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Molecules 2014, 19(11), 18980-18992;

Classification of Frankfurters by FT-Raman Spectroscopy and Chemometric Methods

Espectroscopia e Estrutura Molecular (NEEM), Departamento de Química, Universidade Federal de Juiz de Fora, Juiz de Fora, MG 36036-330, Brazil
Instituto de Química, Universidade Estadual de Campinas, Campinas, SP 13084-971, Brazil
Gemacom Tech, Juiz de Fora, MG 36092-050, Brazil
Author to whom correspondence should be addressed.
Received: 29 July 2014 / Revised: 7 October 2014 / Accepted: 21 October 2014 / Published: 18 November 2014
(This article belongs to the Special Issue Advances of Vibrational Spectroscopic Technologies in Life Sciences)
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Frankfurters are widely consumed all over the world, and the production requires a wide range of meat and non-meat ingredients. Due to these characteristics, frankfurters are products that can be easily adulterated with lower value meats, and the presence of undeclared species. Adulterations are often still difficult to detect, due the fact that the adulterant components are usually very similar to the authentic product. In this work, FT-Raman spectroscopy was employed as a rapid technique for assessing the quality of frankfurters. Based on information provided by the Raman spectra, a multivariate classification model was developed to identify the frankfurter type. The aim was to study three types of frankfurters (chicken, turkey and mixed meat) according to their Raman spectra, based on the fatty vibrational bands. Classification model was built using partial least square discriminant analysis (PLS-DA) and the performance model was evaluated in terms of sensitivity, specificity, accuracy, efficiency and Matthews’s correlation coefficient. The PLS-DA models give sensitivity and specificity values on the test set in the ranges of 88%–100%, showing good performance of the classification models. The work shows the Raman spectroscopy with chemometric tools can be used as an analytical tool in quality control of frankfurters. View Full-Text
Keywords: frankfurters; Raman spectroscopy; PLS-DA; quality control frankfurters; Raman spectroscopy; PLS-DA; quality control

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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).

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Campos, N.S.; Oliveira, K.S.; Almeida, M.R.; Stephani, R.; de Oliveira, L.F.C. Classification of Frankfurters by FT-Raman Spectroscopy and Chemometric Methods. Molecules 2014, 19, 18980-18992.

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