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Chemical Constituent Profiling of Paecilomyces cicadae Liquid Fermentation for Astragli Radix

1
School of Chinese Pharmacy, Beijing University of Chinese Medicine, Beijing 100029, China
2
School of Pharmacy, BIN ZHOU Medical University, Yantai 260040, China
*
Authors to whom correspondence should be addressed.
Molecules 2019, 24(16), 2948; https://doi.org/10.3390/molecules24162948
Received: 1 August 2019 / Revised: 11 August 2019 / Accepted: 12 August 2019 / Published: 14 August 2019
PDF [5404 KB, uploaded 20 August 2019]
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Abstract

Astragli Radix (AR) is one of the most popular traditional Chinese medicines with chemical constituents including flavonoids and saponins. As recently evidenced, some fungi or their fermentation liquid may have the potential to affect the bioactive constituents and different pharmacological effects of AR. Thus, the composition of fermented AR (FAR) produced by Paecilomyces cicadae (Miquel) Samson in liquid-state fermentation was investigated using a UHPLC-LTQ-Orbitrap mass spectrometer in both positive and negative ion modes. Firstly, the MSn data sets were obtained based on a data-dependent acquisition method and a full scan–parent ions list–dynamic exclusion (FS-PIL-DE) strategy. Then, diagnostic product ions (DPIs) and neutral loss fragments (NLFs) were proposed for better constituent detection and structural characterization. Consequently, 107 constituents in total, particularly microconstituents in FAR and AR, were characterized and compared in parallel on the same LTQ–Orbitrap instrument. Our results indicated that AR fermentation with Paecilomyces significantly influenced the production of saponins and flavonoids, especially increasing the content of astragaloside IV. In conclusion, this research was not only the first to show changes in the chemical components of unfermented AR and FAR, but it also provides a foundation for further studies on the chemical interaction between microbiota and AR.
Keywords: Astragli Radix; Paecilomyces cicadae; liquid fermentation; chemical constituents; UHPLC-LTQ-Orbitrap MS Astragli Radix; Paecilomyces cicadae; liquid fermentation; chemical constituents; UHPLC-LTQ-Orbitrap MS
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).

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Wang, Y.; Mei, X.; Liu, Z.; Li, J.; Zhang, X.; Wang, S.; Geng, Z.; Dai, L.; Zhang, J. Chemical Constituent Profiling of Paecilomyces cicadae Liquid Fermentation for Astragli Radix. Molecules 2019, 24, 2948.

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