乳制品中李斯特菌污染检测存在的技术难点及应对措施

Technical Challenges and Countermeasures forListeria monocytogenes Contamination Detection in Dairy Products

SHI Wenjing

（Shanxi Inspection and Testing Center （Shanxi Institute ofStandard Metrology Technology），Taiyuan O300l2，China）

Abstract： As an important foodborne pathogen in dairy products， Listeria monocytogenes poses severe challenges to detection work due to its unique low-temperature adaptability and strong stress resistance.This paper systematicall analyzes the technical diffculties faced bythe detection of Listeria monocytogenes in dairy products， such as low detection sensitivityin low-temperature environments and interference from matrix components，and proposes targeted countermeasures such as optimizing low-temperature enrichment culture system and establishing sample purification treatment processes，providing theoretical basis and technical support for improving the accuracy and reliability of Listeria monocytogenes detection in dairy products.

Keywords： dairy products; Listeria monocytogenes; contamination detection; low-temperature enrichment culture; sample purification

李斯特菌是一种革兰氏阳性兼性厌氧细菌，在自然界中分布广泛，可通过多种途径污染乳制品原料和加工环境[1]。（剩余4225字）