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Effect of poly-epsilon-lysine incorporated into alginate-based edible coatings on microbial and physicochemical properties of fresh-cut kiwifruit

文献类型: 外文期刊

作者: Li, Shunfeng 1 ; Zhang, Lihua 2 ; Liu, Mengpei 2 ; Wang, Xiaoyuan 2 ; Zhao, Guangyuan 2 ; Zong, Wei 2 ;

作者机构: 1.Henan Acad Agr Sci, Inst Agroprod Proc, Zhengzhou 450002, Henan, Peoples R China

2.Zhengzhou Univ Light Ind, Sch Food & Bioengn, Zhengzhou 450002, Henan, Peoples R China

3.Collaborat Innovat Ctr Food Prod & Safety, Zhengzhou 450002, Henan, Peoples R China

4.116 Huayuan Rd, Zhengzhou 450002, Henan, Peoples R China

关键词: Fresh-cut kiwifruit;Poly-epsilon-lysine;Alginate;Microbial load;Physicochemical property

期刊名称:POSTHARVEST BIOLOGY AND TECHNOLOGY ( 影响因子:5.537; 五年影响因子:5.821 )

ISSN: 0925-5214

年卷期: 2017 年 134 卷

页码:

收录情况: SCI

摘要: This work investigates the effectiveness of different concentrations (0.05%, 0.10% and 0.15%) of poly-epsilon-lysine (epsilon-PL) incorporated into an alginate-based edible coating to inhibit microbial proliferation and maintain physicochemical properties of fresh-cut kiwifruit stored at 4 +/- 0.5 degrees C for 14 d. Changes in O-2 and CO2 concentration, physicochemical indices, microbiological counts and morphological properties were measured. Results showed that low levels of e-PL (0.05% and 0.10%) led to lower CO2 and higher O-2 concentrations inside the packages compared with samples with control and 0.15% epsilon-PL treatments. Moreover, the alginate-based edible coating containing 0.05% epsilon-PL significantly reduced electrolyte leakage and MDA content while maintained the green color, total chlorophylls content, ascorbic acid, antioxidant capacity and morphological properties of fresh-cut kiwifruit. In addition, 0.05% epsilon-PL treatment reduced aerobic plate counts and yeast and mould counts by 3.5 and 2.5 log CFU/g, respectively, at the end of evaluation. Our results show that there is promise for the use of edible coating incorporated with epsilon-PL to preserve the quality of sliced kiwifruit.

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