大蒜绿变色素结构的初步解析

he structure of the green pigment was analysed by liquid chromatography-mass spectrometry (LC-MS), nuclear magnetic resonance(NMR) and infrared spectrum. The results presented that the molecular weight (MW) of the green pigment was 527; it can be initially confirmed that the pigment contains pyrrole ring, unsaturated bond and methyl; infrared spectrum analysis indicated that the green pigment contains -CH3, －OH , C=C and C=S. The green pigment belongs to aromatic heterocyclic compounds, which were inferred to be pyrrole derivatives that containing N.