نتایج جستجو برای: enzyme technology

تعداد نتایج: 705590  

Journal: :Biointerface Research in Applied Chemistry 2021

With the ever-increasing demand for clean technology in industrial sector, natural methods, such as enzyme-catalyzed, represent a sustainable alternative to chemical processes. In this context, synthesis of benzyl benzoate ester using commercial immobilized lipases was evaluated. For this, kinetic study carried out determine reaction time (24 h) and enzyme concentration (10 wt%). Then, 22 full ...

Journal: :iranian biomedical journal 0
آذین نوروزی azin nowrouzi خدیجه مقرازی khadijeh meghrazi تقی گل محمدی taghi golmohammadi ابوالفضل گلستانی abolfazl golestani شهین احمدیان shahin ahmadian مهشید شفیع زاده mahshid shafiezadeh زهرا شجری

background: we aimed at evaluating the toxicity effects of low (subtoxic) concentrations of silver nanoparticles (agnp, 5-10 nm) in human hepatoblastoma (hepg2) cell line after and during a period of about one month. methods: xtt and mtt assays were used to draw a dose-response curve ic50 (half maximal inhibitory concentration) value of the agnp on hepg2 cells was calculated to be 2.75-3.0 mg/l...

Journal: :Journal of biomolecular screening 2011
Ran Tu Ronny Martinez Radivoje Prodanovic Mathias Klein Ulrich Schwaneberg

Proteases are industrially important enzymes but often have to be improved for their catalytic efficiency and stabilities to suit applications. Flow cytometry screening technology based on in vitro compartmentalization in double emulsion had been developed and applied on directed evolution of paraoxonase and β-galactosidase. Further advancements of flow cytometry-based screening technologies wi...

Journal: :Aij Journal of Technology and Design 2023

This research is to develop an improved technology in a wastewater treatment facility containing fermented buttermilk under operate of dairy product factory. Wastewater with high concentrations difficult treat. Through new Enzyme Biofilm Method(EBM), we made improvements and demonstrated appropriate operation. After two tests, the improvement final stage, despite accepting all waste, has kept d...

Journal: :Journal of Clinical Microbiology 2021

Reliable serological tests are required to determine the prevalence of antibodies against severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) and characterize immunity disease in order address key knowledge gaps 2019 (COVID-19) pandemic. Quantitative suspension array technology (qSAT) assays based on xMAP Luminex platform overcome limitations rapid diagnostic enzyme-linked immunosorben...

Journal: :iranian journal of virology 0
m delfan-beiranvand blood transfusion research center, high institute for research and education in transfusion medicine, khorramabad, iran a sheikhian department of immunology, lorestan university of medical sciences, khorramabad, iran m birjandi department of biostatistics, lorestan university of medical sciences, khorramabad, iran m fazeli virology department, faculty of medicine, tarbiat modares university, tehran, iran

background and aims: cytomegalovirus (cmv) is a member of herpesviruses. it is one of the most common cause of congenital and prenatal infections. cmv infection of pregnant women, especially in the first trimester may lead to congenital abnormalities in the newborns. the prevalence of cmv infection in developed countries is about 40% and in developing countries may be 100%. because there is no ...

Journal: :asia pacific journal of medical toxicology 0
syed anzar ahmed rizvi dow university of health sciences, pakistan alvina tariq sindh university of health sciences, pakistan

background: blindness due to cataract is a major and important problem in pakistan. the problem is expected to increase in future due to increase in tobacco smoking. the aim of study was to look for the mechanism associated with metal deposition and its effect on antioxidant enzymes in lens of smokers in karachi, pakistan. methods: 20 cataract patients were randomly selected from out patient de...

Journal: :iranian journal of toxicology 0
حسن باغشانی hasan baghshani department of basic sciences, ferdowsi university of mashhad, mashhad, iran. وحیده قدسی vahide ghodsi department of basic sciences, ferdowsi university of mashhad, mashhad, iran.

background: besides acute lethal cyanide poisoning, its chronic intoxication may also produce some pathologic effects on different tissues that precedes alterations in biochemical parameters. the present study was aimed to evaluate the effects of sublethal cyanide exposure on some tissue enzyme activities in liver and kidney of rats. methods: twelve male rats were divided into two groups as fol...

Journal: :modares journal of medical sciences: pathobiology 2009
leila jalili sanandajkhah abdolhossein dalimi

objective: the entry of toxoplasma gondii into the bloodstream and other tissues (such as liver, muscle, cardiac muscle, …) of intermediate hosts and its multiplication in nucleated cells may cause changes in plasma levels of various enzymes due to tissue damage. in present study the serum levels of ast, alt, alk/p, cpk, ldh, and acp in rats infected experimentally with toxoplasma gondii have b...

Journal: :Bioscience, biotechnology, and biochemistry 2008
Saikat Chakraborty Makiko Sakka Tetsuya Kimura Kazuo Sakka

A small enzyme showing diaphorase activity was purified from culture supernatant of Clostridium kluyveri and its N-terminal amino acid sequence was determined. This sequence identified a gene (diaA) encoding a protein (DiaA) of 229 amino acids with a predicted molecular weight of 24,981 in the genomic DNA sequence database of C. kluyveri constructed by the Research Institute of Innovative Techn...

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