How many phenolic compounds are there?
The main classes of phenolic compounds found in fruits are: (1) phenolic acids, (2) stilbenes, (3) lignans, (4) flavonoids, and (5) tannins or proanthocyanidins.
What is total phenol?
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 a phenolic group?
Phenols are organic compounds which contain a hydroxyl (—OH) group attached to a carbon atom in a benzene ring. Their chemical behavior is very distinct from that of alcohols, because they are not capable of undergoing the same oxidation reactions that alcohols participate it.
What is total phenolic content activity?
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.
How do you calculate total phenolic contents?
The total phenolic contents in all samples was calculated the using the formula: C = c V/m where, C = total phenolic content mg GAE/g dry extract, c = concentration of gallic acid obtained from calibration curve in mg/mL, V = volume of extract in ml, m = mass of extract in gram.
How do you calculate total phenol content?
What is the commercial method of preparation of phenol?
What is the commercial method of preparation of phenol? Explanation: The Hock process (cumene-phenol process, cumene process) is an industrial process for developing phenol and acetone from benzene and propylene. The term stems from cumene (isopropyl benzene), the intermediate material during the process.
How do you test for 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).
How do you calculate total phenolic content?
The total phenolic content can be calculated as natural compound (gallic acid) equivalent (GAE) by the following equation: T= C XV/M .