Matrix-assisted Laser Desorption/Ionization Mass Spectrometry of Natural and Synthetic Lignin

Lignin is one of the components, with cellulose and hemicellulose, of cell walls in all terrestrial plants. Lignin is an amorphous, three-dimensional, polyphenolic molecule charged with the function of giving strength and impermeability to the plant structure. The determination of its molecular weig...

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Detalles Bibliográficos
Autores: Bocchini, Paola, Galletti, Guido C., Seraglia, R., Traldi, P., Camarero, Susana, Martínez, Ángel T.
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:1996
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:dnet:digitalcsic_::63d588e3e14fec476cc31719be2919ed
Acceso en línea:http://hdl.handle.net/10261/429564
Access Level:acceso abierto
Palabra clave:Wheat straw
Descripción
Sumario:Lignin is one of the components, with cellulose and hemicellulose, of cell walls in all terrestrial plants. Lignin is an amorphous, three-dimensional, polyphenolic molecule charged with the function of giving strength and impermeability to the plant structure. The determination of its molecular weight and structure is still problematic owing to the difficulties in isolation of lignin from the other cell wall constituents. The present work reports the experimental conditions for matrix-assisted laser desorption/ionization time-of-flight mass spectrometry for the characterization of different types of natural lignins and of one synthetic lignin. A nitrogen laser (λ=337 nm) was used for ion desorption and sinapinic acid (3,5-dimethoxy-4-hydroxycinnamic acid) was chosen as the best matrix for lignin analysis. Data on the molecular weight distribution of oligomers in lignin and information on the monomeric constituents of different types of lignin are shown.

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