title: Development of HPLC method by UV-VIS detection for the quantification of phenolic acids in different Ocimum sanctum Linn. extracts.
abstract: A simple and rapid chromatographic method has been developed for the simultaneous determination of five phenolic acids including Gallic acid, Chloroganic acid, Syringic acid, Benzoic acid and Vanillic acid by HPLC with UV-VIS detector. These Phenolic acids were separated by analytical column Intersil ODS-3 C18, a gradient elution system of ACN and acidified water solution with 1ml/min flow rate and quantified in a total run of 30 minutes at 210nm wavelength. In the quantitative analysis of these compounds showed good regression (0.995-0.999). The limit of detection [LOD] and limit of quantification [LOQ] of these compounds were in the range of 0.15-0.46 and 0.42-2.47 βg/mL. The average recoveries were between 95.8-103.1% and their RSD values were less than 3.34%. By the proposed method Gallic acid, Chloroganic acid and Syringic acid were found and quantified in Methanolic, Ethanolic and Acetonic extract of Ocimum sanctum Linn. leaves. While the two other phenolic acids benzoic acid and vanillic acid was not found in the extracts of Ocimum sanctum Linn. leaves.
authors.affiliation: Institute of Chemical Sciences, University of Peshawar, Peshawar, Pakistan / Pakistan Council of Scientific and Industrial Research Peshawar, Peshawar, Pakistan.
authors.lastname: Shafqatullah
authors.affiliation: Institute of Chemical Sciences, University of Peshawar, Peshawar, Pakistan.
authors.forename: Rasool
authors.initials: R
authors.lastname: Khan
authors.affiliation: Institute of Chemical Sciences, University of Peshawar, Peshawar, Pakistan.
authors.forename: Waseem
authors.initials: W
authors.lastname: Hassan
authors.affiliation: Pakistan Council of Scientific and Industrial Research Peshawar, Peshawar, Pakistan.
authors.forename: Arshad
authors.initials: A
authors.lastname: Hussain
authors.affiliation: Islamia College University of Peshawar, Peshawar, Pakistan.
authors.lastname: Asadullah
authors.affiliation: Islamia College University of Peshawar, Peshawar, Pakistan.
authors.forename: Khaliqur
authors.initials: K
authors.lastname: Rehman
authors.affiliation: Pakistan Council of Scientific and Industrial Research Peshawar, Peshawar, Pakistan.
authors.forename: Javid
authors.initials: J
authors.lastname: Ali
mesh_terms: D002851:Chromatography, High Pressure Liquid / Q000379:methods*; D062385:Hydroxybenzoates / Q000032:analysis*; D057230:Limit of Detection; D031339:Ocimum / Q000737:chemistry*; D010936:Plant Extracts / Q000032:analysis*
chemical_list: D062385:Hydroxybenzoates; D010936:Plant Extracts; C017616:phenolic acid