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Rosa roxburghii Tratt Pomace Crude Extract Inactivates Cronobacter sakazakii Isolated from Powdered Infant Formula

文献类型： 外文期刊

作者： Fei, Peng 1 ; Xu, Jing 1 ; Xie, Jinlan 1 ; Huang, Jicheng 1 ; Feng, Hongxia 2 ; Chen, Xi 3 ; Jiang, Peiyi 1 ; Guo, Mingliang 1 ; Chang, Yunhe 2 ;

作者机构： 1.Nanyang Inst Technol, Sch Zhang Zhongjing Hlth Care & Food, Nanyang, Peoples R China

2.Guiyang Univ, Food & Pharmaceut Engn Inst, Guiyang 550005, Peoples R China

3.Guizhou Acad Agr Sci, Inst Integrated Agr Dev Res, Guiyang, Peoples R China

关键词： Rosa roxburghii Tratt pomace crude extract; Cronobacter sakazakii; inactivation effect; natural disinfectant; contact surface

期刊名称：FOODBORNE PATHOGENS AND DISEASE （ 影响因子：2.8； 五年影响因子：3.2 ）

ISSN： 1535-3141

年卷期： 2024 年 21 卷 4 期

页码：

收录情况： SCI

摘要： Cronobacter sakazakii is an important foodborne pathogen in powder infant formula (PIF). The objective of this study was to evaluate the inactivation effect of Rosa roxburghii Tratt pomace crude extract (RRPCE) on C. sakazakii isolated from PIF and to reveal the mechanism of action. The minimum inhibitory concentration (MIC) and minimum bactericidal concentration (MBC) were used to evaluate the inhibitory activity of RRPCE against C. sakazakii. The inhibitory mechanism was revealed from the perspective of effects of RRPCE on intracellular adenosine 5 '-triphosphate (ATP), reactive oxygen species (ROS), membrane potential, protein and nucleic acid leakage, and cell morphology of C. sakazakii. The inactivation effects of RRPCE on C. sakazakii in biofilms on stainless steel, tinplate, glass, silica gel, polyethylene terephthalate, and polystyrene to evaluate its potential as a natural disinfectant. The results showed that the MIC and MBC of RRPCE against C. sakazakii were 7.5 and 15 mg/mL, respectively. After treatments with RRPCE, intracellular ATP content decreased significantly while intracellular ROS level increased significantly (p < 0.05). The cell membrane depolarization, large leakage of proteins and nucleic acids, and severely damaged cell morphology also occurred in C. sakazakii treated with RRPCE. In addition, a 20-minute treatment with 2 MIC (15 mg/mL) of RRPCE could inactivate all C. sakazakii (from 6.10 to 6.40 CFU/mL) in biofilms on all six contact surfaces. Our findings suggest that RRPCE is ideal for the inactivation of C. sakazakii and has the potential to be used as a natural disinfectant for the inactivation of PIF packaging materials and containers.

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