Kalinoski, Ryan M. published the artcileAntimicrobial Properties of Corn Stover Lignin Fractions Derived from Catalytic Transfer Hydrogenolysis in Supercritical Ethanol with a Ru/C Catalyst, HPLC of Formula: 645-56-7, the publication is ACS Sustainable Chemistry & Engineering (2020), 8(50), 18455-18467, database is CAplus.
Converting lignin to value added products at high yields provides an avenue for making ethanol biorefineries more profitable while reducing the carbon footprint of products generally derived from petroleum. In this study, corn stover lignin was depolymerized by catalytic transfer hydrogenolysis (CTH) in supercritical ethanol with a Ru/C catalyst. The lignin derived bio-oil was then sequentially extracted utilizing hexane, petroleum ether, chloroform and Et acetate as solvents in order of less polar to polar and the subsequent bio-oils were characterized using GPC, GC/MS and HSQC NMR. Results show lignin derived compounds were sequentially extracted into groups depending on the solvent polarity. Antimicrobial properties of the bio-oils were screened against Gram-pos. (Bacillus subtilis, Lactobacillus amylovorus, and Staphylococcus epidermidis), Gram-neg. (Escherichia coli) bacteria and yeast (Saccharomyces cerevisiae) by examining microbial growth inhibition. Results show that CTH derived bio-oils inhibited all tested organisms at concentrations less than 3 mg/mL. Total monomer concentration and the presence of specific monomers (i.e., syringyl propane) showed correlations to antimicrobial activity, likely due to cell death or membrane damage. This study provides insights into using sequential extraction to fractionate lignin-derived compounds and correlations between the properties of the extracted compounds and their antimicrobial activity. A lignin-based bio-oil was prepared from catalytic transfer hydrogenolysis of purified corn stover lignin with ethanol and a ruthenium on carbon catalyst. Polar and nonpolar solvents were used to sequentially extract different compounds The raw bio-oil and sequential extraction fractions exhibited antimicrobial properties against Gram-pos./neg. bacteria and yeast, with activity related to total monomer content and specific monomers.
ACS Sustainable Chemistry & Engineering published new progress about 645-56-7. 645-56-7 belongs to alcohols-buliding-blocks, auxiliary class Liquid Crystal &OLED Materials, name is 4-Propylphenol, and the molecular formula is C9H12O, HPLC of Formula: 645-56-7.
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