A1 Vertaisarvioitu alkuperäisartikkeli tieteellisessä lehdessä

Direct inlet negative ion chemical ionization tandem mass spectrometric analysis of triacylglycerol regioisomers in human milk and infant formulas




TekijätFabritius Mikael, Linderborg Kaisa M, Tarvainen Marko, Kalpio Marika, Zhang Yumei, Yang Baoru

KustantajaElsevier BV

Julkaisuvuosi2020

JournalFood Chemistry

Tietokannassa oleva lehden nimiFood chemistry

Lehden akronyymiFood Chem

Artikkelin numero126991

Vuosikerta328

Sivujen määrä14

ISSN0308-8146

eISSN1873-7072

DOIhttps://doi.org/10.1016/j.foodchem.2020.126991

Verkko-osoitehttps://www.sciencedirect.com/science/article/pii/S0308814620308530?via%3Dihub

Rinnakkaistallenteen osoitehttps://research.utu.fi/converis/portal/detail/Publication/48475590


Tiivistelmä
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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