rapid detection of e. coli on goat meat by electronic nose
电子鼻技术检测山羊肉中大肠杆菌的研究
ding ning-ye1
lan yu-bin2
zheng xian-zhe3
abstract:much attention has been paid on the foodborne illness of food, which is easily contaminated with bacteria or pathogens. escherichia coli (e.coli) is one of these bacteria that commonly live in the contaminated animal meat. there is a growing need in the food industry for pathogen detection systems that are sensitive to low levels of bacteria, specific to the target organisms, capable of yielding results at or near real time. both contaminated and non-contaminated goat meat were tested using an electronic nose (cyranose 320) which consists of 32 polymer sensors. we developed an electronic nose method for the rapid detection of e. coli o157:h7 in goat meat. principal component analysis (pca) method was applied to analyze the experimental data, and the results indicated that they either overlap or are very close making it very difficult for the device to correctly identify. e-nose has a potential for being used as a tool for rapid detection of contamination, although it is not able to detect very low concentration of the contaminant.
文摘：食品中易受细菌或病原体污染的食源性疾病引起了人们的广泛关注。大肠杆菌(e.coli)是这些细菌中的一种，通常生活在受污染的动物肉类中。食品工业越来越需要对低水平的细菌敏感的病原体检测系统，这些细菌是针对目标生物体的，能够实时或近实时地产生结果。使用由32个聚合物传感器组成的电子鼻(cyranose320)对受污染和未受污染的山羊肉进行测试。我们开发了一种快速检测山羊肉中大肠杆菌o157:h7的电子鼻法。采用主成分分析(pca)方法对实验数据进行了分析，结果表明，这些数据要么重叠，要么非常接近，使得装置很难正确识别。电子鼻有潜力被用作快速检测污染物的工具，尽管它不能检测到非常低浓度的污染物。
keywords:goat meat; bacteria (e.coli); electronic nose; quality detection