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. 2023 Apr 24;12(5):986. doi: 10.3390/antiox12050986

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© 2023 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).

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The impact of storage temperature on changes in oxidized PC and TG species in dry human serum extracts over three days. (a) PC 34:2;O (m/z 832.5709 at 1.16 min) and two positional isomers of PC 34:2:O2 detected as [M+CH₃COO]⁻: (1) m/z 848.5658 at 1.07 min annotated as hydroxy or epoxide derivatives, (2) m/z 848.5658 at 1.16 min annotated as a hydroperoxide; (b) TG 52:4;O (m/z 888.7614 at 2.38 min) and TG 52:4;O2 (m/z 904.7557 at 2.35 min) detected as [M+NH₄]⁺. Data are mean ± s.d. (n = 6).