Parası kalmadığı için otobüse binemiyordur ailesi porno izle ona daha yeni para gönderdiği için tekrar porno istemeye utanınca mecburen otostop çekmek için youporn çantasını alarak yol kenarına gelir etekli porno liseli türk kız yol kenarında dururken yanına yaklaşan porno kibar bir gencin onu gideceği yere kadar bırakmak porno izle istemesine çok mutlu olur arabaya bindiklerinde gideceği yer ile porno arabayı kullanan adamın gittiği yer arasında çok mesafe sex izle farkı olduğunu anlayan türk kız bu yaptığı porno indir iyilik karşısında arabada ona memelerini açar porno sapıklaşan adam yol kenarındaki hotelde durarak porno izle üniversiteli otostop çeken türk kızına odada sakso çektirip sikerCatechol Biodegradation by Pseudomonas Strain: A Critical Analysis| Abstract

44 7460 854 031

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Abstract

Catechol Biodegradation by Pseudomonas Strain: A Critical Analysis

Author(s): Md. Zeyaullah, Razi Ahmad, Asma Naseem, Badrul Islam, Hamad M. I. Hasan, Azza S. Abdelkafe, Faheem A. Benkhayal, Moshahid A. Rizvi and Arif Ali

Catechols are the most abundant organic pollutants of our environment. They are of major concern because of their persistence and toxicity and gave scientists a thinking to engineer/develop certain measures for its removal from the environment. Bacteria explore the environment for its nutritional requirement and degrade many of complex molecules available to them including the toxins and pollutants. Under biological process being the cheapest mode for removal of the catechols, the Pseudomonas putida has been found having the great potential to degrade them upto 500 mg/L. Such degradative bacteria, under normal circumstances, enzymatically convert xenobiotic, aromatic compounds to either catechol or protocatechuate. The most common catabolic pathway involves conversion of the parent molecules to chlorocatechols by the action of a monooxygenase or a dioxygenase. Many members of Pseudomonas carry plasmid that encodes enzymes capable of degrading aromatic and halogenated organic compounds. The degradation proceeds in two phases, first, an aromatic compound is prepared for ring cleavage by a variety of ring modification reactions. The second phase of degradation includes ring fission and subsequent reactions leading to the generation of tricarboxylic acid cycle intermediates. Two key enzymes involved in this 6-ketoadipate pathway are catechol 1, 2- dioxygenase and 3, 4-PCD


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