Classification of Frankfurters by FT-Raman Spectroscopy and Chemometric Methods

Molecules

Náira da Silva Campos¹  Kamila de Sá Oliveira¹  Mariana Ramos Almeida²  Rodrigo Stephani¹  Luiz Fernando Cappa de Oliveira¹ 

[1] Núcleo de Espectroscopia e Estrutura Molecular (NEEM), Departamento de Química, Universidade Federal de Juiz de Fora, Juiz de Fora, MG 36036-330, Brazil; E-Mails:;Instituto de Química, Universidade Estadual de Campinas, Campinas, SP 13084-971, Brazil; E-Mail:

关键词: frankfurters;    Raman spectroscopy;    PLS-DA;    quality control;   

DOI  :  10.3390/molecules191118980

来源: mdpi

【 摘 要 】

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.

【 授权许可】

CC BY   
© 2014 by the authors; licensee MDPI, Basel, Switzerland.