Abstract
Ultraperformance liquid chromatography coupled with time-of-flight mass spectrometry (UPLC-QTOF/MS) based on a chemical profiling method was applied to rapidly evaluate the chemical consistency between sun-dried and sulfur-fumigated Radix Paeoniae Alba. By virtue of the high resolution, high speed of UPLC, and the accurate mass measurement of TOFMS coupled with reliable MarkerLynx software, five newly assigned monoterpene glycoside sulfonates were found and identified in sulfur-fumigated Radix Paeoniae Alba samples. This method could be applied for rapid quality evaluation of different kinds of sulfur-fumigated Radix Paeoniae Alba among commercial samples.
Highlights
Sulfur-fumigation processing is one of the traditional preservative approaches for most food, agricultural product, and herbal medicine
Residual sulfur dioxide in herbal medicine is harmful to human health
Mass spectrometry was performed on a Waters Xevo QTOF/MS system (Waters Corp., MA, USA), equipped with an electrospray ionization (ESI) source
Summary
Sulfur-fumigation processing is one of the traditional preservative approaches for most food, agricultural product, and herbal medicine. Under the chromatographic and MS conditions, the significantly changed components, in particular those newly generated components in sulfur-fumigated Radix Paeoniae Alba, were identified or tentatively assigned by comparing their mass spectra with the LC-MS/MS library and/or tentatively assigned by matching empirical molecular formula with that of published compounds and/or elucidating quasimolecular ions and fragment ions referring to the available literature information. This method could be applied for rapid quality evaluation of different kinds of sulfur-fumigated Radix Paeoniae Alba among commercial samples
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