What is Folin-Ciocalteu method used for?
The Folin-Ciocalteu (F-C) Assay was developed in 1927 for the measurement of tyrosine (1). The reagent consists of a mixture of sodium molybdate, sodium tungstate and other reagents. Upon reaction with phenols, it produces a blue color which absorbs at 765 nm.
How do you analyze total phenolic content?
The total phenolic content could be determined using UV spectrophotometer . The oxidizing reagent was Folin–Ciocalteu reagent. Add to 0.5 ml of the sample (10 mg in 10 ml solvent), about 2.5 ml of Folin–Ciocalteu reagent (10 times diluted with distilled water) and 2 ml of Na2CO3 (75 g/l).
Why is total phenolic content important?
Phenolic compounds are important plant constituents with redox properties responsible for antioxidant activity [22]. The hydroxyl groups in plant extracts are responsible for facilitating free radical scavenging.
What is the role of Folin reagent in protein estimation?
Quantification and Analysis of Proteins Lowry adds phosphomolybdic/phosphotungstic acid also known as Folin-Ciocalteu reagent. This reagent interacts with the cuprous ions and the side chains of tyrosine, tryptophan, and cysteine to produce a blue-green color that can be detected between 650 nm and 750 nm.
What is Folin reagent used for?
Folin’s reagent or sodium 1,2-naphthoquinone-4-sulfonate is a chemical reagent used as a derivatizing agent to measure levels of amines and amino acids. The reagent reacts with them in alkaline solution to produce a fluorescent material that can be easily detected.
How do you check for polyphenols?
Organic solvent extraction is the main method used to extract phenolics. Chemical procedures are used to detect the presence of total phenolics, while spectrophotometric and chromatographic techniques are utilized to identify and quantify individual phenolic compounds.
What does total phenolic content mean?
TPC activity is the process to figure out the amount of phenolic content in the samples. Phenolic compounds that contained in the plants have redox properties, and the properties allow them acting as antioxidants [6.
What is Folin-Ciocalteu phenol reagent?
Folin & Ciocalteu`s Phenol Reagent is suitable for determination of total protein by Lowry method. It is a mixture of phosphomolybdate and phosphotungstate used for the colorimetric assay of phenolic and polyphenolic antioxidants. 2N Concentration. Used in the Lowry method for determining protein concentration.