background and objectives: microbial caffeine removal is a green solution for treatment of caffeinated products and agro-industrial effluents. we directed this investigation to optimizing a bio-decaffeination process with growing cultures of pseudomonas pseudoalcaligenes through taguchi methodology which is a structured statistical approach that can be lowered variations in a process through de...

the aim of the present study was to assess the bio-trickling filter startup for the treatment ofwastewater produced by pegah dairy company at psychrophilic condition. the startup time of a bio-tricklingfilter is directly proportional to the concentration of microbial population. abio-trickling column with a height of150 cm was packed with lava rocks with the liquid recirculated through the pack...

This work aimed to improve yerba mate caffeine extraction process, considering three independent variables, carbon dioxide flow, ethanol flow and time, in levels. The following process parameters were kept constant: pressure (300 bar), temperature (60 °C), particle size (0.428 mm). Box-Behnken experimental design was carried out for 15 extractions the optimized condition obtain decaffeinated as...

In this study, we wanted to understand the impact of different decaffeination processes on aroma compounds coffee. Therefore, analyzed differences in physical characteristics and volatile profiles regular coffee (RC), Swiss water process decaffeinated (SWDC), supercritical CO2 (SCDC) after roasting beans. The electronic nose analysis identified RC SCDC as groups which indicates that these compo...

statement of problem: the guided bone regeneration (gbr) technique does not always produce consistent results. bone filling within the space provided by the membrane can be incomplete. purpose: the aim of this study was to evaluate the effect of a collagen membrane (bio-gide) in combination with or without deproteinezed bovine bone mineral (bio-oss) on the healing of calvarial defects in rabbit...