Differentiation of geographical origin of cream products in Poland according to their fatty acid profile. (1st July 2015)

• Record Type: Journal Article
• Authors: Rutkowska, Jaroslawa; Bialek, Malgorzata; Adamska, Agata; Zbikowska, Anna
• Is Part Of: Food chemistry. Volume 178(2015)
• Page Start: 26
• Page End: 31
• Publication Date: 2015-07-01
• Subjects: Fatty acids -- Chromatography -- Principal component analysis -- Geographical origin -- Dairy products; Food -- Analysis -- Periodicals; Food -- Composition -- Periodicals; 664
• DOI: 10.1016/j.foodchem.2015.01.036
• Languages: English
• ISSNs: 0308-8146

Abstract

Highlights: Two groups fatty acids is proposed to diversify cream according regions. CLA, vaccenic, linolenic, GLA are main indicators of mountainous region. Short-chain saturated fatty acids C4:0–C11:0 are markers of the lowland. Gas chromatography with chemometric approach discriminate cream according regions. Abstract: Fatty acid (FA) composition of bovine milk fat from cream samples, originating from three regions of Poland (one mountainous and two lowland ones) and collected within 2 years, was analysed aiming at identifying the region of production by applying principal component analysis (PCA). From the 44 FAs identified by gas chromatography, two groups were discerned: seasonally variable ( n = 17) and non-seasonal ( n = 7). The biplots showed that different FAs could serve as markers of geographical origin of cream samples. The CLA, vaccenic acid, C18:39 c12c15c, total C18:1 trans and C18:3 9c12c15c n − 6 (GLA) were found indicative of mountainous regions, and the short-chain saturated FAs (SCFA; C4:0–C11:0) – of the lowland ones. The Opole province was characterised by a high content of linoleic acid. It was concluded that the origin of a cream sample could be fairly well identified by gas chromatography combined with chemometric analysis of milk fat FAs.