作者: Sheng Guo , Jin-ao Duan , Dawei Qian , Yuping Tang , Yefei Qian
DOI: 10.1021/JF305497R
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摘要: In this study, a sensitive and rapid method for the simultaneous determination of free amino acids without derivatization using hydrophilic interaction liquid chromatography coupled with tandem mass spectrometry (HILIC-MS/MS) was developed. The performed on an ultra-high-performance (UHPLC) separation system triple-quadrupole (TQ-MS) instrument. Sufficient 23 underivatized achieved Acquity BEH Amide column (2.1 mm × 100 mm, 1.7 μm) in single run 12 min. Then applied analysis 46 batches Ziziphus jujuba fruits which comprised 39 cultivars from 26 cultivation regions. Multivariate statistical also used to investigate differences acid profiles among samples. This study showed that HILIC-UHPLC-TQ-MS is effective technique analyze food