Showing papers in "Process Biochemistry in 2000"

TL;DR: SSF processes offer potential advantages in bioremediation and biological detoxification of hazardous and toxic compounds and appear to be a promising one for the production of value-added ‘low volume-high cost’ products such as biopharmaceuticals.

TL;DR: In this paper, the biosorption of Remazol Black B, a vinyl sulphone type reactive dye, from aqueous solutions on dried Rhizopus arrhizus was studied in a batch system with respect to the temperature, initial pH and initial dye concentration.

TL;DR: In this paper, the authors investigated the sorption of cadmium and lead from aqueous solutions by spent grain, a byproduct of the brewing process, and the effects of solution pH, ionic strength, initial concentration, ligands and temperature were studied in batch experiments.

TL;DR: In this article, factorial design and response surface techniques were used in combination with modeling and simulation to design and optimize an industrial bioprocess with multiple stages, where the fermentation system is composed of four ideal continuous-stirred tank reactors (ICSTR), linked in series, with cell recycling.

TL;DR: A gram negative hydrogen producing facultative anaerobe was isolated and characterized as Enterobacter cloacae IIT-BT 08 and found to differ from each other particularly beyond the pH of 4.8.

TL;DR: In this paper, the authors focus on the advances in understanding that have come from this modeling work, and the insights it has given us into bioreactor design, operation and scale-up.

TL;DR: Three polyphenolic fractions isolated by ultrafiltration of crude OMW and characterized by GC/MS and gel filtration analysis showed that at the same hydraulic retention time, the F1 fraction was bioconverted into methane at high yield while F3 fraction was poorly biodegraded.

TL;DR: The capability and kinetic behaviour of several fungi to deal with such a waste reducing the phenol content of OMW was studied and the removal of total phenols relative to the total organic load consumed might indicate a measure of the selectivity with which the microorganisms remove phenols among other organic compounds present.

TL;DR: The accumulation of TOC in the supernatant of the bioreactor and its degradation after 5 months of operation proved to be inhibitory towards the metabolic activity of the activated sludge, as well as contributing to the poor membrane permeability of the mixed liquor.

TL;DR: In this paper, the degradation abilities of α-amylase from Bacillus amyloliquefaciens and βamylases from Bacillon cereus and soybean on raw starch granules from various botanical sources (potato, sweet potato, wheat, rice and corn) were examined by scanning electron microscopy.

TL;DR: Nitrate-reducing bacterial strains isolated from petroleum-contaminated soil were capable of degrading petroleum hydrocarbons under aerobic and anaerobic conditions, including up to 90–95% of all alkanes analyzed.

TL;DR: The stability of sonified ADH was decreased with time when compared with unsonified controls, and the forces involved in the fluid must have a significant role to play in the inactivation process.

TL;DR: The overall productivity for the lipase which depended more strongly on agitation than aeration could be related to the volumetric oxygen transfer coefficient, k L a, which resulted in higher lipase production.

TL;DR: An efficient fermentation medium producing a colourless product with high yields has been developed for the production of recombinant hirudin from Saccharomyces cerevisiae using response surface methodology to optimize the medium constituents.

TL;DR: The results indicated that OMWW could be treated anaerobically with high efficiencies and treatment of 1 l olive mill waste waters by anaerobic methods resulted in production of 57.1±1.5 l of methane gas.

TL;DR: In this paper, the kinetics and equilibrium of chromium sorption onto chitin were studied with respect to pH, particle size, initial metal ion concentration, sorbent concentration and stirring rate.

TL;DR: In this article, an effect of plasticizers on physical properties and biodegradation characteristics of polyhydroxybutyrate (PHB) based films have been investigated and the dominant PHBdegrading soil microorganisms isolated from the tested PHB-based films were identified.

TL;DR: In this article, the ACE inhibitory peptides from bovine plasma proteins were extracted by enzymic hydrolysis with several proteases available for industrial use and compared with tryptic hydrolysate of casein considering the practical production of a functional food material in industry.

TL;DR: The RBC treated effluent was found to be safe for discharge in the environment as confirmed by chemical analysis and fish bioassay studies and metal precipitates obtained during metal-cyanide biodegradation were identified as metal-hydroxides.

TL;DR: In this article, the effect of veratryl alcohol and yeast extract concentration, time of cultivation and agitation speed were evaluated by factorial analysis to select variables for optimizing the production of laccases.

TL;DR: The enzyme has good potential for the hydrolysis of vegetable oils, which are industrially and economically important for the production of biodiesel, and is regarded as a partial glyceride hydrolase.

TL;DR: The immobilised enzyme system displayed a promising half-life of more than 150 h for oxidation of syringaldazine and it was confirmed that the type and/or the position of substituent group affect the level of substrate oxidation.

TL;DR: The chitinolytic enzyme complex produced by the Gram-positive bacterium Streptomyces kurssanovii was immobilized on macroporous cross-linked chitin by physical adsorption, and the biocatalyst obtained used for the preparation of acid-free-water soluble chitosan with a molecular weight of 2–9 kDa starting from commercial crab chitan by two-step hydrolysis.

TL;DR: In this paper, a hybrid biological reactor which contained both suspended-and attached-growth biomass was developed by introducing porous materials into a regular activated sludge unit and used for the treatment of domestic wastewater.

TL;DR: Stimulating phenolic synthesis through low pH treatment supports the hypothesis that acid-induced cell growth and elongation may be regulated through the pentose-phosphate pathway.

TL;DR: In this paper, the authors used Ceratocystis fimbriata for flavour production, on steam-treated coffee husk supplemented with glucose, and reported a strong pineapple odour and 6.58 and 5.24 mmol/l per gram total volatiles (TV), respectively.

TL;DR: Although further work is needed to identify what microorganisms are responsible for the beneficial properties of Bulgarian boza these results could form the basis for the improvement of product quality and consistency and could also be used to develop new cereal-based foods in Western Europe.

TL;DR: In this article, the outer covering of seeds of Celastrus paniculatus (MG-cp-2) was used to produce an alkaline and thermostable polygalacturonase in minimal and enriched media, supplemented with 1% (w/v) citrus pectin in submerged fermentation.

TL;DR: In this paper, the authors compared four commercially available alkaline proteases (Alcalase 2.4L, Flavourzyme 1000L, Corolase PN-L and 7089) on salmon muscle mince.

TL;DR: In this paper, the authors used fruit-processing wastes including apple pomace, cranberry pomaces and strawberry pomsace as substrates for polygalacturonase (PG) production by Lentinus edodes through solid-state fermentation.