The Iignin-degrading enzyme system of white-rot fungi, which are mostly basidiomycetes, has been studied intensively in recent years. The extracellular component of the system is comprised of Iignin peroxidase, manganese peroxidase, glyoxal oxidase and certain metabolites. Lignin is fragmented by this system, and the plethora of degradation products taken up by the hyphae and further metabolize...

Purpose: To explore the hypotensive activity and chemical composition of Moringa oleifera Lam (Moringaceae) roots. Methods: The fresh roots of M. oleifera was cut into small pieces and successively extracted with petroleum ether (PE) and dichloromethane (DC). PE extract was further divided into MRP and MRP -1. DC extract showed a thick mass during evaporation which was separated as MRDC IN. The...

Petroleum heavy vacuum gas oil (HVGO) containing 10 wt.% of petroleum wax was hydrocracked at 390–430 °C and under the pressure 18 MPa over a Ni W/amorphous silica-alumina catalyst in continuous-flow fixed-bed reactor. The hydrocracking reference feed (neat HVGO) carried out same reaction conditions. physico-chemical properties primary products obtained via laboratory atmospheric-vacuum distill...

High oxygen content and ultracomplex composition are the biggest property characteristics of coal tar, which is also reason for difficulty tar separation processing. The distribution oxygen-containing compounds (OCs) asphaltene island/archipelago structure play a key role in solubility hydrogenation thermal conversion tar. In this study, OCs medium low temperature (MLCT) its subfractions were i...

Abstract. Photooxidation of volatile organic compounds (VOCs) produces condensable oxidized organics (COOs) to yield secondary aerosol (SOA), but the fundamental chemical mechanism for gas-to-particle conversion remains uncertain. Here we elucidate production COOs and their roles in SOA brown carbon (BrC) formation from m-xylene oxidation by simultaneously monitoring evolution gas-phase product...

A total of 331 different VOCs and fixed gases from swine facilities in North Carolina were identified by gas chromatography and mass spectrometry (GCIMS). Ofthese, 203 were found in air samples adsorbed ontoTenax®, 112 were found in air samples adsorbed onto cotton material, and 167 different compounds were identified in the lagoon samples. The compounds identified were diverse, and included ma...

Non-covalent interactions of aromatics are important in a wide range of chemical and biological applications. The past two decades have seen numerous reports of arene-arene binding being understood in terms Hammett substituent constants, and similar analyses have recently been extended to cation-arene and anion-arene binding. It is not immediately clear why electrostatic Hammett parameters shou...

Introduction Our earlier investigations demonstrated that formation of hydrocarbons such as polychlorinated dibenzo-p-dioxins (PCDDs), dibenzofurans (PCDFs), polycyclic aromatic hydrocarbons (PAHs), popychlorophenols (PCPhs) and polychlorobenzenes (PCBzs) and their toxic equivalent quantity (TEQ) with dioxin-free flyash and unburnt hydrocarbon with varied temperatures as well as different hydro...

This study reviews waste water characterization of iron and steel industry and treatment procedures involved in these industries. The production of iron from its ores involves powerful reduction reaction in blast furnaces. Cooling waters are inevitably contaminated with products especially ammonia and cyanide. Production of coke from coal in coking plants also requires water cooling and the use...

Cholesteryl ester transfer protein (CETP) has been identified as a potential target for cardiovascular disease (CVD) for its important role in the reverse cholesteryl transfer (RCT) process. In our previous work, compound 5 was discovered as a moderate CETP inhibitor. The replacement of the amide linker by heterocyclic aromatics and then a series of N,N-substituted-4-arylthiazole-2-methylamine ...