Food and Fermentation Industries >

2024 , Vol. 50 >Issue 21: 273 - 279

DOI: https://doi.org/10.13995/j.cnki.11-1802/ts.037970

Photocatalytic degradation of ethylene by Fe-doped TiO2 and effect on postharvest ripening of cherry tomato

  • ZHANG Wenyu ,
  • ZHAO Minzi ,
  • ZENG Kaifang ,
  • RUAN Changqing
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  • 1(College of Food Science, Southwest University, Chongqing 400715, China)
    2(Chongqing Key Laboratory of Specialty Food Co-Built by Sichuan and Chongqing, Chongqing 400715, China)
    3(Research Center of Food Storage and Logistics, Southwest University, Chongqing 400715, China)

Received date: 2023-11-16

  Revised date: 2023-12-19

  Online published: 2024-11-28

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Abstract

Cherry tomato, a kind of climacteric fruit, is easily affected by ethylene after harvest to accelerate its respiration, thereby promoting ripening and seriously shortening its shelf life.Therefore, developing novel packaging materials and technology for removing ethylene from the postharvest environment of cherry tomatoes shows important practical significance in reducing the economic losses caused by ethylene-induced ripening of postharvest fruits.This study used a calcination method to prepare a kind of photocatalyst of Fe-doped titanium dioxide nanoparticle (Fe-TiO2) which might show photocatalytic activities under visible light irradiation.Compared with pure TiO2 nanoparticles, the band gap width of Fe-TiO2 decreased, the recombination rate of photogenerated electron-hole pairs decreased, and the ethylene degradation rate significantly increased under LED light irradiation.This study applied this technology of photocatalysis in the postharvest preservation of cherry tomatoes by detecting the variation of key indicators of fruit surface color to determine the postharvest ripening process and explored the effect of Fe-TiO2 loaded by polyvinyl alcohol (Fe-TiO2/PVA) and coated on fruit surface on cherry tomato postharvest ripening under LED light irradiation.The results showed that compared with the control group, the Fe-TiO2/PVA coating treatment could effectively control the changes in fruit color from green to red, delaying about 4 days, and delaying the postharvest ripening process of the fruit.This study preliminarily demonstrated the application prospect of photocatalytic.

Key words： Fe-doped titanium dioxide; photocatalyst; ethylene degradation; cherry tomato; ripening delaying

Cite this article

ZHANG Wenyu , ZHAO Minzi , ZENG Kaifang , RUAN Changqing . Photocatalytic degradation of ethylene by Fe-doped TiO2 and effect on postharvest ripening of cherry tomato[J]. Food and Fermentation Industries, 2024 , 50(21) : 273 -279 . DOI: 10.13995/j.cnki.11-1802/ts.037970

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