Biologically produced acid precipitable polymeric lignin
Abstract
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.
- Inventors:
-
- Moscow, ID
- (Moscow, ID)
- Issue Date:
- Research Org.:
- Univ. of Iowa, Iowa City, IA (United States)
- OSTI Identifier:
- 865212
- Patent Number(s):
- 4478747
- Assignee:
- Genetics International, Inc. (Boston, MA)
- Patent Classifications (CPCs):
-
C - CHEMISTRY C08 - ORGANIC MACROMOLECULAR COMPOUNDS C08H - DERIVATIVES OF NATURAL MACROMOLECULAR COMPOUNDS
- DOE Contract Number:
- AS07-80ER10775
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- biologically; produced; acid; precipitable; polymeric; lignin; water; soluble; degraded; appl; molecular; weight; 12; 000; daltons; comprising; percentage; total; times; phenolic; hydroxyl; carboxylic; native; modified; chemical; oxidation; reduction; increase; content; reduce; antioxidant; inhibitory; chains; improving; properties; phenolic hydroxyl; water soluble; molecular weight; carboxylic acid; total weight; chemical oxidation; precipitable polymeric; acid precipitable; /435/530/
Citation Formats
Crawford, Don L, and Pometto, III, Anthony L. Biologically produced acid precipitable polymeric lignin. United States: N. p., 1984.
Web.
Crawford, Don L, & Pometto, III, Anthony L. Biologically produced acid precipitable polymeric lignin. United States.
Crawford, Don L, and Pometto, III, Anthony L. Sun .
"Biologically produced acid precipitable polymeric lignin". United States. https://www.osti.gov/servlets/purl/865212.
@article{osti_865212,
title = {Biologically produced acid precipitable polymeric lignin},
author = {Crawford, Don L and Pometto, III, Anthony L.},
abstractNote = {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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Sun Jan 01 00:00:00 EST 1984},
month = {Sun Jan 01 00:00:00 EST 1984}
}
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