水产品中土臭味素和2-甲基异冰片及其检测技术研究进展

Progress in the development of methods to determine geosmin and 2-methylisoborneol in aquatic products

土臭味素和2-甲基异冰片是易引起水产品肉质产生异味的两种化合物。对水产品中土臭味素和2-甲基异冰片的检测技术进行研究,可为进一步进行两种化合物的去除奠定基础。本文对土臭味素和2-甲基异冰片的物理化学特性、安全性及其在水产品中的产生机理进行了介绍,并对水产品中土臭味素和2-甲基异冰片的检测方法进行了综述和展望。感官测定更多用作定性检测和辅助验证。气质联用法仍是水产品中土臭味素和2-甲基异冰片定量检测的主要方法。不过,气质联用法进行检测的各个环节对检测人员的专业技术要求比较高,因样品种类不同检测参数也应做适当调整。利用电子鼻和电子舌等进行土臭味素和2-甲基异冰片的感官检测还不多见。但电子鼻和电子舌等人工智能测定手段替代传统感官测定已是大势所趋。以气质联用法为主,辅以电子鼻、电子舌、电化学以及PCA、ANN等数学模型将有助于获得准确、科学的数据。

Two compounds, geosmin and 2-methylisoborneol, cause meat from aquatic products to have an off-flavor.Studies on detection technologies for geosmin and 2-methylisoborneol in aquatic products are important .Because they enable us to remove these two compounds from aquatic food products. This review presents both compounds＇ physical and chemical properties, safety, and mechanisms of production in detail.Determination methods for geosmin and 2-methylisoborneol in aquatic products were summarized and critically reviewed with regard to their application and improvement in the future as well. Sensory measurements are often used for qualitative testing and auxiliary verification. GC- MS is a critical method for qualitative detection of geosmin and 2-methylisobomeol in aquatic products. However, all aspects of detection using GC-MS need qualified staffs,and test parameters should be adjusted according to different samples.The use of electronic nose and tongue for sensory detection of geosmin and 2-methylisoborneol is rare, but artificial intelligence products ,such as electronic nose and tongue can effectively replace traditional sensory determination methods.In view of available techniques and their benefits, we propose the combination of electronic nose and tongue, electrochemical methods, PCA, ANN, and other mathematical models to obtain accurate scientific data.