In the present study an approach was made to know about the various phytochemical constituents of Hibiscus rosa sinensis ethanolic flower extract for which the GC-MS analysiswas the opted method. Many phytoconstituents like dodecanoic, ethyl ester (RT: 13.84), heptadecanoic acid, ethylester (RT: 27.51),6,6-Dimethyl-2-(4,8-dimethyl-3,7-nonadienyl)-bicyclo(3.1.1)hept-3-ene (RT: 27.51) etc. were isolated by this method. One of the other objectives of the investigation was also to check the effect of Hibiscus rosa sinensisethanolic flower extract, as a potential natural antioxidant. In vitro total antioxidant capacity via hydrogen peroxide scavenging assay was performed during the investigation. For this purpose ascorbic acid (ASA) which is known to be a potent was used as a reference. The crude flower extract showed a concentration dependent hydrogen peroxide scavenging activity.
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