The present study is vital to the understanding of bioremediation of structurally different azo dyes by some unusual Brown-rot fungi. Bioremoval of each dye (20 mg l(-1)) was tested in two different culture media under static and shaking conditions by taking inocula from different fungi. Fungal strains showed varying dyes removal abilities, though considerable high in case of Acid Red (AR) 151(...

Near-infrared (NIR) organic dyes have become important for many biomedical applications, including in vivo optical imaging. Conjugation of NIR fluorescent dyes to photosensitizing molecules (photosensitizers) holds strong potential for NIR fluorescence image guided photodynamic therapy (PDT) of cancer. Therefore, we were interested in investigating the photophysical properties, in vivo tumor-af...

Although low molecular weight reactive dyes are versatile and easy to use, they are not without limitations (see Limitations of Low Molecular Weight Dyes). For example, the fluorescence output of the dye–biomolecule conjugate is often limited by the number of dyes that can be attached to the biomolecule without disrupting its function. Our highly fluorescent microspheres — both the FluoSpheres ...

The bearing of lipid solubilities and substantivities of dyes on the results of cytochemical staining reactions is briefly discussed. Solubilities of indigoid dyes in various lipids are qualitatively similar to those in symtetrachloroethane. Quantitative determinations made in this solvent indicate that, in general, indigo and its 5:5'and 6:6'-substituted derivatives are sparingly soluble, wher...

We examined five nucleic acid binding fluorescent dyes, propidium iodide, SYBR Green I, YO-PRO-1, TOTO-3, and TO-PRO-3, for nuclear DNA staining, visualized by fluorescence and laser confocal microscopy. The optimal concentration, co-staining of RNA, and bleaching speeds were examined. SYBR Green I and TO-PRO-3 almost preferentially stained the nuclear DNA, and the other dyes co-stained the cyt...

The benzidine dye initiative is a research program established by the National Toxicology Program to generate an integrated body of scientific information regarding the potential health risks associated with exposure to benzidine- and benzidine-congener-derived dyes. Because an in-depth evaluation of each of the hundreds of benzidine-congener-derived dyes was considered impractical, the researc...

The effect of xanthene dyes on the chemiluminescence from the aerobic indole-3-acetic acid (IAA) oxidation, catalyzed by horseradish peroxidase (HRP), was studied. The rate of IAA oxidation and dye destruction were controlled. It was found that the addition of dyes to the IAA/HRP/O2 system resulted in: (i) the appearance of emission in the region of dye fluorescence, (ii) an increase of the tot...

17 The presence of dyes in wastewater effluent of textile industry is well documented. In 18 contrast, the endocrine disrupting effects of these dyes and wastewater effluent have been 19 poorly investigated. Herein, we studied twenty-three commercial dyes, usually used in the 20 textile industry, and extracts of blue jean textile wastewater samples were evaluated for their 21 agonistic and anta...

Previous studies have demonstrated the presence of protein-bound aminoazo dyes in the livers of rats fed the hepatocarcinogen 4-dimethylaminoazobenzene (DAB) 1 or certain of its derivatives ( ~ , 35). Since, under a variety of conditions, the levels of these bound derivatives can be correlated with the expected tumor incidence, the formation of the protein-bound dyes appears to be an important ...

Cyanine dyes possessing carboxylic acid groups have been used in many different fields of study. The acid groups can act as handles for bioconjugation or as metal chelators. Several pentamethine cyanine dyes with propionic acid handles were synthesized and their optical properties were studied to determine their usefulness as fluorescent probes. The optical properties studies performed include ...