期刊
FOOD CHEMISTRY
卷 369, 期 -, 页码 -出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.foodchem.2021.130998
关键词
Donor milk; Human milk banks; Pasteurization; Preterm; In vitro digestion; DIDGI
资金
- French Government [Campus France Italie grant] [895240k]
The study found that High Temperature-Short Time pasteurization and Holder pasteurization have different effects on peptide release in human milk during simulated preterm infant gastrointestinal digestion. The peptidomic profile of human milk differed according to the pasteurization type, with HTST pasteurization showing a greater similarity to raw milk.
High Temperature-Short Time (HTST) pasteurization was proposed as an alternative to Holder pasteurization (HOP) to increase the retention of specific human milk (HM) bioactive proteins. The present study explored whether HTST and HOP differently affect peptide release during simulated preterm infant gastrointestinal digestion. Raw (RHM), HOP- and HTST- pasteurized HM were digested using an in vitro dynamic system, and the identified peptides were analyzed by mass spectrometry and multivariate statistics. Before digestion, 158 peptides were identified in either RHM, HTST- or HOP- HM, mostly (84.4%) originating from beta-casein (CASB). During gastric digestion, HOP-HM presented a greater number and more abundant specific CASB peptides. A delayed release of peptides was observed in RHM during the intestinal phase, with respect to both pasteurized HM. Although limited to gastric digestion, the HM peptidomic profile differed according to the pasteurization type, and the pattern of the HTST peptides showed a greater similarity with RHM.
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