Color salmon

Lachs, m. salmon, -farbe, /. salmon color, salmon shade. 

Sturgeon caviar is gray or brown to black in color. Salmon caviar is yellow-red or red. Most caviar is imported from the Russian Fed. and Iran (Caspian Sea caviars). It readily decays and so must be kept refrigerated. A medium-size beluga sturgeon can provide 15-20 kg caviar. 

Cyanide is determined at concentrations greater than 1 ppm by making the sample alkaline with NaOH and titrating with a standard solution of AgN03, forming the soluble Ag(CN)2 complex. The end point is determined using p-dimethylaminobenzalrhodamine as a visual indicator, with the solution turning from yellow to a salmon color in the presence of excess Ag+. 

Animals that do not readily accept pelleted feeds may be enticed to do so if the feed carries an odor that induces ingestion. Color development is an important consideration in aquarium species and some animals produced for human food. External coloration is desired in aquarium species. Pink flesh in cultured salmon is desired by much of the consuming pubHc. Coloration, whether external or of the flesh, can be achieved by incorporating ingredients that contain pigments or by adding extracts or synthetic compounds. One class of additives that imparts color is the carotenoids. 

Theory and Equipment. Many diseases of the human body can be identified by visual appearance. Tumors in the upper gastrointestinal (GI) tract, for example, possess a characteristic salmon pink color (3). The presence of such a color can be an indication of disease. Endoscopy is the medical imaging tool used to detect such colors in the inside of hoUow internal organs such as the rectum, urethra, urinary bladder, stomach, colon, etc. An endoscope is the instmment used to perform endoscopy. Endoscopic imaging involves the production of a tme color picture of the inside of the human body using lenses and either hoUow pipes, a fiber optic bundle, or a smaU CCD camera. AU three use a large field-of-view, sometimes referred to as a fish eye, lens to aUow a 180° field of view. 

Detection and result The following hRf values (TLC, chloroform) were obtained carvacrol and thymol (red) 30—35, eugenol (salmon pink) 40 — 45 here the background was pale yellow colored. The visual detection limit was 200 — 500 ng per chromatogram zone. The colored zones faded after 1 to 2 hours. 

Analytical. It can be titrated with std base to a salmon colored phenolphthalein endpoint and can be quanty pptd from aq solns with tetraphenylarsonium chloride KSp of the complex in w is 6.9 x 10 9 (Ref 22). This procedure can be adapted to the analysis of compds, such as bis-(trinitroethyl) urea, which regenerate... 

In a 30 minute test the results obtained should not differ by more than 1 minute using different lots of paper. On being exposed to nitric oxide fumes, these papers slowly turn green, followed by a salmon pink coloration Methyl Violet Paper Test (Field Test for Pro pint Powders). This method of testing proplnts using 0.1N methyl violet paper directly in the containers in which the powder is stored, was developed at Picatinny Arsenal in 1928—29 (Refs 1 2), and was adopted by the Ordnance Dept to replace the Observation Test about 1931... 

Heat test. Salmon pink color in 20 mins ... 

For quantitative work, it is necessary to estimate the concentration of 5-amino-l-(P-D-ribofuranosyl)imidazole in aqueous solution. It seems that the only available method is the Bratton-Marshall assay, which was originally developed for the estimation of arylamines in biological fluids. The principle of the method is the spectrometric estimation of a salmon-pink colored dyestuff obtained by diazotation in situ, followed by coupling with /V-( 1 -naphthyl)ethyl-enediamine.65 The only remaining problem then is to know the molar extinction of this dye because pure samples of AIRs are not available. A value of 16800 at 520 nM was obtained for the dyes prepared from a model compound, 5-amino-l-cyclohexylimidazole-4-carboxylic acid (54), which is crystalline. A comparable molar extinction can be expected for the dye prepared from imidazole 55, if the carboxyl group does not exert too much influence on the chromophore. Actually, its influence is perceptible even with the naked eye, the dyestuff prepared from 53 having a somewhat different, wine-red color, with max>520 nM. The molar extinction for 55 is 17400 at 500 nM. When the decarboxylation of 54 was conducted under mild acidic conditions (pH 4.8, 50°C, 1 hour), estimation of 5-aminoimidazole 55 by the Bratton-Marshall method led to the conclusion that the reaction was almost quantitative.66 Similar conditions for the final decarboxylation were adopted in the preparation of samples of AIRs labeled with stable isotopes.58... 

