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Studies on the enzymatic synthesis and free radical scavenging ability of phenolic acid glycerols
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  • Hong Li,
  • Yanyan Li,
  • Xuezhi Yin,
  • Ziyi Li,
  • Huiling Mu,
  • Ruiling Shen,
  • Tao Wei
Hong Li
Zhengzhou University of Light Industry

Corresponding Author:2007025@email.zzuli.edu.cn

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Yanyan Li
Zhengzhou University of Light Industry
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Xuezhi Yin
Central China Publishing and Media Investment Holding Group Co Ltd
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Ziyi Li
Zhengzhou University of Light Industry
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Huiling Mu
University of Copenhagen Section for Geogenetics
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Ruiling Shen
Zhengzhou University of Light Industry
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Tao Wei
Zhengzhou University of Light Industry
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Abstract

The potentially wide application of Phenolic acids (PAs) in industries was severely limited by their inadequate solubility and stability in polar/non-polar media. To overcome these limits, studies on the enzymatic esterification of PAs with glycerol were carried out to reach a yield of 95% of phenolic acid glycerols (PAGs) under the following reaction conditions: 1:150 molar ratio of caffeic acid (CA) to glycerol; 25% of Lipozyme 435 relative to the weight of total substrates; temperature 80 oC, 500 rpm; 86.7 kPa and reaction time 10 h. Three resulting PAGs including caffeoyl glycerol (CG), feruloyl glycerol (FG) and p-hydroxycinnamoyl glycerol ( p-HCG) were confirmed by MS, 1H NMR and 13C NMR. Among them, CG showed a comparative free radical scavenging ability to CA, indicating its potential use as a water-soluble antioxidant alternative to CA for food and cosmetic applications. Moreover, the direct esterification of PAs with glycerol decrease the product cost and increase the feasibility of industrial production compared with the previous transesterification sythesis methods of PAGs.
16 Oct 2023Submitted to Journal of the American Oil Chemists' Society
16 Oct 2023Submission Checks Completed
16 Oct 2023Assigned to Editor
16 Oct 2023Review(s) Completed, Editorial Evaluation Pending
17 Oct 2023Reviewer(s) Assigned