Matrix-assisted laser desorption and electrospray ionization mass spectrometry of carminic acid isolated from cochineal

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• 作者：Maier ; Marta S. ; Parera ; Sara D. ; Seldes ; Alicia M.
• 关键词：Carminic acid ; Cochineal ; Matrix-assisted laser desorption ; Electrospray ionization
• 刊名：International Journal of Mass Spectrometry
• 出版年：2004
• 出版时间：April 1, 2004
• 年：2004
• 卷：232
• 期：3
• 页码：225-229
• 全文大小：98.6 K

文摘

Carminic acid, isolated from cochineal, was analyzed by matrix-assisted laser desorption/ionization (MALDI) and electrospray mass spectrometry (ESI-MS). Application of both techniques to the analysis of carminic acid suspended in linseed oil and applied to a piece of canvas, demonstrated the ability of MALDI and ESI-MS to identify this organic dye in a mixture as those used in easel painting.