Labeling analysis of three neuropeptides(Met-enkephalin, Leu-enkephalin, and neurotensin) with 7-methoxycoumarin-3-carboxylic acid N-succinimidyl ester(MCSE) was investigated. The experimental conditions for label...
Five major disaccharide peaks were obtained from the digests of heparin by a novel heparinase from the species of Sphingobacterium on the high performance liquid chromatography (HPLC). The electrospray ionization-mass...
A new and sensitive method for the analysis of amino acids or oligopeptides has been developed by using transamination for fluorescence derivatization. Namely, α-amino group of amino acid or N-terminal amino group of...
Chlorin adduct ions of saponin are formed and detected under electrospray mass spectrometry condition. The result showed implied a new mode can be used for the characterization of saponin compounds. The condition and ...
Chitosans were successfully characterized by matrix assisted laser desorption ionization time-of-flight mass spectrometry (MALDI-TOFMS). By the use of 2,5-dihydroxybenzoic acid as matrix and second-crystallized method...