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Characterisation and enzymatic hydrolysis of nettle ( Urtica dioica L) deproteinated biomass
Author(s) -
de Leo Pietro,
Miceli Antonio,
Antonaci Carmen,
Vigna Grazia
Publication year - 1993
Publication title -
journal of the science of food and agriculture
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.782
H-Index - 142
eISSN - 1097-0010
pISSN - 0022-5142
DOI - 10.1002/jsfa.2740630404
Subject(s) - hemicellulose , urtica dioica , chemistry , cellulose , hydrolysis , pectin , biomass (ecology) , enzymatic hydrolysis , fermentation , lignin , food science , polysaccharide , starch , cellulase , biochemistry , botany , biology , organic chemistry , agronomy
Non‐starch polysaccharides (NSP) were obtained from deproteinated nettle biomass and characterised for pectin, hemicellulose and cellulose content. The nettle deproteinated biomass (NDB) represents 52·4% (w/w) of the dry nettle biomass and contains 695·5 g kg −1 NSP. The pectin, hemicellulose and cellulose amounts are 196·7, 334·5 and 128·5 g kg −1 , respectively. The high content of pectins and hemicelluloses may make the NDB an important source of dietary fibre. The NSP were hydrolysed by crude enzymatic preparations and both their biodegradability and the amount of simple sugars released have been determined. In the best conditions more than 40% of the NSP were hydrolysed with a considerable increase of sugars. These enzymatic treatments could be used to improve the feed digestibility of the biomass or to obtain bioenergetic compounds by fermentation of the hydrolysed sugars.