Other applications — P-carotene is used in various pet foods as both a colorant and a precursor to vitamin A. It can be applied to an array of animal foods designed for dogs, cats, fish, and birds. The antioxidant and precursory vitamin A properties increase the appeal and application of P-carotene in pet foods. Additionally, P-carotene is an important carotenoid that may assist in improving the color of birds, fish, and crustaceans. Dunaliella salina can serve as a source of algal feed for fish and crustaceans. The microalgae provide carotenoids that are essential for flesh coloring, particularly of salmon and crustaceans. 

Signs Raised black points within gray areas appear on withered twigs. Sprouts grow from the base of the affected branches. Ultimately the entire tree is affected and it dies. Interior wood of infected twigs has a characteristic salmon-pink or reddish orange color. ... 

Maki zushi contains strips of fish or vegetables rolled in rice and wrapped in thin sheets of nori, or dried seaweed. Popular ingredients include smoked salmon, fresh crab, shrimp, octopus, raw clams, and sea urchin. Americans have invented many of their own maki zushi combi-(50) nations, including the California roll, which contains imitation crabmeat and avocado. They have also made innovations in the construction of maki zushi. Some American sushi bars switch the placement of nori and rice, while others don t use nori, and instead roll the maki zushi in fish roe. These colorful, crunchy eggs add to the visual and taste appeal of (55) the dish. 

To one portion of the filtrate add ferric chloride TS. A positive reaction is indicated by the formation of a salmon-colored precipitate. 

An identification test has been established by the AO AC, 16 edition [14]. The solution is made alkaline with few drops of NH4OH, excess ammonia is expelled, and the residue dissolved in few mL of hot water. The solution may be filtered if necessary. At that point a few drops of aqueous 0.5 % FeCl3 solution is added, and a salmon color precipitate will form. 

Recently, mutation spectrum of flower color and flower shape of carnation was also investigated by Okamura et al. [108]. In the carnation variety Vital (spray-type, cherry pink flowers with frilly petals) tested, flower color mutants such as pink, white, and red were obtained by X-ray irradiation, whereas the color spectrum of the mutants obtained by carbon ion irradiation was wide such as pink, light pink, salmon, red, yellow, and complex and striped types. Furthermore, many kinds of round shape of petals were induced in addition to flower colors. These indicate that ion beams can induce novel flower color and shape with high frequency. 

The U.S. Food and Drug Administration (FDA) regulates the addition of nitrate and nitrite salts to fish products. Maximum permitted levels vary among products and types of fish, with up to 500 ppm residual sodium nitrate or 200 ppm sodium nitrite permitted as a preservative and color fixative in smoke cured sable fish, shad, or salmon (Code of Federal Regulations, 1981a,b Committee on Nittite and Alternative Curing Agents in Food, 1981). 

I jAcidity or Alkalinity. Pour two 100 ml samples, accurately measured in a 100 ml graduate, into a 400 ml beaker contg 200 ml distd w. Add 5 drops of methyl-red indicator (prepd by dissolving 0.1 g of MR in 100 ml of 70% alcohol and neutralized to a salmon pink color). If the soln is yel, titrate with N/10 sulfuric acid and if red, titrate with N/10 NaOH soln. Calculate alkalinity as NHj and acidity as nitric acid... 

Trimethyl tellurium bromide, (CH3)3TeBr, is obtained from the /3-base and hvdrobromic acid. It forms large, transparent, colourless tablets, slowly decomposing between 250° and 280° C., readily soluble in cold water but almost insoluble in organic solvents. The neutral solution in water contains bromine ions, and gives no precipitate or coloration with colourless hydriodic acid. It unites with ferric chloride. giving a complex which crystallises as salmon-coloured needles and forms a complex salt with stannic bromide. 

Methyl Violet Paper, Definite Salmon Color, Decomposition, Compound Minutes Minutes Minutes... 

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