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Characterization by Pyrolysis/Gas Chromatography/Mass Spectrometry of the Alkalilignin Obtained from Wheat Straw Soda‐cooking Effluents After Treatment with Streptomyces Strains
Author(s) -
Rodriguez J.,
Hernández M.,
Bocchini P.,
Galletti G. C.,
Arias M. E.
Publication year - 1996
Publication title -
rapid communications in mass spectrometry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.528
H-Index - 136
eISSN - 1097-0231
pISSN - 0951-4198
DOI - 10.1002/(sici)1097-0231(199612)10:15<1869::aid-rcm711>3.0.co;2-a
Subject(s) - chemistry , pyrolysis–gas chromatography–mass spectrometry , pyrolysis , lignin , effluent , mass spectrometry , gas chromatography , streptomyces , gas chromatography–mass spectrometry , chromatography , straw , microorganism , chemical composition , organic chemistry , waste management , bacteria , inorganic chemistry , biology , engineering , genetics
Alkalilignin samples obtained from untreated paper‐mill effluent and effluent decolorized by Streptomyces UAH 30 and Streptomyces UAH 51 were analyzed by pyrolysis/gas chromatography/mass spectrometry. The molecular composition of the samples and the chemical modifications occurring in the lignin units were studied in order to know the mechanism of decolorization carried out by these microorganisms. The pyrolysis data showed a notable reduction in the lignin pyrolysis products of alkalilignins in effluent decolorized by Streptomyces strains. Moreover, chemical modifications, such as oxidation and shortening of the side chain of the phenyl–propyl moieties of lignin were also detected.