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This work aimed to develop a green protocol for chemical processing of spent aromatic biomass to obtain xylose, levulinic acid, and lignin in good yields via treatment with p-cymene-2-sulphonic acid (p-CSA), a Brønsted acid synthesised from d-limonene as a renewable feedstock from citrus waste. Chemical processing of palmarosa biomass with p-CSA under heating in an autoclave resulted in hydrolysate containing xylose (~16% yield). Further processing of pre-treated biomass with p-CSA in presence of aq. HCl under refluxing caused a selective degradation of cellulose to levulinic acid (~22% yield with respect to biomass). The residual biomass was used to afford lignin in good yields.
This article was published in the following journal.
Name: Bioresource technology
Levulinic acid wastewater containing high concentration of sulfate was generated while producing levulinic acid by straw depolymerization with dilute sulfuric acid. In this study, levulinic acid waste...
The present work aimed to investigate and optimize the selective exploitation of hemicellulose and cellulose fractions of the energy crop Arundo donax L. (giant reed), to give xylose and levulinic aci...
Plants used for phytoremediation of contaminated soil often enrich in certain metals present in the soil. However, the role of the inherent metal content of the plants on their recycling by hydrotherm...
Spent coffee grounds (SCG) generated after coffee extraction are the main byproduct of the coffee industry. Valorization of the SCG has been increasingly focused following considerable attention in co...
Rhodococcus sp. YHY01 was studied to utilize various lignin derived aromatic compounds. It was able to utilize p-coumaric acid, cresol, and 2,6 dimethoxyphenol and resulted in biomass production i.e. ...
Phenylalanine and tyrosine are aromatic amino acids that people need to obtain in their diets. Amino acids are the building blocks for protein, are are therefore required to form tissues i...
This research may explain whether a shortage of three special compounds called aromatic amino acids is responsible for the severe illness and high death rate of children with the kwashiork...
This clinical trial expansion is to offer patients, who are not enrolled into the Phase I/II trial, a chance of treatment, to extend the experience in this gene therapy, and to increase th...
Aim: To investigate whether patients with pulmonary hypertension have reduced absorption capacity compared to COPD patients without cor pulmonale potentially due to venous obstruction in t...
The present study determined the effect of Xylose consumption on postprandial hyperglycemia in normal (n=25) and hyperglycemic subjects (n=50).
The most abundant natural aromatic organic polymer found in all vascular plants. Lignin together with cellulose and hemicellulose are the major cell wall components of the fibers of all wood and grass species. Lignin is composed of coniferyl, p-coumaryl, and sinapyl alcohols in varying ratios in different plant species. (From Merck Index, 11th ed)
Keto acids that are derivatives of 4-oxopentanoic acids (levulinic acid).
Compounds and drugs that block or inhibit the enzymatic action of AROMATIC AMINO ACID DECARBOXYLASES. Pharmaceutical agents in this category are used in conjunction with LEVODOPA in order to slow its metabolism.
A copper-containing oxidoreductase enzyme that catalyzes the oxidation of 4-benzenediol to 4-benzosemiquinone. It also has activity towards a variety of O-quinols and P-quinols. It primarily found in FUNGI and is involved in LIGNIN degradation, pigment biosynthesis and detoxification of lignin-derived products.
The decarboxylation product of UDPglucuronic acid, which is used for formation of the xylosides of seryl hydroxyl groups in mucoprotein synthesis. Also forms plant xylans.