The efficiency of ammonia removal from fresh source-segregated domestic food waste digestate using biogas as a stripping agent was studied in batch experiments at 35, 55 and 70°C, at gas flow rates of 0.125 and 0.250Lbiogasmin(-1)L(-1)digestate with and without pH adjustment. Higher temperatures and alkaline conditions were required for effective ammonia removal, and at 35°C with or without pH ...

Kitchen wastes containing high amounts of carbohydrates have potential as low-cost substrates for fermentable sugar production. In this study, enzymatic saccharification of kitchen waste was carried out. Response surface methodology (RSM) was applied to optimize the enzymatic saccharification conditions of kitchen waste. This paper presents analysis of RSM in a predictive model of the combined ...

Changes in the foaming properties of whey proteins concentrate (WPC) subjected to enzymatic hydrolysis were studied. Activity and stability of the foam generated from the enzymatic hydrolysis of WPC with two proteases: Trypsin from porcine pancreas (analytical quality) and Alcalase 2.4 L FG (Alcalase) (commercial food grade) were analyzed. WPC solution at concentration 100 mg/mL in 50 mM phosph...

BACKGROUND During cellulosic ethanol production, cellulose hydrolysis is achieved by synergistic action of cellulase enzyme complex consisting of multiple enzymes with different mode of actions. Enzymatic hydrolysis of cellulose is one of the bottlenecks in the commercialization of the process due to low hydrolysis rates and high cost of enzymes. A robust hydrolysis model that can predict hydro...

In order to protect the environment and cellulose resources, yarn wastes from textile industry, which contains a considerable amount of cellulose, can be used produce microcrystalline cellulose. this study, waste was milled via ball mill subjected acid hydrolysis using sulfuric hydrochloric at different times. It characterized through various tests determine particle size, degree polymerization...

Abstract This paper discusses the effect of hydrolytic pretreatments on pulp dissolution in aqueous NaOH–ZnO solvent system. Eight samples were studied. They consisted a never-dried softwood kraft that was hydrolyzed under seven different conditions as well without hydrolysis reference. The pulps evaluated both at macro level molecular based their reactivity with 4-acetamido-2,2,6,6-tetramethyl...

The fishing industry is often targeted as a producer of organic streams with low economic value. Biotechnological approaches can play crucial role in transforming and adding value to these for their further use upcycle. In this study, Atlantic codfish ( Gadus morhua ) frames, were subjected Alcalase hydrolysis, whose optimal conditions first fine-tuned established follows: 56.8 °C, pH 8.35, [Al...

African yam bean (Spenostylis stenocarpa) protein isolate was hydrolyzed with pancreatin (was purchased from sigma chemicals, St Loius Missouri, USA) to obtain an hydrolysate that has (42% degree of hydrolysis), which was characterized for its amino acid composition and ability to scavenge free radicals. The African yam bean protein isolate and hydrolysate samples were dried to constant weight,...

Itaconic acid is commercially produced by the cultivation of Aspergillus terreus using starch hydrolysate as carbon source. The degree of hydrolysis had a great influence on itaconic acid production which was suitable when corn starch was saccharified at 35 DE. The α-amylase was sufficient to drive the starch hydrolysis to the degree. The agar plate assay with LiCl treatment provided a rapid, s...