MINERALIZATION OF THE SULFONATED AZO DYE MORDANT YELLOW-3 BY A 6-AMINONAPHTHALENE-2-SULFONATE-DEGRADING BACTERIAL CONSORTIUM

被引:259
作者
HAUG, W
SCHMIDT, A
NORTEMANN, B
HEMPEL, DC
STOLZ, A
KNACKMUSS, HJ
机构
[1] UNIV STUTTGART, INST MATEMAT, AZENBERGSTR 18, W-7000 STUTTGART 1, GERMANY
[2] UNIV GESAMTHSCH PADERBORN, FACHGEBIET TECH CHEM & CHEM VERFAHRENSTECH, W-4790 PADERBORN, GERMANY
关键词
D O I
10.1128/AEM.57.11.3144-3149.1991
中图分类号
Q81 [生物工程学(生物技术)]; Q93 [微生物学];
学科分类号
071005 ; 0836 ; 090102 ; 100705 ;
摘要
Under anaerobic conditions the sulfonated azo dye Mordant Yellow 3 was reduced by the biomass of a bacterial consortium grown aerobically with 6-aminonaphthalene-2-sulfonic acid. Stoichiometric amounts of the aromatic amines 6-aminonaphthalene-2-sulfonate and 5-aminosalicylate were generated and excreted into the medium. After re-aeration of the culture, these amines were mineralized by different members of the bacterial culture. Thus, total degradation of a sulfonated azo dye was achieved by using an alternating anaerobic-aerobic treatment. The ability of the mixed bacterial culture to reduce the azo dye was correlated with the presence of strain BN6, which possessed the ability to oxidize various naphthalenesulfonic acids. It is suggested that strain BN6 has a transport system for naphthalenesulfonic acids which also catalyzes uptake of sulfonated azo dyes. These dyes are then gratuitously reduced in the cytoplasm by unspecific reductases.
引用
收藏
页码:3144 / 3149
页数:6
相关论文
共 22 条