期刊
出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jchromb.2013.09.032
关键词
SPR; HPLC-MS/MS; HSA; Eucommia ulmoides bark; Iridoid; Lignan
资金
- National Natural Science Foundation of China [21275163, 21005089]
- Science and Technology Program of Hunan Province, China [2012FJ2006]
- Central South University
- Key Laboratory of Hunan Forest Products and Chemical Industry Engineering [JDLC201201]
- aid program for Science and Technology Innovative Research Team (Chemicals of Forestry Resources and Development of Forest Products) in Higher Educational Institutions of Hunan Province
Eucommia ulmoides bark has long been known as tonic herb, however, the systematic biochemical fingerprint analysis and corresponding structural identification are inadequate so far. Here we describe on-line surface plasmon resonance-high performance liquid chromatography-tandem mass spectrometry (SPR-HPLC-MS/MS) to fish out and identify human serum albumin (HSA) binders from E. ulmoides bark. A total of 22 HSA binders, including 4 iridoids, 11 lignans, 3 flavonoids and 4 phenolic acids, were identified or tentatively characterized based on their retention times, UV spectra and MS/MS spectrum with references or literature data, among which, geniposidic acid, geniposide and chlorogenic acid were the predominant HSA binders. In addition, the major characteristic fragmentation pathways of iridoids and lignans were investigated. The higher reusability and stability of the immobilized HSA allow the method cost-effective and high-throughput. Compared with conventional HPLC-MS/MS for chemical fingerprint analysis, SPR-HPLC-MS/MS is simple and easy to provide biochemical fingerprint, moreover, it is easy to identify low-content HSA binders because of the sample clean-up/concentration procedure. (C) 2013 Elsevier B.V. All rights reserved.
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