Introduction Ingested lipids could offer valuable opportunities for enabling oral drug delivery, as approximately 4070% of all new drug candidates have been estimated to have very poor water solubility and are expected to exhibit low bioavailability when orally dosed. For this class of drug molecules, whose dissolution in water is likely the limiting step of overall oral absorption, the influen...

Anaerobic digestion (AD) is a biological treatment susceptible to temperature variations. The Arrhenius model and the Van´t Hoff-Arrhenius relationship analyze effect in AD first-order kinetic constant (k). Kinetic data relevant for estimating hydraulic retention time (HRT) continuous reactors. This research aimed evaluate behavior of constants concerning using influence as estimators HRT. eval...

The feasibility of biogas stripping to remove ammonia in the anaerobic digestion of source segregated food waste was investigated. It was found in batch experiments that ammonia could be removed from digestate and that the removal followed 1 order kinetics with respect to total ammonia nitrogen concentration. Increasing temperature, biogas flow rate and initial pH all increased removal rates. U...

An automatic in vitro gas production technique was evaluated for predicting in vivo fiber (NDF) digestibility and effective first-order digestion rate of potentially digestible NDF (pdNDF) of 15 grass silages. Observed in vivo NDF digestibility of the silages harvested at different stages of maturity during 3 yr was determined by the total fecal collection in sheep fed at the maintenance level ...

A fluorometric assay for pepsin and pepsinogen was developed using enhanced green fluorescent protein (EGFP) as a substrate. Acid denaturation of EGFP resulted in a complete loss of fluorescence that was completely reversible on neutralization. In the proteolytic assay procedure, acid-denatured EGFP was digested by pepsin or activated pepsinogen. After neutralization, the remaining amount of un...

Current mechanistic anaerobic digestion (AD) models cannot accurately represent the underlying processes occurring during food waste (FW) AD. This work presents an update of Anaerobic Digestion Model no. 1 (ADM1) to provide accurate estimations free ammonia concentrations and related inhibition thresholds, model syntrophic acetate oxidation as acetate-consuming pathway. A modified Davies equati...

Kinetic study for different start up conditions of the anaerobic digestion of wastewater derived from the sago processing from tubers of tapioca (Mannihot utillisema) is discussed. The experiment is carried out with synthetic waste water using a tapered fluidized bed reactor. Mesoporous granulated activated carbon is used as a bacterial support. The kinetic model follows half order kinetics for...