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Title: Enzymatic synthesis of 1-caffeoylglycerol with deep eutectic solvent under continuous microflow conditions

Journal Article · · Biochemical Engineering Journal
 [1];  [1];  [2];  [3];  [2];  [1];  [4];  [2]
  1. Jiangsu Univ. of Science and Technology, Zhenjiang (China)
  2. Jiangsu Univ. of Science and Technology, Zhenjiang (China); Chinese Academy of Agricultural Sciences, Zhenjiang (China). Sericultural Research Inst.
  3. National Renewable Energy Lab. (NREL), Golden, CO (United States)
  4. Nantong Yuanshengtang Biological Science and Technology Co., LTD, Haian (China)

1-caffeoylglycerol (1-CG) is a hydrophilic ester with a high solubility, and has a strong activity to prevent skin cancer caused by ultraviolet. However, the current preparation process to synthesize 1-CG via transesterification from methyl caffeate (MC) and glycerin was not economic due to long reaction time or adding extra field. Therefore, an enzymatic synthesis with deep eutectic solvent chloride-urea (ChCl-urea) in a microreactor was firstly applied under continuous microflow condition to improve the productivity. A maximum 1-CG yield of 96.49% was obtained under the optimized conditions: temperature of 65 degrees C, flow rate of 2 $$μ$$L/min, MC concentration of 50 g/L. Compared to the batch reactor, the reaction time reduced by 75%, the $$K_m$$ value decreased by 5/6, the reuse times of lipase increased by 2.29-fold, the external mass and transfer coefficients increased 10 times, which process was verified by numerical simulation. In addition, the produced 1-CG of 2 mg/mL has a high UV damage remediation ability of 75.16% using HaCaT cell model, which reveals 1-CG can repair the damage of cells radiated by the UV. Thus, this approach represents a convenient and cost-saving method to produce 1-CG using microfuidic biocatalysis.

Research Organization:
National Renewable Energy Laboratory (NREL), Golden, CO (United States)
Sponsoring Organization:
USDOE Office of Energy Efficiency and Renewable Energy (EERE)
Grant/Contract Number:
AC36-08GO28308
OSTI ID:
1485770
Report Number(s):
NREL/JA-5100-72937
Journal Information:
Biochemical Engineering Journal, Journal Name: Biochemical Engineering Journal Journal Issue: C Vol. 142; ISSN 1369-703X
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English

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Cited By (4)

The Promises and the Challenges of Biotransformations in Microflow journal May 2019
Continuous Biocatalysis in Environmentally‐Friendly Media: A Triple Synergy for Future Sustainable Processes journal June 2019
Deep eutectic solvents for biocatalytic transformations: focused lipase-catalyzed organic reactions journal January 2020
A chemo-enzymatic tandem reaction in a mixture of deep eutectic solvent and water in continuous flow journal January 2020