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Detection of non-milk fat in milk fat by gas chromatography and linear discriminant analysis.
J Dairy Sci. 2009 May; 92(5):1846-55.JD

Abstract

Gas chromatography was utilized to determine triacylglycerol profiles in milk and non-milk fat. The values of triacylglycerol were subjected to linear discriminant analysis to detect and quantify non-milk fat in milk fat. Two groups of milk fat were analyzed: A) raw milk fat from the central region of Mexico (n = 216) and B) ultrapasteurized milk fat from 3 industries (n = 36), as well as pork lard (n = 2), bovine tallow (n = 2), fish oil (n = 2), peanut (n = 2), corn (n = 2), olive (n = 2), and soy (n = 2). The samples of raw milk fat were adulterated with non-milk fats in proportions of 0, 5, 10, 15, and 20% to form 5 groups. The first function obtained from the linear discriminant analysis allowed the correct classification of 94.4% of the samples with levels <10% of adulteration. The triacylglycerol values of the ultrapasteurized milk fats were evaluated with the discriminant function, demonstrating that one industry added non-milk fat to its product in 80% of the samples analyzed.

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Publisher Full Text
linkinghub.elsevier.com
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Authors+Show Affiliations

Gutiérrez R
Departamento de Producción Agrícola y Animal, Universidad Autónoma Metropolitana Unidad Xochimilco, Calz. Hueso 1100, Villa Quietud, 04960 Coyoacán, México D.F. México. reygut@correo.xoc.uam.mx
Vega S
No affiliation info available
Díaz G
No affiliation info available
Sánchez J
No affiliation info available
Coronado M
No affiliation info available
Ramírez A
No affiliation info available
Pérez J
No affiliation info available
González M
No affiliation info available
Schettino B
No affiliation info available

MeSH

AnimalsChromatography, GasDiscriminant AnalysisFatsFood AnalysisFood ContaminationMilkPlant OilsTriglycerides

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

19389942

Citation

Gutiérrez, R, et al. "Detection of Non-milk Fat in Milk Fat By Gas Chromatography and Linear Discriminant Analysis." Journal of Dairy Science, vol. 92, no. 5, 2009, pp. 1846-55.
Gutiérrez R, Vega S, Díaz G, et al. Detection of non-milk fat in milk fat by gas chromatography and linear discriminant analysis. J Dairy Sci. 2009;92(5):1846-55.
Gutiérrez, R., Vega, S., Díaz, G., Sánchez, J., Coronado, M., Ramírez, A., Pérez, J., González, M., & Schettino, B. (2009). Detection of non-milk fat in milk fat by gas chromatography and linear discriminant analysis. Journal of Dairy Science, 92(5), 1846-55. https://doi.org/10.3168/jds.2008-1624
Gutiérrez R, et al. Detection of Non-milk Fat in Milk Fat By Gas Chromatography and Linear Discriminant Analysis. J Dairy Sci. 2009;92(5):1846-55. PubMed PMID: 19389942.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Detection of non-milk fat in milk fat by gas chromatography and linear discriminant analysis. AU - Gutiérrez,R, AU - Vega,S, AU - Díaz,G, AU - Sánchez,J, AU - Coronado,M, AU - Ramírez,A, AU - Pérez,J, AU - González,M, AU - Schettino,B, PY - 2009/4/25/entrez PY - 2009/4/25/pubmed PY - 2009/5/6/medline SP - 1846 EP - 55 JF - Journal of dairy science JO - J Dairy Sci VL - 92 IS - 5 N2 - Gas chromatography was utilized to determine triacylglycerol profiles in milk and non-milk fat. The values of triacylglycerol were subjected to linear discriminant analysis to detect and quantify non-milk fat in milk fat. Two groups of milk fat were analyzed: A) raw milk fat from the central region of Mexico (n = 216) and B) ultrapasteurized milk fat from 3 industries (n = 36), as well as pork lard (n = 2), bovine tallow (n = 2), fish oil (n = 2), peanut (n = 2), corn (n = 2), olive (n = 2), and soy (n = 2). The samples of raw milk fat were adulterated with non-milk fats in proportions of 0, 5, 10, 15, and 20% to form 5 groups. The first function obtained from the linear discriminant analysis allowed the correct classification of 94.4% of the samples with levels <10% of adulteration. The triacylglycerol values of the ultrapasteurized milk fats were evaluated with the discriminant function, demonstrating that one industry added non-milk fat to its product in 80% of the samples analyzed. SN - 1525-3198 UR - https://www.unboundmedicine.com/medline/citation/19389942/Detection_of_non_milk_fat_in_milk_fat_by_gas_chromatography_and_linear_discriminant_analysis_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0022-0302(09)70499-0 DB - PRIME DP - Unbound Medicine ER -