Rapid separation and identification of 31 major saponins in Shizhu ginseng by ultra-high performance liquid chromatography–electron spray ionization–MS/MS

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Rapid separation and identification of 31 major saponins in Shizhu ginseng by ultra-high performance liquid chromatography–electron spray ionization–MS/MS Ting-Ting Sun, Xin-Lei Liang, He-Yun Zhu, Xu-Ling Peng, Xing-Jie Guo, Long-Shan Zhao Journal of Ginseng Research Volume 40, Issue 3, Pages 220-228 (July 2016) DOI: 10.1016/j.jgr.2015.07.008 Copyright © 2015 Terms and Conditions

Fig. 1 Total ion current chromatogram of Shizhu Ginseng at (A) positive ionization and (B) negative ionization modes. Journal of Ginseng Research 2016 40, 220-228DOI: (10.1016/j.jgr.2015.07.008) Copyright © 2015 Terms and Conditions

Fig. 2 Ultra-high performance liquid chromatography–electron spray ionization–MS positive mass spectra of (A) Re and (B) Rd and negative mass spectra of (C) Re, (D) Rf, and (E) Rh1. Journal of Ginseng Research 2016 40, 220-228DOI: (10.1016/j.jgr.2015.07.008) Copyright © 2015 Terms and Conditions

Fig. 3 Ultra-high performance liquid chromatography–electron spray ionization–MS positive mass spectra (B, C, and F) and negative mass spectra (A, D, and E) of Peak 15, the compound with molecular weight of 1,342 Da, and Peak 10. Journal of Ginseng Research 2016 40, 220-228DOI: (10.1016/j.jgr.2015.07.008) Copyright © 2015 Terms and Conditions

Fig. 4 Collision-induced dissociation mass spectra of ginsenosides (A) Re and (B) Rb1, and (C) notoginsenoside R1, (D) Peak 10, (E) Peak 15, and (F) the compound with molecular weight of 1,342 Da. (A) The charge-to-mass ratio of [M-H-162]–, [M-H-146-162]–, and [M-H-162-146-162]– are m/z 784.1, m/z 637.4, and m/z 475.3, respectively. (B) The charge-to-mass ratio of [M-H-162-x × n]– (n = 1, 2, 3, 4) are m/z 944.4, m/z 784.0, m/z 621.3, and m/z 459.7, respectively. (C) The charge-to-mass ratio of [M-H-132]–, [M-H-132-162]–, and [M-H-132-162 × 2]– are m/z 799, m/z 637, and m/z 476. (D) The charge-to-mass ratio of [M-H-132]– and [M-H-132-162]– are m/z 635.7 and m/z 474.9. (E) The charge-to-mass ratio of [M-H-44]–, [M-H-86]–, [M-H-104]–, and [M-H-86-162-162]– are m/z 1,149.2, m/z 1,106.8, m/z 1,088.8, and m/z 783.2. (F) The charge-to-mass ratio of [M-H-132]–, [M-H-132 × 2]–, [M-H-132 × 3]–, [M-H-132 × 3-162]–, and [M-H-132 × 3-162 × 2]– are m/z 1,209.3, m/z 1,077.0, m/z 945.1, m/z 783.5, and m/z 620.3. Journal of Ginseng Research 2016 40, 220-228DOI: (10.1016/j.jgr.2015.07.008) Copyright © 2015 Terms and Conditions