Objective: This study evaluated the effect of food-simulating media associated with brushing and coffee staining on color stability of different composite resins. Materials and methods: Eighty specimens were prepared for each composite: Grandio SO (Voco), Amaris (Voco), Filtek Z350XT (3M/ESPE), Filtek P90 (3M/ESPE). They were divided into four groups according to food-simulating media for 7 day...

Sudan-1 has been used for coloring food. However, recent alarms worldwide about the carcinogenic and mutagenic properties of azo-compounds have led to concerns over their human consumption. In the U.K. in 2005, over 570 products were found to be contaminated with the azo dye Sudan-1 and this and the health risks associated with this dye resulted in the subsequent international ban of this addit...

We have performed the present piece of work to evaluate the effect of synthetic food coloring azo dye (sunset yellow) on actively dividing root tip cells of Brassica campestris L. Three doses of azo dye were administered for the treatment of actively dividing root tip cells, namely, 1%, 3%, and 5%, for 6-hour duration along with control. Mitotic analysis clearly revealed the azo dye induced end...

In recent years, the increasing use of synthetic dyes showed an increase of allergic contact dermatitis with tissues, food, pharmaceutical and cosmetic products. This paper describes a method for extracting quickly, efficiently and economically a natural dye the Nasunin, a purple anthocyanin. To assess the potential sensitizing effect on the skin, have been formulated and applied to the healthy...

Allura Red AC (E129) is an azo dye that widely used in drinks, juices, bakery, meat, and sweets products. High consumption of Allura Red has claimed an adverse effects of human health including allergies, food intolerance, cancer, multiple sclerosis, attention deficit hyperactivity disorder, brain damage, nausea, cardiac disease and asthma due to the reaction of aromatic azo compounds (R = R' =...

Eleven organic synthetic dyes, currently or formerly used as food colours in Brazil, were tested to determine their effect on mitochondrial respiration in mitochondria isolated from rat liver and kidney. The compounds tested were: Erythrosine, Ponceau 4R, Allura Red, Sunset yellow, Tartrazine, Amaranth, Brilliant Blue, Blue, Fast Red E, Orange GGN and Scarlet GN. All food colours tested inhibit...

Background & Aims of the Study: Dyes have significant role in environmental problems, due to their toxic effects on the food chain and sources of water. The purpose of this research was to study the adsorption of acid yellow 36 dye onto pinecone using batch system. Materials & Methods: This research was performed at laboratory scale and batch system. Equilibrium isotherms...

The use of dyes is widespread across almost all industries. Consequently, these are found in various sources water and food that humans, animals, plants consume directly or indirectly. Most comprised complex aromatic structures have proven harmful. Congo red dye, a azo dye based on benzidine, most commonly used dyes; its metabolites (benzidine analogs) can be toxic, but itself not always presen...


 Natural pigments extracted from plants are raised as a vital substitute to artificial dyes. The present study was conducted extract pigment Bistorta amplexicaule and evaluate its dyeing property, antimicrobial activity toxicity. extraction done by maceration sonication methods with 7.5% 5% yield, respectively. appeared bright- amber colored which used for fabrics food using traditional m...