电子舌在中华绒螯蟹产地鉴别及等级评定的应用

采用电子舌对产自阳澄湖、松江、崇明的不同等级雌性中华绒螯蟹各可食部位的滋味轮廓进行检测。运用主成分分析法处理电子舌测定数据后发现，特级、1级、2级阳澄湖中华绒螯蟹体肉、钳肉、足肉、性腺4 个部位滋味轮廓区分显著。采用软独立建模的方法，分别建立了基于单部位及联合多部位的阳澄湖中华绒螯蟹产地鉴别模型，无论是单部位还是多部位模型，对非阳澄湖蟹样的拒绝率均为100%。采用偏最小二乘-判别分析法建立了中华绒螯蟹的等级评定模型，特级、1级、2级蟹样的偏最小二乘-判别分析模型相关系数均在0.90以上，采用上述模型可100%正确识别16 个未知蟹样的等级。

Habitat Identification and Grade Evaluation of Chinese Mitten Crab (Eriocheir sinensis) Using Electronic Tongue

Electronic tongue (E-tongue) technology was applied in this study to detect the taste profiles of the abdomen,
claw, leg meat and gonad part of female Eriocheir sinensis farmed in Yangcheng Lake, Songjiang and Chongming regions
from different quality grades. The principal component analysis (PCA) of E-tongue data showed that the taste profiles
of four edible parts of Yangcheng-Lake crabs in three grades (premium, first and second) could be distinguished well.
Soft independent modeling of class analogy (SIMCA) method was applied to establish the habitat identification models
of Yangcheng-Lake crabs based either on one single part or on multiple parts with a rejection ratio of 100% for non-
Yangcheng-Lake crabs. In addition, partial least squares-discriminant analysis (PLS-DA) was also used in this study to build
three grade evaluation models for Eriocheir sinensis of different grades. The correlation coefficients of the PLS-DA models
were all more than 0.90. Also, based on the PLS-DA models, the grades of 16 unknown crab samples could be correctly
identified with 100% accuracy.