Abstract The purpose of this study was to describe the ecoprint quality silk fabrics with different natural dyes in terms aesthetics motif, and color fastness washing rubbing. This research method is experimental descriptive percentage analysis. Experiments using tunjung alum mordant as well teak leaf ecoprints, Japanese papaya (Cnidoscolus aconitifolius), cherry leaves (Muntingia calabura), Ja...

Desorption electrospray ionization mass spectrometry (DESI-MS) is an ambient technique that shows great potential for the analysis of fragile heritage objects in situ. This article focuses on application a recently built DESI source to characterize natural dyestuffs historical textiles and presentation initial imaging experiments. Optimization instrumental settings, geometrical parameters, solv...

Microwave irradiation (MWI) has been applied to the development of rapid methods to process biological samples for scanning electron microscopy (SEM). In this paper we propose two simple and quick techniques for processing bacteria (Proteus mirabilis and Vibrio mimicus) for SEM using MWI. In the simplest methodology, the bacteria were placed on a cover-glass, air-dried, and submitted to conduct...

Aims and objectives : The aim of this in vitro study is to assess the diffusibility and degradation of three calcium hydroxide pastes. Materials and methods : Three pastes were prepared by mixing calcium hydroxide powder with three different vehicles namely water, propylene glycol and CMCP for the investigation. The three pastes were sealed in porcelain caps and immersed in distilled water for ...

Synthetic pentamonogalloylglucose applied to fixed tissues acts as a mordant, inducing high and diversified contrast similar to that obtained with natural gallotannins of low molecular weight (LMGG). By the separate use of each of the two moieties of the galloylglucose molecule, it was found that gallic acid is the mordanting agent. Glucose may contribute, however, to the effect by increasing t...

Biphenyl has been widely used as a heat-transfer agent, a dye mordant, a synthetic resin, a constituent of agricultural chemicals and a post-harvest fungicide to preserve citrus fruits. Occupational biphenyl poisoning has been characterized by disorders of the liver, kidney, central and peripheral nervous systems and motor and muscle functions. The carcinogenic potential of biphenyl was not eva...

India has a very rich diversity and plantkingdom is certainly a treasure house of diverse natural products. One such product from nature is the dye. In this study, natural colorants mainly flavonoids and carotenoids present in the Marigold flower (TageteserectaL.) were extracted using Soxhlet extraction method and other conventional techniques under different operating conditions. Spectrophotom...