Vibrational spectroscopy and chemometrics tools for authenticity and improvement the safety control in goat milk

Autor(es)

da Paixao Teixeira, Jose Luan ^[1] ; dos Santos Carames, Elem Tamirys ^[1] ; Baptista, Debora Parra ^[2] ; Gigante, Mirna Lucia ^[2] ; Lima Pallone, Juliana Azevedo ^[1]

Afiliação do(s) autor(es)

^[1] Univ Estadual Campinas, Sch Food Engn, Dept Food Sci, St Monteiro Lobato 80, BR-13083862 Campinas, SP - Brazil

^[2] Univ Estadual Campinas, Sch Food Engn, Dept Food Technol, St Monteiro Lobato 80, BR-13083862 Campinas, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: FOOD CONTROL; v. 112, JUN 2020.
• Citações Web of Science: 8

Resumo

Goat milk has a potential target of fraud. In this sense, Near Infrared Spectroscopy (NIRS) have been successfully used to detect food fraud. This study aimed to develop multivariate classification models using MRS to detect adulterants in goat milk. Principal Component Analysis (PCA), control chart, k-Nearest Neighbor (k-NN), Part Least Square-Discriminant Analysis (PIS-DA) and Soft Independent Modeling of Class Analogies (SIMCA) were used to detect the adulterants: water, urea, bovine whey and cow's milk in goat's milk samples with concentrations of 0 (control), 1, 5, 10, 15 and 20% v/v, resulting in 300 control samples and 300 adulterated samples. The control chart discriminated authentic and adulterated samples with 95% confidence. The PLS-DA results were better compared to those obtained by k-NN and SIMCA; presenting 100% sensitivity and specificity in calibration, cross validation, and prediction. Therefore, NIRS combined with PIS-DA was adequate to detect goat milk safety control associated with adulteration. (AU)

• Processo FAPESP: 18/09759-3 - Alimentos de alto valor agregado: simulação de digestão in vitro para estimativa de bioacessibilidade de minerais e detecção de adulterações com emprego de espectroscopia no infravermelho e quimiometria
• Beneficiário: Juliana Azevedo Lima Pallone
• Modalidade de apoio: Auxílio à Pesquisa - Regular
• Processo FAPESP: 18/08864-8 - Bioacessibilidade de minerais lácteos caprinos e a avaliação da viabilidade do emprego de NIR e quimiometria para detecção de adulterações em leite de cabra e derivados
• Beneficiário: José Luan da Paixão Teixeira
• Modalidade de apoio: Bolsas no Brasil - Doutorado