Evaluation of different clarifiers for in vitro adsorption of ochratoxin A in wine

  • SHI Miao ,
  • GAO Chenyu ,
  • DONG Rong ,
  • LI Feifei ,
  • QIAO Dan ,
  • LIU Mingchen ,
  • XUE Feng ,
  • WEI Dengpan ,
  • ZHANG Zhenzhen
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  • 1(College of Food Science and Pharmacy, Xinjiang Agricultural University, Urumqi 830052, China)
    2(Turpan Loulan Chateau Co.Ltd., Shanshan 838299, China)

Received date: 2023-10-12

  Revised date: 2023-12-12

  Online published: 2024-10-29

Abstract

The dry red wine ‘Cabernet Sauvignon' was used as the research object to analyze the effects of different concentrations of chitosan, gelatin, and saponin treatments on the adsorption effect of ochratoxin A (OTA) in wine and the quality of wine.High-performance liquid chromatography (HPLC) was used to analyze OTA in wine samples.The results showed that for an initial concentration of 3.3 μg/L OTA, a 48-hour treatment with 1 g/L chitosan could achieve a 75.87% adsorption rate.Compared with gelatin and saponin at the same concentration, the adsorption rate of OTA increased by 11.27% and 21.02% with chitosan, respectively.Additionally, the adsorption rate of OTA increased with an increase in the concentration of the clarifying agent.In terms of the effects of different clarifiers on wine quality, the smallest loss of polyphenols occurred in the 0.6 g/L chitosan treatment.This treatment resulted in a 15.78% loss of total phenols, a 13.48% loss of total anthocyanosides, and a -11.41% loss of tannins, with the wine's transmittance reaching 78.02%.The 1.0 g/L chitosan treatment followed closely with similar effects.Considering the highest adsorption rate of OTA by the clarifier and the minimal influence on wine quality, the optimal treatment for OTA adsorption in wine was determined to be 1.0 g/L chitosan.Under this treatment, the adsorption rate of OTA reached 75.87% and the transmittance rate was 78.22%, providing technical support for the selection of a suitable OTA adsorbent.

Cite this article

SHI Miao , GAO Chenyu , DONG Rong , LI Feifei , QIAO Dan , LIU Mingchen , XUE Feng , WEI Dengpan , ZHANG Zhenzhen . Evaluation of different clarifiers for in vitro adsorption of ochratoxin A in wine[J]. Food and Fermentation Industries, 2024 , 50(19) : 135 -141 . DOI: 10.13995/j.cnki.11-1802/ts.037635

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