Pigments are compounds with characteristics of importance to many industries. In the food industry they are used as additives, color intensifiers, antioxidants, etc. Pigments come in a wide variety of colors, some of which are water-soluble [1]. The production colorant from biological agents for food and textile has attracted increased interests in recent years. Nature produces many biocolorant...

Colour, a vital constituent of food, is indispensable to the modern day consumer as a means for the rapid identification and ultimate acceptance of food. A number of reviews concerning the toxicology of natural and synthetic dyes, especially those used in food, have appeared since the dyestuffs became potential suspects for causing cancer. A large number of natural or synthetic dyes have been r...

The primo vascular system (PVS), floating in lymph ducts, was too transparent to be observed by using a stereomicroscope. It was only detectable with the aid of staining dyes, for instance, Alcian blue, which was injected into the lymph nodes. Some dyes were absorbed preferentially by the PVS than the lymph wall. It remains a standing problem to know what dyes are absorbed better by the PVS tha...

India has a rich biodiversity and harbours a wealth of useful germplasm resources and there is no doubt that the plant kingdom is a treasure-house of diverse natural products. One such product from nature is the dye. Dyes are one of the most important uses of the plants. Recently, interest in the use of natural dyes has been growing rapidly due to the result of stringent environmental standards...

The objective of this investigation was to shed light on the nature of interaction of different organic dyes and an inorganic dye, Ruthenium (II) polypyridine complex, with TiO2 nanoparticles. TiO2 is commonly deployed as an efficient energy transfer electrode in dye sensitized solar cells. The efficiency of dye sensitized solar cells is a function of the interaction of a dye with the electrode...

Sustainable production policy has encouraged batik industry to switch synthetic dyes natural dyes. However, the process still brings negative impacts on environment as well humans. In order solve this problem, needs develop green model using cleaner options. The purpose of research is design for greening industry. was conducted in “Mbah Guru”. Mbah Guru located Lamongan, East Java. used a feasi...

Invasive alien plants that damagingly overgrow native ecosystems can be beneficially used to produce natural dyes. Natural dyes are healthier and more environmentally friendly than synthetic dyes, so their use on textiles other products come into contact with humans is desirable. In this study, the possibility of using a dye extracted from purple petals invasive plant Impatiens glandulifera Roy...

Finding natural food coloring options from plant-based sources to substitute artificial dyes is a challenging task because often present low water-solubility, not very vibrant hues, and instability due interactions with ingredients. Chemometric approaches can be used evaluate color differences patterns resulting synthetic when applied systems. Here, the Mixture Design Principal Component Analys...

Abstract Self-powered photosensor is fabricated based on nanostructure TiO 2 /natural dyes. nanostructured thin film was prepared FTO/glass substrates by hydrothermal method. Surface morphology, crystalline structure, as well optical properties of the sample are investigated. Three types natural dyes, pomegranate, aubergine, and coffee used an active layer (absorber) photosensor. However, solut...

<span lang="EN-US">Natural dye-sensitized solar cells (DSSC) have gained so much attention in recent years due to its low-cost fabrication process, ease of fabrication, and environmentally friendly. In order improve the DSSC performance, absorbance spectral dyes must reach maximum visible spectrum values. The combination two with different spectra can be utilized expand spectral. Here, we...