نتایج جستجو برای: Oxygen Transfer Rate

تعداد نتایج: 1394433  

Journal: :applied food biotechnology 0
shafieh mansoori department of life science engineering, faculty of new sciences and technologies, university of tehran, tehran, iran. fatemeh yazdian department of life science engineering, faculty of new sciences and technologies, university of tehran, tehran, iran. majid azizi department of horticulture, college of agriculture, ferdowsi university of mashhad, mashhad, iran. mojgan sheikhpour department of life science engineering, faculty of new sciences and technologies, university of tehran, tehran, iran. gassem amoabediny research center for new technologies in life science engineering, university of tehran, tehran, iran. javad hamedi department of chemical engineering, faculty of engineering, university of tehran, tehran, iran.

monascus purpureus is a fungus that had been cultured on the rice in eastern asian countries since thousands years ago and used as a food for long years. the fungus produces very valuable metabolites with polyketide structure. the most important metabolite is monacolin k, lovastatin or competitive inhibitor of 3-hydroxy-3-methylglutaryl-coenzyme a reductase (an affective enzyme in cholesterol s...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تحصیلات تکمیلی علوم پایه زنجان - دانشکده شیمی 1391

in this thesis a calibration transfer method is used to achieve bilinearity for augmented first order kinetic data. first, the proposed method is investigated using simulated data and next the concept is applied to experimental data. the experimental data consists of spectroscopic monitoring of the first order degradation reaction of carbaryl. this component is used for control of pests in frui...

A scale-up design procedure, based on a new physical mass transfer (PMT) model, whichdescribes the performance, for aerobic rotating biological contactors (RBC’s) is developed. This scale-up procedure can be used to determine the disc surface area needed to prevent an oxygen limitation or to obtain a specific degree of treatment. In contrast to the empirical, and most previous RBC performance m...

Journal: :Biotechnology and bioengineering 2003
David R Nielsen Andrew J Daugulis P James McLellan

An empirical correlation, based on conventional forms, has been developed to represent the oxygen mass transfer coefficient as a function of operating conditions and organic fraction in two-phase, aqueous-organic dispersions. Such dispersions are characteristic of two-phase partitioning bioreactors, which have found increasing application for the biodegradation of toxic substrates. In this work...

2013
Sarah Fish

The aim of this work was to investigate the effect of oxygen limitation on whole­ cell oxygenases, and to determine how the physiochemical properties of oils affect their ability to enhance the oxygen transfer rate. Whole-cell oxygenase biocatalysts require oxygen as a substrate for the reaction and for the electron transport chain. The productivity of these bioconversions is therefore influenc...

Journal: :international journal of environmental research 2012
s. jokari h. rashedi g.h. amoabediny f. yazdian m. rezvani

recently, the production of biosurfactants in bioreactors and their use in various pharmaceutical,chemical and food industries have been developed. optimum production is directly related to the physicochemicalcondition of culture medium (such as ph and temperature) and engineering parameters of bioreactors (such asaeration rate, volume of operation and the amount of energy input). understanding...

Journal: :international journal of environmental research 0
s. jokari department of chemical engineering, faculty of engineering, university of tehran, p.o. box 11155-4563,tehran, iran. research center for new technologies in life science engineering, university of tehran, p.o. box 63894-14179, tehran, iran h. rashedi department of chemical engineering, faculty of engineering, university of tehran, p.o. box 11155-4563,tehran, iran. research center for new technologies in life science engineering, university of tehran, p.o. box 63894-14179, tehran, iran g.h. amoabediny department of chemical engineering, faculty of engineering, university of tehran, p.o. box 11155-4563,tehran, iran. research center for new technologies in life science engineering, university of tehran, p.o. box 63894-14179, tehran, iran f. yazdian department of life science engineering, faculty of interdisciplinary new sciences and technologies, university of tehran, p.o. box 14395-1561,tehran, iran. m. rezvani research center for new technologies in life science engineering, university of tehran, p.o. box 63894-14179, tehran, iran a.s. hatamian zarmi department of life science engineering, faculty of interdisciplinary new sciences and technologies, university of tehran, p.o. box 14395-1561,tehran, iran.

recently, the production of biosurfactants in bioreactors and their use in various pharmaceutical,chemical and food industries have been developed. optimum production is directly related to the physicochemicalcondition of culture medium (such as ph and temperature) and engineering parameters of bioreactors (such asaeration rate, volume of operation and the amount of energy input). understanding...

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