Colorants for Foods, Drugs, Cosmetics, and Medical Devices

Marmion, Daniel M

doi:10.1002/0471238961.0315121513011813.a01

Cited by 42 publications

(60 citation statements)

References 12 publications

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“…Fresh beetroot juice had the highest content of pigments (as betanin: 47-50 mg/100 ml) and tomatoes the lowest content (as lycopene: 0.9±0.2 mg/100 ml). The average amounts of pigments reported in literature are 40-120 mg betalains/100 g fresh weight of beetroot (Marmion 1991) and 4-9 mg lycopene/100 g of tomatoes (Laleye et al 2010). The pigment contents of the other juices were also within reported regional variations, which can be attributed to various factors.…”

Section: Resultsmentioning

confidence: 99%

Nisin based stabilization of novel fruit and vegetable functional juices containing bacterial cellulose at ambient temperature

et al. 2014

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The current study reports the preparation and stabilization of novel functional drinks based on fruit and vegetable juices incorporating bacterial cellulose from Acetobacter xylinum. Pineapple, musk melon, carrot, tomato, beet root and a blend juice containing 20 % each of carrot and tomato juice with 60 % beet root juice has been studied. These juices have been stabilized over a storage period of 90 days at 28°C, by the use of nisin and maintaining a low pH circumventing the need for any chemical preservatives or refrigeration. Instrumental color values have been correlated with the pigment concentrations present in the fresh as well as stored juices. There was 36, 72 and 60 % loss of total carotenoids in the case of carrot, pineapple and musk melon juices respectively while the lycopene content remained unchanged after 90 days of storage. The betanin content decreased 37 % in the case of beetroot juice and 25 % in the case of beetroot juice blended with carrot and tomato juices. Sensory analysis has revealed a clear preference for the beetroot blended mixed juice.

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Section: Resultsmentioning

confidence: 99%

Nisin based stabilization of novel fruit and vegetable functional juices containing bacterial cellulose at ambient temperature

et al. 2014

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“…1 Every year, thousands tons of such dyes are consumed in food, paper, leather, and textile industries. 2,3 From these industries, large volumes of dyes are released to environment and find their way to water and soil.…”

Section: Introductionmentioning

confidence: 99%

Application of a Novel Micro-Cloud Point Extraction for Preconcentration and Spectrophotometric Determination of Azo Dyes

Ghasemi¹,

Kaykhaii²

2016

Journal of the Brazilian Chemical Society

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A novel room temperature micro-cloud point extraction procedure using triton X-114 surfactant as extracting phase was developed for preconcentration and extraction of three azo dyes (orange G, methyl orange, and acid red 18) from aqueous samples using molecular absorption spectrophotometry in the visible region. The effects of different parameters such as concentration of surfactant and added salting out reagent (Na 2 SO 4 ), pH and type of diluting solvent on microextraction were studied and optimized. Under optimum conditions, calibration curves were linear in the range of 2.0-10.0, 0.2-1.0 and 2-12 mg L -1 with the detection limit of 1.6, 0.6 and 111.0 μg L -1 for orange G, methyl orange and acid red 18, respectively. The relative standard deviation was better than 13.12%. The method was applied to the determination of the azo dyes in water samples. Keywords: micro cloud point extraction, orange G, methyl orange, acid red 18, water analysis IntroductionThe importance of synthetic dyes in today industries can't be denied.1 Every year, thousands tons of such dyes are consumed in food, paper, leather, and textile industries.2,3 From these industries, large volumes of dyes are released to environment and find their way to water and soil. Environmental pollution with dyes can have dire effect on animal, plants, and human health. [4][5][6][7] One of the most important families of dyes is azo dyes that contain −N=N− bond in their structures.8 So far azo dyes have found many applications. Some azo dyes are quite harmful and poisonous, 9 and even those that are not toxic, like acid red 18, can be harmful if used in excess.10 Therefore the importance of their removal/decolorization 11-13 and their determinations [14][15][16][17] solvent (up to 3 mL). 44 To overcome these problems, in our previous work we introduced a micro-cloud point extraction (MCPE) technique. 45 While sustaining the merits of CPE, in MCPE water bath step is completely eliminated and the consumption of toxic organic solvents has been reduced from a few mL to a few ten μL. These make MCPE a fast, inexpensive, and green technique.In this paper MCPE was successfully applied for the determination of three azo dyes, orange G, methyl orange, and acid red 18 (Figure 1) in tap and wastewater samples. Acid red 18 (Panceau 4R) is a popular food color 46 and many methods have been proposed for its determination. 47,48 Methyl orange (acid orange 52 or gold orange) and orange G (orange gelb or wool orange) have many applications as textile dyeing stuff and staining agents in laboratories. These three dyes are of the most abundant used dyeing agents throughout the world and therefore can find their way to environmental sources as hazardous pollutions. 49,50 To our best knowledge this is the first report of determination of theses dyes with cloud point procedure. Non-ionic surfactant, triton X-114, was used as the extractant phase. Experimental InstrumentA Shimadzu UV-Vis spectrophotometer, UV-160 (Kyoto, Japan), equipped with two microcells (10 μL capacity, Star...

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“…Synthetic dyes are widely used in several industries such as textile, paper, printing, cosmetics, pharmaceuticals, color photographyand as an additive in petroleum industry [1][2][3]. Dyes are classified either on the basis of its structural characteristics, dyeing process or application [4].…”

Section: Introductionmentioning

confidence: 99%

Production, Purification and In-silico Characterization of Azoreductase Enzyme Azor1 KF803342 from Pluralibacter gergoviae Involved in Dye Degradation

Purohit¹,

Desai²

2014

J Bioremed Biodeg

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Colorants for Foods, Drugs, Cosmetics, and Medical Devices

Cited by 42 publications

References 12 publications

Nisin based stabilization of novel fruit and vegetable functional juices containing bacterial cellulose at ambient temperature

Nisin based stabilization of novel fruit and vegetable functional juices containing bacterial cellulose at ambient temperature

Application of a Novel Micro-Cloud Point Extraction for Preconcentration and Spectrophotometric Determination of Azo Dyes

Production, Purification and In-silico Characterization of Azoreductase Enzyme Azor1 KF803342 from Pluralibacter gergoviae Involved in Dye Degradation

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