Phytochemical analysis and antioxidant efficacy of Chrysojasminum fruticans (L.) Banfi in Syrian flora

Abstract

This study investigates the antioxidant properties of Chrysojasminum fruticans (L.) Banfi through a series of assays to measure the total phenolic content (TPC), total flavonoid content (TFC), and free radical scavenging activity using the 2,2-diphenyl-1-picrylhydrazyl (DPPH) assay, to ensure that it can be used as an antioxidant drug. The TPC, TFC and DPPH assay were performed using spectrophotometric method, and in terms of a linear standard curve for gallic acid, Quercetin, Vitamin C respectively. The.aqueous extract of the flowers exhibited the highest concentration of phenolics, reaching 81.9 mg GAE (Gallic Acid Equivalent) per gram of (Dry Extract) DE, Conversely the ethanolic extract from the fruits demonstrated the lowest phenolic content, with a mere 0.249 (mg GAE/g DE). the aqueous flower extract demonstrated the highest flavonoid concentration, achieving an impressive 113.584 mg quercetin equivalents per gram of DE (mg QUE/g DE). In contrast, the methanolic fruit extract exhibited the lowest flavonoid concentration, measured at a mere 0.695 (mg QUE/g DE). Additionally, the methanolic flower extract demonstrated superior free radical scavenging activity, requiring only 0.348 mg/mL to inhibit 50 % of DPPH radicals, Conversely, the methanolic fruit extract exhibited the least antioxidant activity, as reflected by its highest IC50 value of 1.996 mg/mL.These results underscore Chrysojasminum fruticans (L.) Banfi potent antioxidant capacity and its established role in traditional medicine practices globally, and encourage to be included as a drug contributing to the treatment of many chronic diseases such as diabetes and cardiovascular diseases, after conducting the necessary clinical studies.