Food and Fermentation Industries >

2026 , Vol. 52 >Issue 15: 356 - 364

DOI: https://doi.org/10.13995/j.cnki.11-1802/ts.044438

Preparation of Cornus officinalis polysaccharide-chitosan composite film and its application in red grapes preservation

  • GENG Qinglin ,
  • BI Baoxue ,
  • XUE Shujuan ,
  • CUI Yongxia ,
  • WANG Lili ,
  • CHENG Junru ,
  • MA Xiaodong
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  • 1(College of Pharmacy, Henan University of Chinese Medicine, Zhengzhou 450046,China)
    2(Collaborative Innovation Center of Research and Development on the whole Industry Chain of Yu-Yao, Henan University of Chinese Medicine, Zhengzhou 450046,China)
    3(Henan Gaiyan Modern Chinese Medicine Technology Co.Ltd.,Zhengzhou 450046,China)

Received date: 2025-09-05

  Revised date: 2025-12-18

  Online published: 2026-08-20

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Abstract

Composite films were prepared using Cornus officinalis polysaccharide (COP) and chitosan as the matrix, and its preservation performance was experimentally investigated.Firstly, polysaccharide extraction of COP was carried out by the aqueous alcoholic precipitation method, polysaccharide deproteinization by the Sevag method (chloroform∶n-butanol), decolorization by macroporous adsorbent resin, and removal of small molecules by dialysis bag.Secondly, five types of COP-CS composite films were prepared using the casting method, with COP as the active component and chitosan (CS) as the film-forming matrix.The study of the physicochemical properties of the membrane agents showed that the composite membranes possessed better mechanical properties and water vapor permeability, as well as better oil-blocking properties, compared with the CS and COP membranes as single membranes.Finally, the membrane structure of the composite membrane was observed by scanning electron microscopy, and it was found that the membrane structure of the COP-CS composite, COP∶CS(1∶1), membrane was more compact.Using red grape for preservation experiments, it was found that the composite film of COP and CS could effectively extend the preservation time of red grapes, laying the foundation for the industrial production of COP composite film preparation in the future.

Key words： Cornus officinalis polysaccharide; chitosan; composite membrane; freshness preservation

Cite this article

GENG Qinglin , BI Baoxue , XUE Shujuan , CUI Yongxia , WANG Lili , CHENG Junru , MA Xiaodong . Preparation of Cornus officinalis polysaccharide-chitosan composite film and its application in red grapes preservation[J]. Food and Fermentation Industries, 2026 , 52(15) : 356 -364 . DOI: 10.13995/j.cnki.11-1802/ts.044438

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