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Rapid authentication of edible bird's nest by FTIR spectroscopy combined with chemometrics
Author(s) -
Guo Lili,
Wu Yajun,
Liu Mingchang,
Ge Yiqiang,
Chen Ying
Publication year - 2018
Publication title -
journal of the science of food and agriculture
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.782
H-Index - 142
eISSN - 1097-0010
pISSN - 0022-5142
DOI - 10.1002/jsfa.8805
Subject(s) - chemometrics , fourier transform infrared spectroscopy , principal component analysis , linear discriminant analysis , authentication (law) , partial least squares regression , pattern recognition (psychology) , fourier transform , mathematics , artificial intelligence , computer science , chemistry , analytical chemistry (journal) , biological system , chromatography , statistics , biology , engineering , mathematical analysis , computer security , chemical engineering
BACKGROUND Edible bird's nests (EBNs) have been traditionally regarded as a kind of medicinal and healthy food in China. For economic reasons, they are frequently subjected to adulteration with some cheaper substitutes, such as Tremella fungus, agar, fried pigskin, and egg white. As a kind of precious and functional product, it is necessary to establish a robust method for the rapid authentication of EBNs with small amounts of samples by simple processes. In this study, the Fourier transform infrared spectroscopy (FTIR) system was utilized and its feasibility for identification of EBNs was verified. RESULTS FTIR spectra data of authentic and adulterated EBNs were analyzed by chemometrics analyses including principal component analysis, linear discriminant analysis (LDA), support vector machine (SVM) and one‐class partial least squares (OCPLS). The results showed that the established LDA and SVM models performed well and had satisfactory classification ability, with the former 94.12% and the latter 100%. The OCPLS model was developed with prediction sensitivity of 0.937 and specificity of 0.886. Further detection of commercial EBN samples confirmed these results. CONCLUSION FTIR is applicable in the scene of rapid authentication of EBNs, especially for quality supervision departments, entry–exit inspection and quarantine, and customs administration. © 2017 Society of Chemical Industry