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Extension of shelf life of semi-dry longan pulp with gaseous chlorine dioxide generating film

文献类型： 外文期刊

作者： Lin, Xian 1 ; Chen, Gaohui 1 ; Jin, Tony Z. 2 ; Wen, Ming 1 ; Wu, Jijun 1 ; Wen, Jing 1 ; Xu, Yujuan 1 ; An, Kejing 1 ; Yu, 1 ;

作者机构： 1.Guangdong Acad Agr Sci, Sericultural & Agrifood Res Inst, Key Lab Funct Foods, Minist Agr & Rural Affairs,Guangdong Key Lab Agr, 133 Dongguanzhuang Yiheng Rd, Tianhe Dist 510610, Guangdong, Peoples R China

2.ARS, Eastern Reg Res Ctr, USDA, 600 East Mermaid Lane, Wyndmoor, PA 19038 USA

关键词： Antimicrobial package; Shelf life; Semi-dry fruit; Chlorine dioxide; Chemical residues; Bioactive components

期刊名称：INTERNATIONAL JOURNAL OF FOOD MICROBIOLOGY （ 影响因子：5.277； 五年影响因子：5.388 ）

ISSN： 0168-1605

年卷期： 2021 年 337 卷

页码：

收录情况： SCI

摘要： A packaging system using gaseous chlorine dioxide generating film (CDGF) in a sealed container was developed to extend the shelf life of semi-dry longan pulp (moisture content 38.8 wt%; a(w)0.8). The antimicrobial properties, formation of chloroxyanion residues and effects of CDGF on the quality of semi-dry longan pulp were investigated. CDGF was triggered by the moisture vapor from semi-dry longan pulp in the sealed container and released gaseous ClO2 into the headspace of the container. The antifungal test showed that CDGF significantly inactivated artificially inoculated molds in semi-dry longan pulp and achieved reductions of over 3 log CFU/g after 28 days storage at room temperature (25 degrees C). CDGF reduced total aerobic bacterial populations by over 6.4 log CFU/g and maintained these population levels at around 2.0 log CFU/g throughout the 180-day storage period at room temperature. The residual concentrations of chloride, chlorate and perchlorate in longan pulp increased and then decreased during the 180-day storage. Residual chloride levels were maintained at 1.5 mg/g after Day 120 and residual chlorate and perchlorate levels were not detected after Day 120 and Day 180, respectively, in CDGF-treated samples. CDGF treatments reduced total polyphenol content but didn't have any significant impact on the levels of polysaccharides in samples. There were no significant differences between CDGF-treated and control samples in color changes during storage. The content of 5-hydroymethylfurfural (5-HMF) in both samples increased during storage, suggesting that the Maillard reaction occurred. This study demonstrated an effective approach to develop a new antimicrobial packaging system for semi-dry longan pulp.

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