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  • Title: In vivo digestion of bovine milk fat globules: effect of processing and interfacial structural changes. I. Gastric digestion.
    Author: Gallier S, Cui J, Olson TD, Rutherfurd SM, Ye A, Moughan PJ, Singh H.
    Journal: Food Chem; 2013 Dec 01; 141(3):3273-81. PubMed ID: 23871087.
    Abstract:
    The aim was to study the in vivo gastric digestion of fat globules in bovine cream from raw, pasteurised or pasteurised and homogenised milk. Fasted rats were gavaged once and chyme samples were collected after 30, 120 and 180 min post-gavage. Proteins from raw (RC) and pasteurised (PC) creams appeared to be digested faster and to a greater extent. Free fatty acids (FAs) increased throughout the 3h postprandial period. Short and medium chain FAs were released more rapidly than long chain FAs which were hydrolysed to a greater degree from PC. The size of the fat globules of all creams increased in the stomach. Protein aggregates were observed in pasteurised and homogenised cream chyme. Protrusions, probably caused by the accumulation of insoluble lipolytic products, appeared at the surface of the globules in RC and PC chyme. Overall, PC proteins and lipids appeared to be digested to a greater extent.
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