| Autor: |
Pinho, Susana C. M., Faria, Miguel, Casal, Susana, Sobral, M. Madalena C., Alves, Rui, Cabrita, Ana R. J., Fonseca, António J. M., Ferreira, Isabel M.P.L.V.O. |
| Zdroj: |
Journal of Agricultural and Food Chemistry; December 2021, Vol. 69 Issue: 47 p14241-14249, 9p |
| Abstrakt: |
Research on gastric lipolysis of commercial cow’s milk with different fatty acid (FA) compositions is scarce. Gastric lipase exhibits specificity for the sn-3 chain position of triacylglycerols, whose structure is influenced by milk FA composition. Therefore, during gastric digestion of conventional (C) vs pasture-based (P) milk, differences may occur on lipolysis, which has impact on free FA available, influencing their absorption/metabolism rate and physiological hormonal responses. Those two milk types were subjected to the INFOGEST semi-dynamic digestion model. Five gastric emptying points were analyzed for oxidative degradation of polyunsaturated fatty acids (PUFA) and individual free FA. The relative release of medium-chain FA (C8:0–C12:0) was higher than that of longer-chain FA (C14:0–C18:0), and a linear increase in markers of PUFA oxidative degradation occurred along gastric digestion. Quantitatively, C8:0, C18:2n-6, C18:3n-3, and CLAc9t11 were higher (P< 0.001) in P milk when compared with C milk. |
| Databáze: |
Supplemental Index |
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