Open AccessFeatures of processing the biomass of genus Miscanthus plants into carbohydrate-containing substrates for biotechnology
Author(s) -
Olga Krieger,
Vyacheslav Dolganyuk,
A Yu Prosekov,
A V Izgaryshev,
Станислав Сухих
Publication year - 2021
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/699/1/012056
Subject(s) - lignin , xylose , cellulose , miscanthus , monosaccharide , biomass (ecology) , chemistry , pulp (tooth) , hemicellulose , sulfuric acid , raw material , food science , yield (engineering) , chemical composition , botany , agronomy , organic chemistry , bioenergy , fermentation , microbiology and biotechnology , biology , biofuel , materials science , medicine , pathology , metallurgy
The article presents the characteristics of the chemical composition of the biomass of genus Miscanthus plants and the features of its use for the production of carbohydrate-containing substrates for biotechnology. It is shown that the Chinese mycanthus “Ferner Osten” is not characterized by a high content of lipidic and protein compounds. The herbaceous plant is rich in cellulose, lignin and fiber. To achieve the maximum conversion of the miscantus biomass, a preliminary chemical treatment with dilute sulfuric acid was performed. The optimal temperature for pretreatment of miscanthus biomass with 1% sulfuric acid solution is 130 °C with a process duration of 30 minutes. With an increase in temperature exposure, the yield of cellulose decreases markedly. Thus, when the temperature rises to 140°C and the process lasts 30 minutes, the pulp yield decreases by 31.38 %. With an increase in the duration of chemical treatment from 30 to 60 minutes, the pulp yield decreases from 79.07% to 61.08%. The residues of oligosaccharides and lignin were determined in the chemical hydrolysates of Miscanthus sinensis “Ferner Osten”. Among monosaccharides, glucose and xylose predominate, 40.5 and 24.4% of the dry matter, respectively. To increase the yield of sugars, it is planned to carry out two-stage processing.