Grapes

ZHANG Peng; YUAN Xing-ling; WANG Li-qiang; SUN Xue-liang; ZHANG He; MA Shu-feng; LI Jiang-kuo

doi:10.19554/j.cnki.1001-3563.2021.07.003

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Packaging Engineering ›› 2021 ›› Issue (7) : 19-27. DOI: 10.19554/j.cnki.1001-3563.2021.07.003

Grapes

ZHANG Peng¹, ZHANG He¹, LI Jiang-kuo¹, YUAN Xing-ling², WANG Li-qiang³, MA Shu-feng³, SUN Xue-liang⁴

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Abstract

By the comparison between the effects of preharvest and postharvest 1-MCP treatments on the shelf quality of Sunshine Muscat grapes, a better 1-MCP treatment method was obtained. The Sunshine Muscat grapes were treated with 1 μL/L 1-MCP preharvest spraying and postharvest fumigation treatments, and then subjected to 6-day room temperature shelf experiment after treatment. Weight loss rate, solid-to-acid ratio, Vitamin C(Vc) content, respiratory intensity, ethylene release rate, hardness and aroma components are evaluation indicators to obtain the best treatment method of 1-MCP through principal component analysis. The results showed that the sensory score of grapes treated with 1-MCP was over ten points higher than that of the CK group. In addition, after grapes were treated with 1-MCP, the loss of nutrients such as water and VC was slower, the respiratory intensity and ethylene release rate were lower, and the firmness was higher. And in the late shelf life, the relative content of esters and other beneficial aroma components in grapes differed significantly. The relative content of CK group, preharvest 1-MCP group, and postharvest 1-MCP group were 0.09%, 8.25% and 39.39% on 6th day of shelf life. After principal component analysis, the three groups of grapes were ranked as postharvest 1-MCP group>preharvest 1-MCP group>CK group. In short, 1-MCP treatment can effectively maintain the shelf quality of “Sunshine Muscat” grapes, and the shelf quality of the 1-MCP treatment group after harvest is better than that of the preharvest treatment group, indicating that 1-MCP is suitable for postharvest treatment in the shelf preservation of Sunshine Muscat grapes.

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ZHANG Peng, YUAN Xing-ling, WANG Li-qiang, SUN Xue-liang, ZHANG He, MA Shu-feng, LI Jiang-kuo. Grapes[J]. Packaging Engineering. 2021(7): 19-27 https://doi.org/10.19554/j.cnki.1001-3563.2021.07.003