Food and Fermentation Industries >

2024 , Vol. 50 >Issue 16: 265 - 270

DOI: https://doi.org/10.13995/j.cnki.11-1802/ts.038914

Composition and antioxidant activities of polysaccharide-phenol conjugates from Pericarpium Citri Reticulatae with different storage years

  • TIAN Changcheng ,
  • LI Jing ,
  • TAO Zhijie ,
  • ZHAO Daqing
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  • 1(College of Food and Bioengineering, Bengbu University, Bengbu 233030, China)
    2(College of Life Science, Bengbu Medical University, Bengbu 233030, China)

Received date: 2024-02-20

  Revised date: 2024-04-22

  Online published: 2024-09-19

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Abstract

Pericarpium Citri Reticulatae is a traditional homologous substance of medicine and food, which has been widely used in the food and traditional Chinese medicine industry.The traditional view considers that the longer the storage of Pericarpium Citri Reticulatae, the higher its nutritional value, but the mechanism is unclear.This study focused on the composition and antioxidant activity of polysaccharide-phenol conjugates (PPC) from 1-year, 5-year, and 10-year Pericarpium Citri Reticulatae, to elucidate the relationship between storage years and activity of Pericarpium Citri Reticulatae.The surface structure of PPC was observed by scanning electron microscope, and the contents of phenolic substances in PPC were analyzed by alkaline hydrolysis extraction and HPLC.Results showed that PPC-1 contained more free phenols, and its surface was smooth, while PPC-5 and PPC-10 contained more soluble and insoluble bound phenols, and their surfaces showed a hollow network structure.The results of in vitro antioxidant experiments showed that PPC-5 and PPC-10 could effectively scavenge DPPH free radicals, inhibit lipid peroxidation, and inhibit DNA damage caused by free radicals.With the extension of storage years, the non-covalent conjugated phenols in the Pericarpium Citri Reticulatae will gradually and covalently bind to the polysaccharide, and the formed polysaccharide-phenol conjugates will maintain stronger antioxidant activity, enhancing the nutritional efficacy of Pericarpium Citri Reticulatae.

Key words： Pericarpium Citri Reticulatae; polysaccharide; antioxidant activity; DNA damage; phenols

Cite this article

TIAN Changcheng , LI Jing , TAO Zhijie , ZHAO Daqing . Composition and antioxidant activities of polysaccharide-phenol conjugates from Pericarpium Citri Reticulatae with different storage years[J]. Food and Fermentation Industries, 2024 , 50(16) : 265 -270 . DOI: 10.13995/j.cnki.11-1802/ts.038914

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