                 醇的转化率和产物 2-苯乙醇的质量浓度,探究了在油相(有机溶剂)/水相(发酵培养基)两相体系中进行生物
                 转化的工艺。结果表明,在筛选的 6 种有机溶剂中,油酸作为构建两相体系的有机相,在 10 mL 发酵培养基中,
                 加入 1 mL 种子液培养 24 h 后,同时加入底物肉桂醇 3 g/L,油酸 10 mL,在 30  ℃、转速为 200 r/min 的摇床中
                 反应 12 h,在该条件下肉桂醇转化率达 88.0%,2-苯乙醇质量浓度为 2.64 g/L。与单水相体系同等条件下(底物
                 肉桂醇加入量 3 g/L)的转化结果相比较,肉桂醇转化率提高了 41.2%,2-苯乙醇质量浓度提高了 1.43 g/L。
                 关键词:肉桂醇;天然 2-苯乙醇;两相体系;鞘氨醇单胞菌;生物转化;生物工程
                 中图分类号:TQ243.4      文献标识码:A      文章编号:1003-5214 (2022) 06-1184-06


                              Biotransformation of cinnamyl alcohol into natural

                                       2-phenylethanol in two-phase system


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                       HUANG Qiurong , SU Guijiao , LIANG Min , LAI Fang , LIU Xiongmin , MA Li
                 (1. College of Chemistry and Chemical Engineering, Guangxi University, Nanning 530005, Guangxi, China; 2. College
                 of Life Sciences and Technology, Guangxi University, Nanning 530005, Guangxi, China)
                 Abstract:  Natural 2-phenylethanol was synthesized by  biotransformation  of cinnamyl alcohol with an
                 endophytic strain  Sphingomonas sp. Z45  from cinnamon. To improve the conversion  rate of cinnamyl
                 alcohol and the mass concentration  of  2-phenylethanol, the  biotransformation conditions in organic
                 solvent/water two-phase system were investigated. The results showed that oleic acid was the best organic
                 phase for the two-phase system among 6 kinds organic solvents. When 1 mL seed liquid was inoculated in
                 10 mL fermentation medium and cultured for 24 h, subsequently, 10 mL oleic acid and 3 g/L cinnamyl
                 alcohol were added, and then the reaction was performed at 30  ℃  and 200 r/min for 12 h, the conversion
                 rate of cinnamyl alcohol reached 88.0%, and the final mass concentration of 2-phenylethyl alcohol was
                 2.64 g/L. Compared with those of the mono-aqueous system reaction under the same conditions (additive
                 amount of cinnamyl alcohol of 3 g/L), the conversion rate of cinnamyl alcohol and the mass concentration
                 of 2-phenylethanol were increased by 41.2% and 1.43 g/L, respectively.
                 Key words: cinnamyl alcohol; natural 2-phenylethanol; two-phase system; Sphingomonas; biotransformation;
                 biological engineering


                 2-苯乙醇(2-PE)因其具有怡人玫瑰香味而被                       化学合成品,但因资源限制,产量不能满足市场需求
            广泛应用于食品、化妆品、香水等行业,目前主要                             [2] 。微生物转化所得的香精香料可视为“天然品”,
                                       [2]
                         [1]
            通过化学合成 和植物源提取 两种方式获取。从植                            是一种极具经济性且可替代传统的植物源获取天然
                                                                                 [3]
            物细胞中提取获得的 2-PE 天然属性附加值远高于                          香精香料的生产方式 。目前,生物合成天然 2-PE

                 收稿日期:2021-11-23;  定用日期:2022-01-25; DOI: 10.13550/j.jxhg.20211195
                 基金项目:国家自然科学基金资助项目(21502027);广西自然科学基金资助项目(2016GXNFAA380304)
                 作者简介:黄秋容(1992—),女,硕士生,E-mail:hqr459@126.com。联系人:马丽(1971—),女,高级工程师,硕士生导师,E-mail:
                 gxumali@126.com。
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