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Influence of high-pressure processing (HPP) on physico-chemical properties of fresh cheese

Okpala, COR and Piggott, J.R. and Schaschke, C.J. (2010) Influence of high-pressure processing (HPP) on physico-chemical properties of fresh cheese. Innovative Food Science and Emerging Technologies, 11 (1). pp. 61-67. ISSN 1466-8564

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Abstract

Freshly prepared rennet-coagulated soft cheese was high-pressure (HP) treated at up to 291 MPa and 29 min and using a full 2-factor central composite design of experiment, its physico-chemical properties (colour, fat, lipid oxidation, moisture and protein content, pH, and texture) were examined. HP treatment influenced significantly (p<0.05) the colour, fat, moisture, lipid oxidation, hardness and adhesiveness of the fresh cheese. Fat content increased apparently as moisture decreased significantly after HP treatment of above 100 MPa. Increased pressures reduced lipid oxidation but increased yellowness although the latter showed more effect over redness in the HP-treated fresh cheese. Also, increased pressures increased hardness, decreased acidity and adhesiveness in HP-treated fresh cheese although increased exposure was found to increase acidity. Industrial relevance: High isostatic pressure for processing fresh cheese is yet to be adopted on an industrial scale. There is a need for research to provide evidence that improved properties of fresh cheese can be realized. The effects of HPP on rennet-coagulated soft Scottish cheese are investigated and the data from this study have provided points where optimized characteristic properties of HPP fresh cheese can be attained, which can serve as a lead for HPP users on fresh cheese

Item type: Article
ID code: 26128
Keywords: high-pressure processing, fresh cheese, physico-chemical properties, response surface methodology, optimization, cheese, Chemical technology, Biology, Food Science, Chemistry(all), Industrial and Manufacturing Engineering
Subjects: Technology > Chemical technology
Science > Natural history > Biology
Department: Faculty of Science > Strathclyde Institute of Pharmacy and Biomedical Sciences
Faculty of Engineering > Chemical and Process Engineering
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Depositing user: Strathprints Administrator
Date Deposited: 13 Sep 2010 12:05
Last modified: 27 Mar 2014 09:01
URI: http://strathprints.strath.ac.uk/id/eprint/26128

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