The extracellular colorants produced by Chlorociboria aeruginosa, Scytalidium cuboideum, and Scytalidium ganodermophthorum, three commonly utilized spalting fungi, were tested against a standard woodworker's aniline dye to determine if the fungal colorants could be utilized in an effort to find a naturally occurring replacement for the synthetic dye. Fungal colorants were delivered in two metho...

A simple and rapid high-performance liquid chromatography (HPLC) method to determine basic colorants such as pararosaniline (PA), auramine O (AO), and rhodamine B (RB) in various processed foods was developed. Linearity of the calibration curves ranged from 0.05 to 50 μg/mL for PA and 0.05-100 μg/mL for AO and RB. The detection and quantification limits (LOD and LOQ) of the basic colorants, whi...

With the rapid growth of photo-inkjet printers using sixcolorant in response to the spread of digital and mobile cameras, there has been a lot of research regarding six-color separation in order to achieve visually smooth tones in highlight regions. Most conventional method use the maximum amount of colorant with a low dot-visibility, thus resulting in paper wetness, poor edgesharpness, and ink...

key words: 1064 nm dispersive Raman spectroscopy, pigment analysis, traditional red artists’ colorants Raman spectra of red colorants were obtained in-situ using a dispersive Raman microscope equipped with a 1064 nm laser source and InGaAs array detector. By employing nearIR excitation, the fluorescence of organic colorants is significantly reduced compared to visible wavelengths. Spectra prese...

c d i d t s p T l b c bstract. This paper proposes a method of six-color separation sing additional colorants and a quantitative granularity metric to educe the color difference and graininess. In conventional six-color eparation, the use of light magenta and light cyan is generally an ffective way of reducing the visibility of dots in bilevel printing deices, i.e., light magenta and light cyan...

BACKGROUND The ultraviolet properties of textiles dyed with synthetic dyes have been widely reported in literature. However, no study has investigated the ultraviolet properties of natural fabrics dyed with natural colorants. This study reports the Ultraviolet Protection Factor (UPF) of cotton fabrics dyed with colorants of plant and insect origins. METHODS Three cotton fabrics were dyed with...

SUMITOMO KAGAKU 2013 through each color filter for each pixel instantaneously by a liquid crystal shutter. Improving the brightness of color filters comes down to improving the brightness of each pixel,3) in other words, improving the transmittance of color resists, which are the materials that form the pixels. In addition to resist components, color resists have colorants mixed in, and color p...

With the impact of globalization on research trends, the search for healthier life styles, the increasing public demand for natural, organic, and "clean labelled" products, as well as the growing global market for natural colorants in economically fast-growing countries all over the world, filamentous fungi started to be investigated as readily available sources of chemically diverse pigments a...

We present a novel spectral imaging technique that allows multiple gray-scale images to be combined in a single hardcopy print. The images are individually revealed when the print is illuminated by suitably chosen light sources. In its basic form, the technique utilizes the complementary relation between cyan, magenta, and yellow colorants and narrow band red, green, and blue illuminants to com...

Arylamines are widely used for the manufacturing of elastomers, colorants and consumer products. Furthermore they are part of many colorants either as contaminant or as cleavage product. Also many hair dyes are arylamines. Thus consumers are exposed from various sources and products, especially high exposure is contributed by tobacco smoke. Many of the arylamines and colorants derived from them...