Dental plaque removal is an important issue in health promotion. Toothbrushing is one of the main methods employed for such purpose, since it can prevent dental caries by means of the fluoride present in the dentifrice. Dentifrices might contain plaque disclosing agents and thus allow dental plaque observation. The aim of this study was to assess whether utilization of a plaque disclosing agent...

The reaction of macrophages to asbestos and glass fibers was studied by light and by electron microscopy. Measurements were made of LDH release, staining with erythrosine B, and lactate production. Size and shape of asbestos fibers were found to have more effect than the physicochemical properties of the surface. Long fibers resulted in a protracted pathogenic but no acute cytotoxic effect.

Nanoporous nickel oxide (NiO x ) has been deposited with two different procedures of sintering (CS and RDS). Both samples display solid state oxidation at about 3.1 V vs Li+/Li. Upon sensitization of CS/RDS NiO x with erythrosine b (ERY), nickel oxide oxidation occurs at the same potential. Impedance spectroscopy revealed a higher charge transfer resistance for ERY-sensitized RDS NiO x with res...

The development of drugs for photodynamic therapy (PDT) is an important area of research due to their growing use in medical applications. Therefore, it is important to develop new bioassay methods for PDT photosensitizers that are inexpensive, easy to handle and highly sensitive to environmental conditions. Xanthene dyes (fluorescein, rose bengal B, erythrosine B and eosin Y) with LED light so...

1. The amounts of iodine in nationally representative samples of prepared and cooked groups of foods and in a wide variety of individual foods and food products were determined colorimetrically. The amounts of erythrosine, a red food colour containing 577 mg I/g were also determined in selected foods and diets by high-performance liquid chromatography. 2. The average British diet was calculated...

FD&C Red No.3 (erythrosine) has been used as a dye in foods, drugs and cosmetics since its approval by the US Department of Agriculture in 1907. In 1977 the Certified Color Manufacturers' Association (CCMA) initiated studies on FD&C Red No.3 including chronic toxicity and carcinogenicity studies in rats and mice. Data from the CCMA chronic studies revealed an increased incidence of thyroid foll...

rosine B, Tartrazine, Lissamine Green B, Pyronin G, Acetyl Yellow G, Ponceau 6R, Ponceau SX, Food Orange #2, and Food Yellow #3. The concentration of dye tested was 50 mg/ L of incubation mixture (25 pg/tube) in RIA systems for human lutropin (hLH), its alpha and beta subunits, rat LII, rat corticotropin (rACTH), rat insulin, and human thyroxin (T4) and testosterone. (For T4 we usedthe MAGIC-T4...

We examined a simple screening method for judging the complex formation between a drug and aluminum(III) on a spot plate. As few drug had color reaction by basing on the binary complex formation of drug-aluminum(III), the ternary complex formation of drug-aluminum(III)-dye was studied this time using 50 kinds of drugs. The dyes used were Chromazurol S and Erythrosin. As a result, in the drug th...