SO2 slow-release agent, preparation method thereof and application of SO2 slow-release agent in storage process of muscat grapes

By preparing and using a specific ratio of SO2 slow-release agent, the problem of unstable SO2 preservative release rate in existing technologies has been solved, achieving efficient preservation of Muscat grapes, maintaining the appearance and aroma quality of the fruit, and reducing the risk of fruit damage and residue.

CN121489009APending Publication Date: 2026-02-10ZHEJIANG LINGJIAN SHUZHI TECH CO LTD +2
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Patent Information

Application Number
CN202511978885.7
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-12-25
Publication Date
2026-02-10

AI Technical Summary

Technical Problem

Existing SO2 preservatives have an unstable release rate during grape storage, leading to fruit damage or poor anti-corrosion effects. They also have bleaching and residue problems, making it difficult to effectively maintain the post-harvest aroma and appearance quality of Muscat grapes.

Method used

A slow-release SO2 agent composed of preservative A and preservative B in a mass ratio of 3:1, including sodium metabisulfite, silica gel, rosin, stearic acid, 2-aminobutane sulfate, and anhydrous sodium carbonate, was prepared by a specific mixing and packaging method and used in pre-storage treatment to control the SO2 release rate.

Benefits of technology

It significantly extended the shelf life of Muscat grapes, maintained the appearance and aroma of the fruit, reduced fruit damage and SO2 residue, and enhanced the application value of clean production.

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Abstract

The invention discloses an SO2 slow-release agent, a preparation method thereof and application of the SO2 slow-release agent in the storage process of muscat grapes, and belongs to the technical field of fruit preservation, a storage and preservation method of the muscat grapes comprises the following steps: S1, material collection: screening out muscat grape fruits with consistent maturity as materials; s2, treatment before storage: putting the cleaned and air-dried muscat grape fruits in a refrigeration house for pre-cooling, sub-packaging the muscat grape fruits in a microporous membrane after pre-cooling is completed, and adding a certain amount of the SO2 slow-release agent bag according to the claim 1; and S3, storage of the muscat grape fruits: putting the pretreated muscat grape fruits in a refrigeration house for refrigeration. Precooling and the SO2 slow-release agent are compounded to treat the muscat grapes for preservation, the preservation effect is good, the storage quality of the muscat grapes is improved, fragrance loss is delayed, the commercial value of the muscat grapes is kept, and the application prospect is good.
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