نتایج جستجو برای: green oxidation

تعداد نتایج: 255057  

2013
Kin-Sing Wong Man-Kit Cheung Chun-Hang Au Hoi-Shan Kwan

Laccases are versatile biocatalysts for the bioremediation of various xenobiotics, including dyes and polyaromatic hydrocarbons. However, current sources of new enzymes, simple heterologous expression hosts and enzymatic information (such as the appropriateness of common screening substrates on laccase engineering) remain scarce to support efficient engineering of laccase for better "green" app...

Journal: :Plant physiology 2006
Keni Jiang Christian Schwarzer Elizabeth Lally Shibo Zhang Steven Ruzin Terry Machen S James Remington Lewis Feldman

Arabidopsis (Arabidopsis thaliana) was transformed with a redox-sensing green fluorescent protein (reduction-oxidation-sensitive green fluorescent protein [roGFP]), with expression targeted to either the cytoplasm or to the mitochondria. Both the mitochondrial and cytosolic forms are oxidation-reduction sensitive, as indicated by a change in the ratio of 510 nm light (green light) emitted follo...

2011
Keisuke Nakamura Kirika Ishiyama Hiroyo Ikai Taro Kanno Keiichi Sasaki Yoshimi Niwano Masahiro Kohno

The aim of the present study is to compare different analytical methods for singlet oxygen and to discuss an appropriate way to evaluate the yield of singlet oxygen photogenerated from photosensitizers. Singlet oxygen photogenerated from rose bengal was evaluated by electron spin resonance analysis using sterically hindered amines, spectrophotometric analysis of 1,3-diphenylisobenzofuran oxidat...

Journal: :Zeitschrift fur Naturforschung. C, Journal of biosciences 2005
Elly P H Best G K Kvesitadze G Khatisahvili T Sadunishvili

Environmental contamination by explosives is a worldwide problem. Of the 20 energetic compounds, 2,4,6-trinitrotoluene (TNT), hexahydro-1,3,5-trinitro-1,3,5-triazine (RDX), and octahydro-1,3,5,7-tetranitro-1,3,5,7-tetrazocine (HMX) are the most powerful and commonly used. Nitroamines are toxic and considered as possible carcinogens. The toxicity and persistence of nitroamines requires that thei...

2001
R. M. Taylor

Acid mine drainage (AMD) is usually treated by air oxidation followed by addition of lime to precipitate metal hydroxides and calcium sulfate. Geo2 Limited of Melbourne, Australia, has developed and patented a novel alternative precipitation scheme based on the formation of mixed valency, M(II)-M(III), hydroxide sulfate salts. When the composition of AMD has an appropriate ratio of Fe(II):Fe(II...

Journal: :journal of food biosciences and technology 0
n. shokraneh ph. d. student of the department of food science and technology, ayatollah amoli branch, islamic azad university, mazandaran, iran. p. ariaii assistant professor of department of food science and technology, ayatollah amoli branch, islamic azad university, mazandaran, iran. f. rasouli ghahrodi ph.d. student of the department of food science and technology, college of food science and technology, tehran science and research branch, islamic azad university, tehran, iran. f. hasannia ph. d. student of the department of food science and technology, ayatollah amoli branch, islamic azad university, mazandaran, iran. s. sabbaghpour ph. d. student of the department of food science and technology, ayatollah amoli branch, islamic azad university, mazandaran, iran.

oxidative and microbiological degradations are the main factors that determine the quality of food and the shelf life. color and moisture stability are important quality attributes that contribute to meat shelf life, salability and consumer acceptability. there is currently considerable interest in edible films coatings and natural antioxidants because of their potential to improve the quality ...

2010
Carlos R. Arias-Barreiro Keisuke Okazaki Apostolos Koutsaftis Salmaan H. Inayat-Hussain Akio Tani Maki Katsuhara Kazuhide Kimbara Izumi C. Mori

A highly specific, high throughput-amenable bacterial biosensor for chemically induced cellular oxidation was developed using constitutively expressed redox-sensitive green fluorescent protein roGFP2 in E. coli (E. coli-roGFP2). Disulfide formation between two key cysteine residues of roGFP2 was assessed using a double-wavelength ratiometric approach. This study demonstrates that only a few min...

Journal: :Physical chemistry chemical physics : PCCP 2015
Xi Liu Yulia Ryabenkova Marco Conte

The activation and use of oxygen for the oxidation and functionalization of organic substrates are among the most important reactions in a chemist's toolbox. Nevertheless, despite the vast literature on catalytic oxidation, the phenomenon of autoxidation, an ever-present background reaction that occurs in virtually every oxidation process, is often neglected. In contrast, autoxidation can affec...

2008
Betti Kondor Juan García-Serna Martyn Poliakoff Neil R. Thomas María José Cocero

The production of pharmaceuticals in a ‘green’ way is a concern in the recent years. In this work, we have examined an oxidation reaction in a continuous flow supercritical CO2 system using individual CLEA (Cross Linked Enzyme Aggregate) of cholesterol oxidase and combi-CLEA of cholesterol oxidase and catalase. Besides the activity studies, the research was aimed to be extended to kinetic studi...

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