@article{LIU2022, 
author = {Chunxia LIU and Guoxia DUAN and Lijun LIU and Sumin CHEN and Cuizhi LI and Zhiyong LÜ},
title = {Determination of 1-Oleic-2-Palmitic-3-Linoleic Acid Triglyceride in Infant Formula},
year = {2022},
journal = {Journal of Dairy Science and Technology},
volume = {45},
number = {3},
pages = {24-28},
keywords = {milk powder, 1-oleic-2-palmitic-3-linoleic acid triglyceride, CP-TAP CB elastic quartz capillary column, hydrogen flame ionization detector, gas chromatography},
url = {https://www.sciopen.com/article/10.7506/rykxyjs1671-5187-20220330-015},
doi = {10.7506/rykxyjs1671-5187-20220330-015},
abstract = {A gas chromatographic (GC) method for the determination of 1-oleic-2-palmitic-3-linoleic-triglyceride (OPL) in milk powder was established. The samples were extracted with ether and petroleum ether, and the extract was concentrated to near dryness, re-dissolved in n-heptane, separated on a CP-TAP CB elastic quartz capillary column, detected by a hydrogen flame ionization detector, and quantified by an external standard method. The column temperature was programmed to rise. The inlet temperature was set at 330 ℃. The samples (1.0 μL) were injected using the split mode (1:10). The detector temperature was set at 360 ℃. Nitrogen was used as the carrier gas. The makeup flow rate (nitrogen) was 25 mL/min. The recovery of OPL from spiked milk powder at 1–6 g/100 g ranged from 95.2% to 101.9%, and the relative standard deviations (RSDs) for precision ranged from 1.289% to 1.998%. The limit of detection (LOD) and limit of quantitation (LOQ) of the proposed method were 0.2 and 1.0 g/100 g, respectively. This method, therefore, is simple, accurate, repeatable, and suitable for the determination of OPL in milk powder.}
}