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Automatic periodical SO2 fumigation improves the storage quality of tender ginger

文献类型： 外文期刊

作者： Jia, Xiaoyu 1 ; Du, Meijun 4 ; Zheng, Yanli 4 ; Chen, Lan 4 ; Song, Jianxin 4 ; Tang, Xianpu 4 ; Liu, Haidong 3 ; Li, Jia 1 ;

作者机构： 1.Tianjin Acad Agr Sci, Inst Agr Prod Preservat & Proc Technol, Tianjin 300192, Peoples R China

2.Res Ctr Preservat Agr Prod, Tianjin Key Lab Postharvest Physiol & Storage Agr, Natl Engn & Technol, Tianjin, Peoples R China

3.TianjinGasin DH Preservat Technol Ltd Co Ltd, Tianjin, Peoples R China

4.Tianjin Univ Sci & Technol, Coll Food Sci & Engn, State Key Lab Food Nutr & Safety, Tianjin 300457, Peoples R China

期刊名称：JOURNAL OF FOOD PROCESSING AND PRESERVATION （ 影响因子：2.19； 五年影响因子：2.271 ）

ISSN： 0145-8892

年卷期： 2021 年 45 卷 4 期

页码：

收录情况： SCI

摘要： Rhizome rot and quality deterioration of tender ginger after harvest were the restricting factors of tender ginger storage quality. In this research, cold storage with SO2 fumigation function was designed and the effects of 0.2, 0.5, and 1.0 ml L-1 SO2 fumigation every 15 d on the storage quality of tender ginger was investigated. The improved cold storage and supporting equipment can automatically fill and remove SO2 gas into the storage room, and keep the humidity stable at 92%-95% during storage. Experimental results showed that automatic periodical SO2 fumigation of tender ginger with 0.5 ml L-1 SO2 every 15 d can effectively maintain firmness (similar to 56%), retard weight loss (similar to 22%), reduce decay rate (similar to 20%), and inhibit the accumulation of malondialdehyde (MDA) content (similar to 26%). Meanwhile, the 0.5 ml L-1 SO2 treatment enhanced the disease resistance of tender ginger by enhancing phenylalanine ammonia lyase (PAL) activity (similar to 8%) and inhibiting polyphenol oxidase (PPO) activity (similar to 25%), and the integrity of tissue structure was also well maintained. More importantly, the SO2 residue in the tender ginger treated with the 0.5 ml L-1 SO2 completely met the FDA food safety standard on the 50 d. Therefore, the combination of cold storage structure innovation and 0.5 ml L-1 SO2 periodical fumigation is more effective at improving the storage quality of tender ginger. Practical applications Automatic periodical SO2 fumigation showed great potential application in maintaining the storage quality of ginger after harvest. The activity levels of defense enzymes were significantly increased and the storage quality of tender ginger was well maintained. Automatic periodical fumigation of tender ginger with 0.5 ml L-1 SO2 is a simple, safe, low cost, and convenient method to improve the storage quality of tender ginger.

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