Methanolic extracts of rice hulls with or without far infrared (FIR) irradiation were sequentially fractionated with solvents (hexane, chloroform, ethyl acetate, butanol, and water), and antioxidant activities of the fractions were analyzed for total phenol contents (TPC), 1,1-diphenyl-2-picrylhydrazyl (DPPH) radical-scavenging capability, reducing power, and antioxidant potency. Yield of chlor...

in the chemical industry, process intensification is needed to meet important goals such as sustainable and eco-friendly processes. for esterification reaction the “produce more with less pollution” objective can be achieved by coupling reaction and separation in a so called integrated process. in this work a model for describing the esterification reaction of ethyl acetate in pervaporation mem...

butyl-hydroxytoluene (bht) is one of the major synthetic antioxidants with a wide range usage. replacement of artificial antioxidants with natural antioxidants is highly considered. in this research, the antioxidant activity of juniperus excelsa was investigated by using reducing power, dpph radical scavenging and inhibition of lipid peroxidation. also, the amounts of phenolic and flavonoid com...

The thermal stability of a series of dialkylimidazolium carboxylate ionic liquids has been investigated using a broad range of experimental and computational techniques. Ionic liquids incorporating fluoroalkyl carboxylate anions were found to have profoundly differing thermal stabilities and decomposition mechanisms compared with their non-fluorinated analogues. 1-Ethyl-3-methylimidazolium acet...