کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4410751 1307562 2011 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Novel enzymatic activity of cell free extract from thermophilic Geobacillus sp. UZO 3 catalyzes reductive cleavage of diaryl ether bonds of 2,7-dichlorodibenzo-p-dioxin
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم محیط زیست شیمی زیست محیطی
پیش نمایش صفحه اول مقاله
Novel enzymatic activity of cell free extract from thermophilic Geobacillus sp. UZO 3 catalyzes reductive cleavage of diaryl ether bonds of 2,7-dichlorodibenzo-p-dioxin
چکیده انگلیسی

We characterized the ability of the cell free extract from polychlorinated dibenzo-p-dioxins degrading bacterium Geobacillus sp. UZO 3 to reduce even highly chlorinated dibenzo-p-dioxins such as octachlorodibenzo-p-dioxins in incineration fly ash. The degradation of 2,7-dichlorodibenzo-p-dioxin (2,7-DCDD) as a model dioxin catalyzed by the cell free extract from this strain implicates that the ether bonds of 2,7-DCDD molecule undergo reductive cleavage, since 4′,5-dichloro-2-hydroxydiphenyl ether and 4-chlorophenol were detected as intermediate products of 2,7-DCDD degradation.


► Bacterial strain Geobacillus sp. UZO 3 was isolated from a forest compost pile.
► This strain showed novel enzymatic activity for dioxin degradation.
► The cell Free Extract catalyzed reductive cleavage of diaryl ether bonds of 2,7-DCDD.
► We propose the new microbial degradation pathway of dioxin.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Chemosphere - Volume 83, Issue 6, April 2011, Pages 868–872
نویسندگان
, , , , , , , , , , , ,