| Literature DB >> 10536853 |
Y G Shin1, K H Cho, J M Kim, M K Park, J H Park.
Abstract
A rapid and sensitive high-performance liquid chromatography-electrospray mass spectrometric method has been developed for the determination of betaine in Lycium chinense fruits. Betaine was analyzed on a system consisting of a NH2 stationary phase and a mobile phase of water-acetonitrile (25:75) by isocratic elution for 40 min. Betaine was identified and quantitated by electrospray ionization mass spectrometry with selected ion monitoring of the protonated ion [Betaine+H]+ and clustered ions [nBetaines+H]+. The limit of detection for betaine by this method was ca. 0.2 ng/ml and the relative standard deviations of the assay (intra- and inter-day) were less than 8.1%.Entities:
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Year: 1999 PMID： 10536853 DOI： 10.1016/s0021-9673(99)00720-7
Source DB: PubMed Journal: J Chromatogr A ISSN： 0021-9673 Impact factor: 4.759