Differently sized native milk fat globules separated by microfilftration: fatty acid composition of the milk fat globule membrane and triglyceride core - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue European Journal of Lipid Science and Technology Année : 2005

Differently sized native milk fat globules separated by microfilftration: fatty acid composition of the milk fat globule membrane and triglyceride core

Résumé

The aim of this study was to characterize the fatty acid composition of the core and membrane of differently sized milk fat globules separated by microfiltration, which can now be used to manufacture dairy products. Native milk fat globules of various mean diameters, ranging from d43 = 2.3 µm to 8.0 µm, were obtained using microfiltration of raw whole milk. After milk fat globule washing, the milk fat globule membrane (MFGM) and the triglyceride core (TC) were separated by manual churning. After total lipid extraction from each fraction, their fatty acid composition was characterized using methyl ester analysis by gas chromatography. Regardless of season, no significant differences were observed in the fatty acid composition of the MFGM phospholipids. Conversely, significant differences were found in the fatty acid composition of TC; particularly, small fat globule TC contained more medium-chain fatty acids and less stearic acid than large fat globule TC. These results show that the previously observed differences in total fatty acid composition among differently sized milk fat globules are due to their triglyceride composition and MFGM amount rather than to the composition of the MFGM.

Dates et versions

hal-01453976 , version 1 (02-02-2017)

Identifiants

Citer

Caroline Fauquant, Valérie Briard-Bion, Nadine Leconte, Marie-Caroline Michalski. Differently sized native milk fat globules separated by microfilftration: fatty acid composition of the milk fat globule membrane and triglyceride core. European Journal of Lipid Science and Technology, 2005, 107 (2), pp.80-86. ⟨10.1002/ejlt.200401063⟩. ⟨hal-01453976⟩
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