Fatty acid and stable carbon isotope composition of Slovenian milk : year, season, and regional variability

Potočnik, Doris (author), Strojnik, Lidija (author), Eftimov, Tome (author), Levart, Alenka (author), Ogrinc, Nives (author)

This study examined the percentage and stable isotope ratios of fatty acids in milk to study seasonal, year, and regional variability. A total of 231 raw cow milk samples were analyzed. Samples were taken twice per year in 2012, 2013, and 2014, in winter and summer, covering four distinct geographical regions in Slovenia: Mediterranean, Alpine, Dinaric, and Pannonian. A discriminant analysis model based on fatty acid composition was effective in discriminating milk according to the year/season of production (86.9%), while geographical origin discrimination was less successful (64.1%). The stable isotope composition of fatty acids also proved to be a better biomarker of metabolic transformation processes in ruminants than discriminating against the origin of milk. Further, it was observed that milk from Alpine and Mediterranean regions was healthier due to its higher percentage of ω-3 polyunsaturated fatty acid and conjugated linoleic acid.

• Language: English
• Keywords: milk, fatty acids, stable carbon isotope composition, GC-FID, CSIA, statistical analyses
• Work type: Article
• Typology: 1.01 - Original Scientific Article
• Organization: BF - Biotechnical Faculty
• Publication status: Published
• Publication version: Version of Record
• Year: 2020
• Number of pages: 18 str.
• Numbering: Vol. 25, iss. 12, art. 2892
• PID: 20.500.12556/RUL-133853
• UDC: 502/504
• ISSN on article: 1420-3049
• DOI: 10.3390/molecules25122892
• COBISS.SI-ID: 20851715
• Publication date in RUL: 17.12.2021

Record is a part of a journal

• Title: Molecules
• Shortened title: Molecules
• Publisher: MDPI
• ISSN: 1420-3049
• COBISS.SI-ID: 18462981

Licences

• License: CC BY 4.0, Creative Commons Attribution 4.0 International
• Link: http://creativecommons.org/licenses/by/4.0/
• Description: This is the standard Creative Commons license that gives others maximum freedom to do what they want with the work as long as they credit the author.
• Licensing start date: 23.06.2020