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What is basic ferric acetate test?
The basic ferric acetate test is a chemical test used to detect the presence of phenolic hydroxyl groups in a compound. When a compound containing phenolic hydroxyl groups is added to a solution of ferric acetate in a basic environment, a colored complex is formed. The intensity of the color change indicates the strength of the phenolic hydroxyl groups present in the compound.
What color is Lugol's solution prior to changing color?
Lugol's solution is a solution of iodine (1-5%) and potassium iodide in water. So the solution should have the pale color of iodine and the color should be pale (light) brown.
How do you remove phenolic yellowing from material?
One method to remove phenolic yellowing from material is to use a solution of hydrogen peroxide and water, and apply it to the affected areas. Another approach is to expose the material to sunlight, as UV light can help to break down the yellowing compounds. Additionally, using a cleaning solution containing enzymes specifically designed to break down yellowing agents may also be effective.
What is the color of iron (III) chloride solution?
The color of iron (III) chloride solution is brown.
Why incubate the samples at 37C in the total phenolic assay?
Incubating the samples at 37°C in the total phenolic assay helps to promote the activity of the enzymes responsible for phenolic compound extraction and detection. This temperature mimics physiological conditions and enhances the efficiency of phenolic compound extraction from the sample matrix.
What is the mechanism of ferric chloride test?
The ferric chloride test is used to detect the presence of phenolic compounds in a substance. It involves adding ferric chloride solution to the sample, and if phenolic compounds are present, a colored complex forms due to the formation of iron-phenol complexes. The intensity of the color change can be used to estimate the concentration of phenolic compounds in the sample.
Why protein change color with million's reagent?
Millon's solution detects phenolic compounds, which includes proteins and some non-proteins. Phenolic compounds are classified as having a hydroxyl group, or an OH, bonded directly to a hydrocarbon.
What is basic ferric acetate test?
The basic ferric acetate test is a chemical test used to detect the presence of phenolic hydroxyl groups in a compound. When a compound containing phenolic hydroxyl groups is added to a solution of ferric acetate in a basic environment, a colored complex is formed. The intensity of the color change indicates the strength of the phenolic hydroxyl groups present in the compound.
What is responsible for the color reaction for the millon'e test?
The color reaction in the Millon's test is due to the formation of a red complex between phenolic hydroxyl groups of tyrosine and Millon's reagent (mercury in nitric acid solution). This complex forms as a result of the oxidative reaction between the tyrosine residues and the reagent.
What color is Lugol's solution prior to changing color?
Lugol's solution is a solution of iodine (1-5%) and potassium iodide in water. So the solution should have the pale color of iodine and the color should be pale (light) brown.
What is biphenol a?
A biphenol is any compound which has two phenolic hydroxy groups, such a phenolic derivative of biphenyl.
How do you remove phenolic yellowing from material?
One method to remove phenolic yellowing from material is to use a solution of hydrogen peroxide and water, and apply it to the affected areas. Another approach is to expose the material to sunlight, as UV light can help to break down the yellowing compounds. Additionally, using a cleaning solution containing enzymes specifically designed to break down yellowing agents may also be effective.
What is phenolic yellowing?
Phenolic yellowing is a type of yellow discoloration that can occur on textiles made from certain fibers, such as nylon and polyester, due to exposure to heat, light, or chemical reactions. It is caused by the oxidation of phenolic antioxidants present in the fibers, leading to a yellow or brownish hue on the fabric surface.
What is the color of iron (III) chloride solution?
The color of iron (III) chloride solution is brown.
Why is ferric chloride used in modified borntrager's test?
Ferric chloride is used in modified Borntrager's test as a reagent to detect the presence of phenolic compounds in a sample. It forms a colored complex with phenols, which helps in identifying the presence of phenolic substances in the test solution.
What kind of phenolic resins resol or novolac are suitable for making phenolic foam?
i make the phenolic foam out of both of them in the same formula it works out fairly well but i am engineering it to get top performance out of the polymers.
What is an arylsulphotransferase?
An arylsulphotransferase is a a sulphotransferase enzyme which transfers a sulphate group from phenolic sulphate esters to a phenolic acceptor substrate.
