نتایج جستجو برای: organosulfur compounds

تعداد نتایج: 226771  

2015
Ying Liu Xiao-Yu Lei Lian-Fu Chen Yin-Bing Bian Hong Yang Salam A. Ibrahim Wen Huang

Organosulfur compounds are the basis for the unique aroma of Lentinula edodes, and cysteine sulfoxide lyase (C-S lyase) is the key enzyme in this trait. The enzyme from Alliium sativum has been crystallized and well-characterized; however, there have been no reports of the characterization of fungi C-S lyase at the molecular level. We identified a L. edodes C-S lyase (Lecsl), cloned a gene of C...

Journal: :Zeitschrift fur Naturforschung. C, Journal of biosciences 2003
Qing Yang Qiuhui Hu Osamu Yamato Keun-Woo Lee Yoshimitsu Maede Teruhiko Yoshihara

The sulfurous acid ester, trans-sulfurous acid allyl ester 3-allylsulfanyl-allyl ester 8, along with two known thiosulfinates was isolated from the aqueous ethanol extract of garlic (Allium sativum). The chemical structure of 8 was determined on the basis of spectroscopic data including high resolution mass and two-dimensional NMR techniques. All of these compounds induced methemoglobin formati...

Journal: :Chemistry 2006
Antonio Chica Giorgio Gatti Bjorn Moden Leonardo Marchese Enrique Iglesia

Rates and selectivities for the oxidation of various organosulfur compounds with tert-butyl hydroperoxide were measured on CoAPO-5 (APO = aluminophosphate; Co/P = 0.05), Co/H-Y (Co/Al = 0.15), and MoO(x)/Al2O3 (15 % wt MoO3). Rates increased with increasing electron density at the sulfur atom (methyl phenyl sulfide>diphenyl sulfide>4-methyldibenzothiophene>2,5-dimethyl thiophene). Rates (per me...

Journal: :Journal of health sciences and innovative research 2022

Introduction: Garlic (Allium sativum, Family: Amaryllidaceae) is a seasoning plant cultivated all over the world. contains lot of bioactive compounds including organosulfur compounds, saponins, phenolic and polysaccharides. Anticoagulant activity one pharmacological properties Garlic. The aim this study was to review mechanism anticoagulant garlic summarise potential evidence about from past st...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه رازی - دانشکده علوم 1388

چکیده ندارد.

2015
Wael Ismail Sultanah AL. Shammary Wael S. El-Sayed Christian Obuekwe Ashraf M. El Nayal Abdul Salam Abdul Raheem Abdulmohsen Al-Humam

A Pseudomonas aeruginosa AK6U strain produced rhamnolipid biosurfactants to variable extents when grown on MgSO4 or organosulfur compounds as sulfur sources and glucose as a carbon source. Organosulfur cultures produced much higher biosurfactants amounts compared to the MgSO4 cultures. The surface tension of the growth medium was reduced from 72 mN/m to 54 and 30 mN/m in cultures containing MgS...

Journal: :Beilstein Journal of Organic Chemistry 2023

In the field of organosulfur chemistry, sulfenylating agents are an important key in C–S bond formation strategies. Among various precursors, N -sulfenylsuccinimide/phthalimide derivatives have shown highly electrophilic reactivity for asymmetric synthesis many organic compounds. Hence, this review article, we focus on application these alternative reagents transformations.

2007
R. Alonso del Aguila K. Boltes P. Leton A. Rodríguez R. Rosal Eloy Garcia-Calvo Raul Alonso

Biodesulfurization (BDS) can be used as complementary technology to traditional hydrodesulfurization (HDS) process for sulfur reduction in fossil fuel. One of the mayor problems of BDS is the lower desulfurization yield obtained due to the low solubility of organosulfur compounds in water phase where microorganisms survive. In this work, the use of chemical surfactants largely increase the proc...

Journal: :Applied and environmental microbiology 1987
R P Kiene P T Visscher

Anoxic salt marsh sediments were amended with dl-methionine and dimethylsulfoniopropionate (DMSP). Microbial metabolism of methionine yielded methane thiol (MSH) as the major volatile organosulfur product, with the formation of lesser amounts of dimethylsulfide (DMS). Biological transformation of DMSP resulted in the rapid release of DMS and only small amounts of MSH. Experiments with microbial...

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