Evaluation of pulsed light for inactivation of foodborne pathogens on fresh-cut lettuce: Effects on quality attributes during storage
文献类型： 外文期刊
作者： Tao, Tingting 1 ; Ding, Chao 2 ; Han, Nengneng 3 ; Cui, Yu 2 ; Liu, Xianjin 1 ; Zhang, Cunzheng 1 ;
作者机构： 1.Jiangsu Acad Agr Sci, Lab Food Qual & Safety, State Key Lab Cultivat Base,Minist Agr,Inst Food, Minist Sci & Technol,Key Lab Control Technol & St, 50 Zhongling St, Nanjing 210014, Jiangsu, Peoples R China
2.Nanjing Univ Finance & Econ, Coll Food Sci & Engn, Collaborat Innovat Ctr Modern Grain Circulat & Sa, Key Lab Grains & Oils Qual Control & Proc, 3 Wenyuan Rd, Nanjing 210023, Jiangsu, Peoples R China
3.Nanjing Agr Univ, Coll Hort, 1 Weigang, Nanjing 210095, Jiangsu, Peoples R China
关键词： Fresh-cut hydroponic lettuce; Pulsed light; Microbial inactivation; Storage quality
期刊名称：FOOD PACKAGING AND SHELF LIFE （ 影响因子：6.429； 五年影响因子：6.239 ）
ISSN： 2214-2894
年卷期： 2019 年 21 卷
页码：
收录情况： SCI
摘要： Minimally processed vegetables have a short shelf life and are susceptible to contamination of various foodborne pathogens. The aim of this work is to evaluate the bactericidal efficacy of pulsed light (PL) against four common foodborne pathogens inoculated on lettuce surface and its impact on quality attributes of lettuce through 8 days of storage at 4 degrees C. The results indicated that PL treatments were effective for inactivating the pathogens load on the leaves by 2.03-6.56 log(10) CFU/g depending on the applied fluence. However, the susceptibility of tested pathogenic strains to PL treatments differed significantly (P < 0.05). Staphylococcus aureus was identified as the most sensitive strain to PL, Escherichia coll. and Salmonella enteritidis showed moderated susceptibility while Listeria monocytogenes was most resistant. At the end of refrigerated storage, all PL treated lettuce maintained significantly lower total bacteria counts and total yeast & mold counts than the untreated control, which were within the maximum limit of 7.0 log(10) CFU/g. PL treatments could maintained the product quality during 8 days of storage by minimizing weight loss, preserving color and keeping good level of total soluble solids, chlorophyll and ascorbic acid. To consider both safety and quality of fresh-cut lettuce as well as treatment feasibility, PL treatment with fluence of 8.2-12.5 J/cm(2) was recommended for surface decontamination and shelf life extension of fresh-cut hydroponic lettuce.
- 相关文献
作者其他论文 更多>>
-
Rational design and application of broad-spectrum antibodies for Bt Cry toxins determination
作者：Jin, Jiafeng;Chen, Wei;Xu, Chongxin;Xie, Yajing;Shen, Cheng;Meng, Meng;Zhu, Qin;Zhang, Xiao;Liu, Xianjin;Liu, Yuan;Jin, Jiafeng;Xu, Chongxin;Liu, Yuan;Jin, Jiafeng;Shen, Cheng;Pooe, Ofentse Jacob;Meng, Meng
关键词：Bt Cry toxins; Polyclonal antibodies; Monoclonal antibody; ELISA; Genetically modified crops
-
Generation of anti-idiotypic antibodies mimicking Cry2Aa toxin from an immunized mouse phage display library as potential insecticidal agents against Plutella xylostella
作者：Lin, Manman;Liu, Yuan;Zhang, Xiao;Xu, Chongxin;Hu, Xiaodan;Zhu, Qing;Xie, Yajing;Chen, Wei;Liu, Xianjin;Lin, Manman;Hu, Xiaodan;Xie, Yajing;Lin, Johnson;Liu, Yuan;Meng, Meng;Jin, Jiafeng;Shen, Cheng
关键词：Anti-idiotypic antibody; Single-chain variable fragment; Cry2Aa toxin; Insecticidal protein; Plutella xylostella
-
Risk assessment of Bacillus cereus in lettuce grown in open-field and greenhouse farming systems in China: A comparative study
作者：Qu, Yang;Zhou, Changyan;Suo, Yujuan;Yu, Shenghao;Gu, Haotian;Wang, Wen;Wang, Wenbo;He, Zhaoying;Shan, Hong;Gao, Min;Zhao, Xin;Wei, Chao;Tao, Tingting;Zhao, Guanghua
关键词：Diarrheal syndrome food poisoning; ready-to-eat vegetable; greenhouse; microbial risk assessment
-
Fluorescent and Colorimetric Dual-Readout Immunochromatographic Assay for the Detection of Phenamacril Residues in Agricultural Products
作者：Liu, Pengyan;Jiang, Lan;Wang, Yulong;Ye, Yuhui;Zhang, Cunzheng;Liu, Pengyan;Jiang, Lan;Wang, Yulong;Ye, Yuhui;Zhang, Cunzheng;Liu, Pengyan;Jiang, Lan;Wang, Yulong;Ye, Yuhui;Zhang, Cunzheng;Jiang, Lan;Zhang, Cunzheng;Zhao, Yun;Xue, Feng;Hammock, Bruce D.;Hammock, Bruce D.
关键词：fluorescent and colorimetric dual-readout; immunochromatographicassay; phenamacril; monoclonal antibody; polydopamine coated gold nanoparticles; quantum dots
-
Enhanced composite Co-MOF-derived sodium carboxymethyl cellulose visual films for real-time and in situ monitoring fresh-cut apple freshness
作者：Zhang, Zhepeng;Zhang, Yang;Wang, Chen;Zou, Xiaobo;Guo, Zhiming;Liu, Xianjin;El-Seedi, Hesham R.;Gomez, Paula L.;Alzamora, Stella M.
关键词：Metal-organic framework; Multifunctional nano-filler; Sodium carboxymethyl cellulose; Intelligent film; Freshness monitoring
-
Preparation of monoclonal antibody and establishment of indirect competitive chemiluminescence enzyme immunoassay for sodium pentachlorophenolate
作者：Dong, Sa;Shi, Qiuyun;Guan, Lingjun;Feng, Jianguo;Guan, Lingjun;Wang, Yulong;Liu, Pengyan;Zhang, Cunzheng
关键词：Sodium pentachlorophenate; Monoclonal antibody; ic-CLEIA; Residual detection; Animal tissues
-
Colorimetric and Reverse Fluorescence Dual-Signal Readout Immunochromatographic Assay for the Sensitive Determination of Sibutramine
作者：Gui, Yun;Zhang, Cunzheng;Gui, Yun;Zhao, Yun;Liu, Pengyan;Wang, Yulong;Mao, Xinxin;Zhang, Cunzheng;Zhao, Yun;Peng, Chifang;Mao, Xinxin;Zhang, Cunzheng;Hammock, Bruce D.;Hammock, Bruce D.
关键词：
