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Ansari JA, Ismail M, Farid M. Investigation of nitrogen purging prior to UV treatment on quality of milk. INTERNATIONAL JOURNAL OF FOOD ENGINEERING 2020. [DOI: 10.1515/ijfe-2020-0052] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
Ultraviolet treatment (UV-C) is well known for its antimicrobial effects and current research shows that it has the potential to inactivate microorganisms in milk at much lower temperatures than conventional thermal treatment. However, Ultraviolet irradiation may result in adverse effects on milk quality, which arises due to photo oxidation in the presence of oxygen. Limiting the dissolved oxygen content in milk can minimize oxidative damage and thus, result in a better product quality. Nitrogen purging could be an effective method for reducing dissolved oxygen from liquids. The present study evaluates effects of nitrogen purging (prior to UV treatment) on milk quality. It was found that nitrogen purged UV treated milk causes minimal changes to physicochemical properties of milk.
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Affiliation(s)
- Jawaad Ahmed Ansari
- Department of Chemical and Materials Engineering , University of Auckland , Private Bag 92019 , Auckland 1142 , New Zealand
- Department of Food Engineering , NED University of Engineering & Technology , 75250 Karachi , Pakistan
| | - Marliya Ismail
- Department of Chemical and Materials Engineering , University of Auckland , Private Bag 92019 , Auckland 1142 , New Zealand
| | - Mohammed Farid
- Department of Chemical and Materials Engineering , University of Auckland , Private Bag 92019 , Auckland 1142 , New Zealand
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