Correlation of Geographical Location with Stable Isotope Values of Hydrogen and Carbon of Fatty Acids from New Zealand Milk and Bulk Milk Powder

被引：40

作者：

Ehtesham, Emad ^{[1
]}

Hayman, Alan R. ^{[1
]}

McComb, Kiri A. ^{[1
]}

Van Hale, Robert ^{[1
]}

Frew, Russell D. ^{[1
,2
]}

机构：

[1] Univ Otago, Dept Chem, Dunedin, New Zealand

[2] FAO IAEA, Div Nucl Tech Food & Agr, Vienna, Austria

来源：

JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY | 2013年 / 61卷 / 37期

关键词：

milk powder; food authentication; fatty acid; stable isotopes; multivariate analysis; IRMS; LINOLEIC-ACID; DAIRY-COWS; ORIGIN; NITROGEN; RATIOS; FRACTIONATION; BIOSYNTHESIS; ABUNDANCE; CHEESE; CHINA;

D O I：

10.1021/jf4024883

中图分类号：

S [农业科学];

学科分类号：

09 ;

摘要：

The aim of this study was to investigate the correlation of delta H-2 and delta C-13 of bulk milk powder and milk powder fatty acids to their production region. A total of 46 milk powder samples from across New Zealand were collected and analyzed. Principal component analysis (PCA) showed that the delta H-2 and delta C-13 of four fatty acids (C4:0, C14:0, C16:0, C18:1) and bulk milk powder were found to be correlated with regional production area. Linear discriminant analysis (LDA) models were prepared using different combinations of bulk and fatty acid delta H-2 and delta C-13. All models were effective in discriminating samples from the North and South Islands. The LDA model using just fatty acid delta H-2 and delta C-13 provided the best separation. Therefore, the isotopic composition of the aforementioned fatty acids can be utilized as a good biomarker in milk powder that conveys reliable isotopic information to track milk powders to their regional origin.

引用

页码：8914 / 8923

页数：10

共 54 条

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