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Biologically produced acid precipitable polymeric lignin

Patent ·
OSTI ID:865212
;

A water soluble, acid precipitable polymeric degraded lignin (APPL), having a molecular weight of at least 12,000 daltons, and comprising, by percentage of total weight, at least three times the number of phenolic hydroxyl groups and carboxylic acid groups present in native lignin. The APPL may be modified by chemical oxidation and reduction to increase its phenolic hydroxyl content and reduce the number of its antioxidant inhibitory side chains, thereby improving antioxidant properties.

Research Organization:
Univ. of Idaho, Moscow, ID (United States); Genetics International, Inc., Boston, MA (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
AS07-80ER10775
Assignee:
Genetics International, Inc. (Boston, MA)
Patent Number(s):
4,478,747
Application Number:
06/493,024
OSTI ID:
865212
Country of Publication:
United States
Language:
English

References (7)

Degradation of Softwood, Hardwood, and Grass Lignocelluloses by Two Streptomyces Strains journal August 1981
Antioxidant properties of synthetic 5-hydroxy-1,3-benzodioxole derivatives journal July 1982
Lignin Degradation by Streptomyces viridosporus: Isolation and Characterization of a New Polymeric Lignin Degradation Intermediate † journal January 1983
Lignocellulose decomposition by selected streptomyces strains. journal January 1978
Methoxy-deficient Structural Elements in Lignin of Sweetgum Decayed by a Brown-rot Fungus. journal January 1970
A Simple Modification of the Wolff-Kishner Reduction journal December 1946
Microbial degradation of lignin journal January 1980

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