Impact of UV-C treatment on the inactivation of microbes and amino acid composition in cow milk and buffalo milk: A comparative study

The study investigates the effect of UV-C light on microorganism's inactivation, amino acid (AA) profile, functional groups of milk metabolites and physiochemical properties of cow and buffalo milk. Cow and buffalo milk were inoculated with Escherichia coli, Salmonella enterica, and Listeria mo...

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Bibliographic Details
Published in:International dairy journal 2024-09, Vol.156, p.105979, Article 105979
Main Authors: Dasalkar, Akshay H., Maguluri, Raj Kumar, Vaishnav, Salony Raghunath, Singh, Sridevi Annapurna, Yannam, Sudheer Kumar
Format: Article
Language:English
Subjects:
amino acid composition
Amino acid profile
amino acids
Buffalo milk
color
comparative study
Cow milk
cows
Escherichia coli
FTIR
Listeria monocytogenes
metabolites
milk
NMR
Salmonella enterica
sensory evaluation
ultraviolet radiation
UV-C
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Summary:The study investigates the effect of UV-C light on microorganism's inactivation, amino acid (AA) profile, functional groups of milk metabolites and physiochemical properties of cow and buffalo milk. Cow and buffalo milk were inoculated with Escherichia coli, Salmonella enterica, and Listeria monocytogenes. Inoculated milk samples were treated with UV-C doses of 0, 1.5, 3.1 and 4.6 J cm−2. At 4.6 J cm−2 E. coli, S. enterica and L. monocytogenes were inactivated by 4.07. 4.41, and 4.92 log10 in cow milk, and 3.71, 3.74, and 4.42 log10 in buffalo milk, respectively. The physicochemical properties showed no significant changes except colour with significant changes (P 
ISSN:0958-6946
1879-0143
DOI:10.1016/j.idairyj.2024.105979