华南理工大学学报(自然科学版) ›› 2025, Vol. 53 ›› Issue (4): 135-146.doi: 10.12141/j.issn.1000-565X.240169

• 食品科学与技术 • 上一篇    

冷藏肉中致病菌的三重ERA快速检测

杨艳歌1, 吴占文1,2, 刘通1, 王帅1,2, 魏莹1,2, 赵健淞1,2, 李红娜1, 李涛1, 张峰1   

  1. 1.中国检验检疫科学研究院 国家市场监管重点实验室(食品质量与安全),北京 100176
    2.黑龙江八一农垦大学 生命科学技术学院,黑龙江 大庆 163000
  • 收稿日期:2024-04-09 出版日期:2025-04-25 发布日期:2024-07-22
  • 通信作者: 张峰(1974—),男,博士,研究员,主要从事分析化学研究。 E-mail:fengzhang@126.com
  • 作者简介:杨艳歌(1984—),女,硕士,副研究员,主要从事食品质量与安全研究。E-mail: yange8602@126.com
  • 基金资助:
    国家重点研发计划项目(2022YFF1100900);中国检验检疫科学研究院基本科研业务费项目(2024JK031)

Triple ERA Rapid Detection Method for Pathogens in Refrigerated Meat Products

YANG Yange1, WU Zhanwen1,2, LIU Tong1, WANG Shuai1,2, WEI Ying1,2, ZHAO Jiansong1,2, LI Hongna1, LI Tao1, ZHANG Feng1   

  1. 1.Key Laboratory of Food Quality and Safety for State Market Regulation,Chinese Academy of Inspection and Quarantine,Beijing 100176,China
    2.College of Life Science and Biotechnology,Heilongjiang Bayi Agricultural University,Daqing 163000,Heilongjiang,China
  • Received:2024-04-09 Online:2025-04-25 Published:2024-07-22
  • Contact: 张峰(1974—),男,博士,研究员,主要从事分析化学研究。 E-mail:fengzhang@126.com
  • About author:杨艳歌(1984—),女,硕士,副研究员,主要从事食品质量与安全研究。E-mail: yange8602@126.com
  • Supported by:
    the National Key Research and Development Program of China(2022YFF1100900)

摘要:

肉类食品因富含营养,常成为微生物滋生的理想环境,即使在低温储存下,多数微生物也依然保持活性和保留部分毒力,故对肉类食品进行致病菌筛查至关重要。该研究基于酶促重组等温扩增技术(ERA),开发三重荧光ERA快速检测方法,并对方法的特异性、灵敏度、检出限进行性能分析,然后对市售冷藏肉开展方法的适用性验证,并与行业标准SN/T 1870—2016实时荧光聚合酶链式反应(PCR)方法进行结果比对。结果显示:成功构建了一种针对冷藏肉类中的沙门氏菌、金黄色葡萄球菌、单核细胞增生李斯特氏菌3种关键致病菌的三重荧光ERA快速检测方法;经过优化,该方法能在12 min内通过单次反应同时完成3种致病菌的快速检测;最低检出限低至10-3 ng/μL;对于人工模拟污染样品,经过6 h的前增菌,采用该方法可同时检出污染量为1 CFU/mL的3种致病菌;对市售冷藏肉品的抽检结果显示,金黄色葡萄球菌检出率为19.35%,沙门氏菌检出率为12.90%,单核细胞增生李斯特氏菌检出率为6.45%,与行业标准SN/T 1870—2016的检测结果吻合,充分证明了该方法的准确性与适用性。该研究不仅有助于降低食源性致病菌引发的疾病风险,还可为未来食源性致病菌现场快速检测提供坚实的技术支撑。

关键词: 冷藏肉品, 食源性致病菌, 三重荧光ERA, 快速检测

Abstract:

Meat products, being rich in nutrients, often provide an ideal environment for microbial growth.Even under low temperature storage, most microorganisms remain active and retain partial virulence. Therefore, screening for pathogenic bacteria in meat products is crucial. This study developed a triple-fluorescence ERA (enzyme-mediated recombinase polymerase amplification) rapid detection method based on enzyme recombinase amplification (ERA) technology. Performance analyses were conducted on the method’s specificity, sensitivity, and detection limits. Additionally, the applicability of the method was validated using commercially available refrigerated meats and compared to the industry standard SN/T 1870—2016 real-time fluorescent polymerase chain reaction (PCR) method. The results show that a triple-fluorescent ERA rapid detection method was successfully constructed for three key pathogens: Staphylococcus aureus, Salmonella and Listeria monocytogenes. After optimization, the method could simultaneously detect the three pathogens within 12 min from a single reaction. The minimum detection limit is 10-3 ng/μL. In artificially contaminated samples, after 6 hours of pre-enrichment, the method can simultaneously detect contamination levels of 1 CFU/mL for all three pathogens. The sampling results of commercially available refrigerated meat show that the detection rates for Staphylococcus aureus, Salmonella, and Listeria monocytogenes were 19.35%, 12.90%, and 6.45%, respectively, which align with the detection results of the industry standard SN/T 1870―2016. These fully demonstrate the accuracy and applicability of the method. This study not only helps reduce the risk of disease caused by foodborne pathogens but also provides solid technical support for future rapid detection of foodborne pathogens.

Key words: refrigerated meat products, foodborne pathogens, triple-fluorescence ERA, rapid detection

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