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Detection and quantification of Escherichia coli and Pseudomonas aeruginosa in cow milk by near‐infrared spectroscopy
Author(s) -
CámaraMartos Fernando,
Lopes Joao Almeida,
MorenoRojas Rafael,
PérezRodríguez Fernando
Publication year - 2015
Publication title -
international journal of dairy technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.061
H-Index - 53
eISSN - 1471-0307
pISSN - 1364-727X
DOI - 10.1111/1471-0307.12191
Subject(s) - food science , escherichia coli , pseudomonas aeruginosa , bacteria , chemistry , biology , microbiology and biotechnology , biochemistry , genetics , gene
This work investigated the potential of NIR technology to be applied in the dairy industry for the detection of micro‐organisms. To this end, two types of cow milk samples were studied, one in which only bacterial biomass was considered and the other in which bacteria were cultured and grown in milk for 24 h. The study was carried out using two micro‐organisms E scherichia coli and P seudomonas aeruginosa . Both types of samples with different counts of both micro‐organisms were analysed by a NIR analyser in the range 10 000–4000 cm −1 based on transmittance measurements. Multivariate models indicated that a better discrimination between micro‐organisms was attained in those milk samples in which micro‐organisms have been grown.