نتایج جستجو برای: DszB

تعداد نتایج: 15  

2013
Majid Soheili Mahmoud Shavandi Neda Akbari

The biodesulfurization (BDS) of sulfur compounds in fossil fuels is a process to reduce sulfur dioxide emissions that cause environmental pollution. Gordonia alkanivorans RIPI90A is able to convert dibenzothiophene, an organic sulfur compound in petroleum, to 2-hydroxybiphenyl (2-HBP) in 4S pathway. In this study, (DBT), DszA and DszB, DBT sulfone monooxygenase, and desulfinase were respectivel...

Journal: :Microbiology 1997
C Oldfield O Pogrebinsky J Simmonds E S Olson C F Kulpa

Rhodococcus sp. strain IGTS8 (ATCC 53968) is able to utilize dibenzothiophene (DBT) as a sole source of sulphur. The carbon skeleton of DBT is not metabolized and is conserved as 2-hydroxybiphenyl (HBP), which accumulates in the medium. This phenotype is due to the expression of the plasmid-encoded DBT-desulphurization (dsz) operon, which encodes three proteins, DszA, B and C. In this paper it ...

Khosro Khajeh Mahmoud Shavandi Majid Soheili Neda Akbari Shokufeh Zareian

The biodesulfurization (BDS) of sulfur compounds in fossil fuels is a process to reduce sulfur dioxide emissions that cause environmental pollution. Gordonia alkanivorans RIPI90A is able to convert dibenzothiophene, an organic sulfur compound in petroleum, to 2-hydroxybiphenyl (2-HBP) in 4S pathway. In this study, (DBT), DszA and DszB, DBT sulfone monooxygenase, and desulfinase were respectivel...

Journal: :journal of petroleum science and technology 2013
mahmoud shavandi majid soheili shokufeh zareian neda akbari khosro khajeh

the biodesulfurization (bds) of sulfur compounds in fossil fuels is a process to reduce sulfur dioxide emissions that cause environmental pollution. gordonia alkanivorans ripi90a is able to convert dibenzothiophene, an organic sulfur compound in petroleum, to 2-hydroxybiphenyl (2-hbp) in 4s pathway. in this study, (dbt), dsza and dszb, dbt sulfone monooxygenase, and desulfinase were respectivel...

Journal: :Applied and environmental microbiology 2009
Javier Calzada María T Zamarro Almudena Alcón Victoria E Santos Eduardo Díaz José L García Felix Garcia-Ochoa

Biodesulfurization was monitored in a recombinant Pseudomonas putida CECT5279 strain. DszB desulfinase activity reached a sharp maximum at the early exponential phase, but it rapidly decreased at later growth phases. A model two-step resting-cell process combining sequentially P. putida cells from the late and early exponential growth phases was designed to significantly increase biodesulfuriza...

Journal: :Acta Crystallographica Section A Foundations of Crystallography 2002

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شاهد - دانشکده علوم انسانی 1389

رها شدن گاز so2 در اثر احتراق سوخت های فسیلی یکی از علل اصلی آلودگی زیست محیطی و بیماری های تنفسی می باشد. عمده ترین ماده گوگردی موجود در نفت خام و برش های آن به صورت دی بنزوتیوفن و مشتقات الکیله آن می باشد. در گوگردزدایی زیستی، حذف گوگرد از برش های نفتی با استفاده از باکتری ها توسط محصولات ژن هایabc dsz که اولین بار از باکتریrhodococcus erythropolis strain igts8 جدا شدند از طریق مسیرمتابولیکی ...

Journal: :Applied and environmental microbiology 2013
Andres Abin-Fuentes Magdy El-Said Mohamed Daniel I C Wang Kristala L J Prather

Microbial desulfurization, or biodesulfurization (BDS), of fuels is a promising technology because it can desulfurize compounds that are recalcitrant to the current standard technology in the oil industry. One of the obstacles to the commercialization of BDS is the reduction in biocatalyst activity concomitant with the accumulation of the end product, 2-hydroxybiphenyl (HBP), during the process...

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