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. 2021 Feb 4;26(4):816. doi: 10.3390/molecules26040816

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© 2021 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 (http://creativecommons.org/licenses/by/4.0/).

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Representative product ion spectra MS/MS (a–c) for berberine (cortex), palmatine (root) and magnoflorine (cortex) obtained for studied isoquinoline alkaloids from Mahonia aquifolium extracts. Plant material collected during flowering. Mobile phase composition: v/v 0.1% HCOOH, 30% MeCN v/v. Experimental conditions: flow rate 0.6 mL/min, autosampler temperature 20 °C, drying gas flow rate 7.0 L/min; shielding gas flow rate 5.0 L/min; nebulizer gas pressure 40 psi; skimmer voltage 50 V, octopole voltage 800 V; capillary voltage 3500 V; drying gas temperature 295 °C; shielding gas temperature 315 °C; fragmentor voltage 195 V; CID energy in both MS and MS/MS were 5 and 20 eV.

Representative product ion spectra MS/MS (a–c) for berberine (cortex), palmatine (root) and magnoflorine (cortex) obtained for studied isoquinoline alkaloids from Mahonia aquifolium extracts. Plant material collected during flowering. Mobile phase composition: v/v 0.1% HCOOH, 30% MeCN v/v. Experimental conditions: flow rate 0.6 mL/min, autosampler temperature 20 °C, drying gas flow rate 7.0 L/min; shielding gas flow rate 5.0 L/min; nebulizer gas pressure 40 psi; skimmer voltage 50 V, octopole voltage 800 V; capillary voltage 3500 V; drying gas temperature 295 °C; shielding gas temperature 315 °C; fragmentor voltage 195 V; CID energy in both MS and MS/MS were 5 and 20 eV.