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Combination of heat treatment and chitosan coating to improve postharvest quality of wolfberry (Lycium barbarum)

文献类型： 外文期刊

作者： Ban, Zhaojun 1 ; Wei, Wenwen 2 ; Yang, Xiangzheng 2 ; Feng, Jianhua 2 ; Guan, Junfeng 1 ; Li, Li 4 ;

作者机构： 1.Xinjiang Agr Univ, Coll Forestry & Hort, Urumqi 830052, Peoples R China

2.All China Federat Supply & Mkt Cooperat, Jinan Fruit Res Inst, Jinan 250014, Peoples R China

3.Hebei Acad Agr & Forestry Sci, Inst Genet & Physiol, Shijiazhuang 050051, Peoples R China

4.Tianjin Univ Sci & Technol, Key Lab Food Nutr & Safety, Minist Educ, Tianjin 300457, Peoples R China

关键词： Chitosan;hot water treatment;Lycium barbarum;microstructure;quality;sensory;wolfberry

期刊名称：INTERNATIONAL JOURNAL OF FOOD SCIENCE AND TECHNOLOGY （ 影响因子：3.713； 五年影响因子：3.408 ）

ISSN：

年卷期：

页码：

收录情况： SCI

摘要： The synergistic application of hot water dip at 42 degrees C for 30min and 1% chitosan coating on differentiation in postharvest quality traits, microstructure as well as microbiological evolution of wolfberry fruits was investigated. Fresh wolfberry fruits were stored at 2 +/- 0.5 degrees C and 90% relative humidity (RH) for 28days. Results indicated the combination of prestorage heat treatment and chitosan coating maintained higher levels of ascorbic acid, total phenolic contents and antioxidant capacity as well as lower decay, compared with untreated wolfberry fruits. The possible mechanism was that the heat treatment almost sealed open stomata to limit the sites of pathogen penetration into fruits independently, followed by the biofilm formed by chitosan which controlled secondary infections as well as slowed changes in fruit respiration and metabolic activity in wolfberries. The synergistically treated fruit also exhibited a higher acceptability obtained by sensory analysis after cold storage. In this sense, the integrated application of heat treatment and chitosan coating could be regarded as an effective strategy to extend storage life and maintain the postharvest quality of wolfberry fruits.

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