HEMICELLULOSE BIOCONVERSION TO POLYANIONIC HETEROPOLYSACCHARIDES

被引:4
|
作者
TANENBAUM, SW [1 ]
FISHER, PJ [1 ]
HENWOOD, A [1 ]
NOVAK, J [1 ]
SCOTT, B [1 ]
NAKAS, JP [1 ]
机构
[1] SUNY COLL ENVIRONM SCI & FORESTRY, DEPT FOREST BIOL, SYRACUSE, NY 13210 USA
关键词
HEMICELLULOSE UTILIZATION; ANIONIC EXTRACELLULAR POLYSACCHARIDES; PENTOSE BIOCONVERSIONS; VISCOELASTIC PROPERTIES;
D O I
10.1007/BF02920541
中图分类号
Q5 [生物化学]; Q7 [分子生物学];
学科分类号
071010 ; 081704 ;
摘要
Anionic polysaccharides, traditionally obtained from plant or algal sources, have a variety of commercial uses. Such gums from microorganisms have received increased recent interest. We have initiated a program to investigate the bioconversion of pentosans to rheologically useful anionic extracellular polysaccharides (AEPS). A number of earlier-described species, including Cryptococcus laurentii, Klebsiella pneumoniae, Arthrobacter viscosus, and Pseudomonas ATCC 31260, appear to have potential in this regard. These organisms can individually convert either xylose, enzymatic oligomeric hemicellulose digests, dilute mineral acid hemicellulose ("TVA") hydrolysates, or a five-monosaccharide mixture simulating sulfite process liquors to AEPS. The formation parameters, compositions, mol-wt distributions, and the intrinsic viscosities of these purified AEPS are exemplified. Substitution of pentose as the major substrate for glucose can result in changes in mol-wt distribution or in the percentage of noncarbohydrate substituents in some AEPS. Pursuit of these observations may lead to interesting structure-property relationships and toward rheological applications for pentosan-derived AEPS.
引用
收藏
页码:135 / 148
页数:14
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