Qualitative and quantitative analysis of milk for the detection of adulteration by Laser Induced Breakdown Spectroscopy (LIBS)

Moncayo, S. ; Manzoor, S. ; Rosales, J.D. ; Anzano, J. (Universidad de Zaragoza) ; Caceres, J.O.

Resumen: The present work focuses on the development of a fast and cost effective method based on Laser Induced Breakdown Spectroscopy (LIBS) to the quality control, traceability and detection of adulteration in milk. Two adulteration cases have been studied; a qualitative analysis for the discrimination between different milk blends and quantification of melamine in adulterated toddler milk powder. Principal Component Analysis (PCA) and neural networks (NN) have been used to analyze LIBS spectra obtaining a correct classification rate of 98% with a 100% of robustness. For the quantification of melamine, two methodologies have been developed; univariate analysis using CN emission band and multivariate calibration NN model obtaining correlation coefficient (R2) values of 0.982 and 0.999 respectively. The results of the use of LIBS technique coupled with chemometric analysis are discussed in terms of its potential use in the food industry to perform the quality control of this dairy product.

Idioma: Inglés

DOI: 10.1016/j.foodchem.2017.04.017

Año: 2017

Publicado en: Food Chemistry 232 (2017), 322-328
ISSN: 0308-8146

Factor impacto JCR: 4.946 (2017)

Categ. JCR: CHEMISTRY, APPLIED rank: 5 / 71 = 0.07 (2017) - Q1 - T1
Categ. JCR: NUTRITION & DIETETICS rank: 11 / 81 = 0.136 (2017) - Q1 - T1
Categ. JCR: FOOD SCIENCE & TECHNOLOGY rank: 7 / 133 = 0.053 (2017) - Q1 - T1

Factor impacto SCIMAGO: 1.793 - Analytical Chemistry (Q1) - Medicine (miscellaneous) (Q1) - Food Science (Q1)

Tipo y forma: Article (PostPrint)

Área (Departamento): Área Química Analítica (Dpto. Química Analítica)