Brazilian Journal of Microbiology | |
Screening mitosporic fungi for organochlorides degradation | |
Vera Maria Valle Vitali2  Kátia Maria Gomes Machado1  Mara Mercedes De Andrea1  Vera Lúcia Ramos Bononi1  | |
[1] ,Instituto de BotânicaSão Paulo SP ,Brasil | |
关键词: RBBR decolorization; soil bioremediation; organochlorine degradation; xenobiotics; descoloração de RBBR; biorremediação de solo; degradação de organoclorados; xenobióticos; | |
DOI : 10.1590/S1517-83822006000300012 | |
来源: SciELO | |
【 摘 要 】
Fifty-five isolates of filamentous fungi were studied regarding their ability to decolorize Remazol brilliant blue R dye. The fungi were isolated from soil in the Baixada Santista region, which is contaminated with industrial residues containing a mixture of organochlorine compounds, mainly hexachlorobenzene. The fungi were grown in liquid malt extract medium with 0.02% of dye and shaken at 200 rpm for 14 days at 28 ± 2ºC. Two types of behavior regarding the dye were observed: adsorption and degradation. Eupenicillium baarnenseSsp1951 and Ssp1952 and Eupenicilliumcrustaceum SSP1953 presented high RBBR decolorization and were then analyzed regarding their ability to degrade 14C-hexachlobenzene (4138.31 mg HCB per kg soil) during a 56 days culture at 28 ± 2ºC. Eupenicillium crustaceum SSP1953 was able to reduce n-hexane soluble 14C-compounds (24.6%) and to form non-extractable 14C-residues (20.5%). The same behavior was also observed in the two E. baarnense strains (Ssp1951 and Ssp1952) but the percentages were lower than those obtained for Eupenicilliumcrustaceum. The main action of Eupenicillium spp on HCB is to transform it into non-extractable 14C-residues as confirmed by the gas chromatography results.
【 授权许可】
CC BY-NC
All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License
【 预 览 】
Files | Size | Format | View |
---|---|---|---|
RO202005130167446ZK.pdf | 311KB | download |