Effects of high-pressure treatment on free fatty acids release during ripening of ewes' milk cheese

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Abstract

The free fatty acid (FFA) profile of high pressure treated ewes' milk cheeses were studied to assess the effect of pressure treatment on cheese lipolysis. Cheeses were treated at 200, 300, 400 or 500 MPa (2P to 5P) at two stages of ripening (after 1 and 15 days of manufacturing; P1 and P15) and FFA were assayed at 1, 15 and 60 d ripening. On the first day of ripening, 3P1-cheeses showed levels of FFA twice that of the control cheeses. However, no significant differences were found between 3P1 and control cheeses at 60 d ripening. On the contrary, 4P1 and 5P1-cheeses had the lowest total FFA levels. The point at which pressure treatment was applied influenced the FFA profile of cheeses; cheeses pressurized at pressures <400 MPa on the first day of ripening were more similar to untreated cheeses than their homologues treated at 15 d. © 2007 Proprietors of Journal of Dairy Research.
Original languageEnglish
Pages (from-to)438-445
JournalJournal of Dairy Research
Volume74
DOIs
Publication statusPublished - 1 Nov 2007

Keywords

  • Ewes' milk cheese
  • High-pressure treatment
  • Lipolysis

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