期刊
FOOD CHEMISTRY
卷 328, 期 -, 页码 -出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.foodchem.2020.126991
关键词
Human milk; Infant formula; Triacylglycerol; Regioisomer; Mass spectrometry; Direct inlet tandem mass spectrometry; Negative ion chemical ionization
资金
- Academy of Finland (Chiral lipids in chiral nature: a novel strategy for regio-and stereospecific research of human milk and omega-3 lipids) [310982]
- Valio Ltd (Helsinki, Finland)
- University of Turku Graduate School (Doctoral Programme in Molecular Life Sciences)
- Finnish Cultural Foundation
- Academy of Finland (AKA) [310982, 310982] Funding Source: Academy of Finland (AKA)
A previously developed direct inlet tandem mass spectrometric method for analysis of triacylglycerol (TAG) regioisomers was updated and validated for operation with current instrumentation with improved sensitivity and throughput. TAG regioisomers in pooled Chinese and Finnish human milk samples, two bovine milk samples and 11 infant formulas were identified and quantified. A total of 241 TAG regioisomers were identified and quantified, consisting of over 60 mol% of all TAGs in the human milk samples. The infant formulas deviated largely from human milk in regioisomeric composition of TAGs. In the Finnish and Chinese human milks, the most abundant ones were 1,3-dioleoyl-2-palmitoylglycerol (OPO; 7.4 and 8.8 mol% of all TAGs) and 1(3)-linoleoyl-2-palmitoyl-3(1)-oleoylglycerol (LPO; 4.7 and 8.3 mol% of all TAGs). In the infant formulas 1,2(2,3)-dioleoyl-3-(1)-palmitoylglycerol (OOP) and 1(3)-linoleoyl-2-oleoyl-3(1)-palmitoylglycerol/1(3)-palmitoyl-2-linoleoyl-3-(1)-oleoylglycerol (LOP/PLO) were more abundant than OPO and LPO. The differences between human milk and infant formula prompt for further development of current formulas.
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