We develop quantitative optimization criteria for transient digestion processes in simple animal tracts that can be modeled by a semi-batch reactor or plug flow reactor. Specifically, we determine the residence time that optimizes the average net energy intake over the total residence time. The net energy is measured by the total energy intake, less the cost of foraging and digestion. Precise v...

Coagulation of milk in the stomach is first crucial step its digestion. Using a human gastric simulator, dynamic digestion goat and sheep skim were compared with that cow milk, focusing particularly on their physical characteristics. The contents analyzed for changes dry matter microstructure, extent protein study revealed from all species formed curd within 15 min digestion, at which time pH w...

Anaerobic digestion technology can play a significant role in the transition to low-carbon and circular economy by producing bioenergy (biomethane) organic fertilizer (digestate). This study proposes valorization approach for three waste streams widely produced Mediterranean area: fish (FW), pig slurry (PS), orange pomace (OP). The FW lipid content enhance biomethane yield as long inhibition lo...

BACKGROUND The use of Duddingtonia flagrans as a tool for the biological control of gastrointestinal nematodes (GIN) is a promising alternative to anthelmintics. The chlamydospores of D. flagrans are orally dosed and their thick cell wall gives them the capacity to resist digestion and pass through the gastrointestinal tract (GIT). Chlamydospores reaching the faeces are able to germinate and tr...

background & aims of the study: sarcocystiosis is a zoonosis appeared in domestic animals caused by various species of sarcocystis. this protozoan disease has worldwide distribution among human and many species of animals. humans acquire infection by eating of raw and under cooked beef, pork or mincemeat containing schizonts of sarcocystis hominis and s. suihominis. the aim of present study is ...

anaerobic digestion is a feasible technology to stabilize the solid waste generated inslaughterhouses obtaining significant quantities of biogas, considered as a clean and renewable fuel. this iswhy it is important to optimize the digestion process in order to eliminate organic matter and maximize theproduction of biogas. in this work, a system was developed for treating slaughterhouse solid wa...

leptinotarsa decemlineata (say) and lasioderma serricorne f. are destructive pre-harvest and post-harvest pests of many plants in the family solanaceae, and stored foodstuffs and non-food items, respectively. in this study, some biochemical characteristics of cellulase in the larval digestive tract of these pests were studied. endo-β-1, 4-glucanase activity was measured against the substrate ca...

a study of the biokinetics of anaerobic digestion of municipal solid waste (msw) was carried out using anaerobic batch digester. from the experimental results, the kinetic parameters (coefficient values) of the digestion of the msw were determined. the maximum rate of substrate utilization (k), saturation constant (ks), endogenous decay coefficient (kd), biomass yield or microbial growth yield ...

1. Evidence has been found that Northrop's phenomenon (so called by us) is produced in the digestion of casein or hemoglobin brought about by trypsin, papain, and pepsin either crude or crystalline in the presence of gelatin. 2. Anson's and Kunitz' methods permit the measure of proteolytic activity of any protease on casein or hemoglobin substrate in the presence of gelatin, even in very small ...