响应面法优化微生物萃取转化制备L-苯基乙酰基甲醇的工艺
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篇名: | 响应面法优化微生物萃取转化制备L-苯基乙酰基甲醇的工艺 |
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摘要: | 目的:优化微生物萃取转化制备L-苯基乙酰基甲醇(L-PAC)的条件。方法:以啤酒酵母萃取制备L-PAC。采用高效液相色谱法测定L-PAC浓度。以L-PAC浓度为响应值,通过Box-Behnken响应面法对苯甲醛、曲拉通(Triton)X-100和葡萄糖用量这3个主要因素进行考察,同时进行验证试验。结果:苯甲醛和Triton X-100之间的交互作用最为显著,最优因素组合为苯甲醛1.1%、Triton X-100 0.14 g/mL、葡萄糖0.028 g/mL;验证试验中L-PAC的平均浓度为28.04 mmol/L(RSD=1.35%,n=3),与预测值28.01 mmol/L的相对误差为0.11%。 结论:利用响应面法对微生物萃取转化制备L-PAC的条件进行了优化,得到了各因素的最优组合,可为大批量转化制备L-PAC提供有利参考。 |
ABSTRACT: | OBJECTIVE: To optimize the conditions of extractive microbial transformation for producing L-phenylacetylcarbinol (L-PAC). METHODS: HPLC was used to determine the concentration of L-PAC, which was extracted by saccharmyces cerevisiae. Using L-PAC concentration as response value, Box-Behnken response surface design was adopted to investigate the 3 main factors of benzaldehyde, Triton X-100 and glucose dose, and verification test was conducted. RESULTS: The interaction between benzaldehyde and Triton X-100 was the most significant. The optimized combination was as follows as benzaldehyde of 1.1%, Triton X-100 of 0.14 g/mL, glucose of 0.028 g/mL. The average concentration in verification test of L-PAC was 28.04 mmol/L (RSD=1.35%, n=3), showing 0.11% relative error with the predicted value of 28.01 mmol/L. CONCLUSIONS: Response surface method has optimized the conditions of extractive microbial transformation for producing L-PAC, obtained optimal combination of each factor, and provided favorable reference for volume-producing L-PAC. |
期刊: | 2017年第28卷第19期 |
作者: | 薛迎迎 |
AUTHORS: | XUE Yingying |
关键字: | 响应面法;微生物萃取转化;L-苯基乙酰基甲醇 |
KEYWORDS: | Response surface method; Extractive microbial transformation; L-phenylacetylcarbinol |
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