The Study of Total Phenolic Compounds and Antioxidant Activity of Asparagus racemosus willd. Extracts
Keywords:
Total Phenolic Compounds, Antioxidant, Asparagus racemosus willdAbstract
This research investigates the total phenolic content and antioxidant activity of the herbal plant Asparagus racemosus willd (Raksamsib) extracts which using different solvents from Sakon Nakhon, Chaiyaphum, and Phetchabun provinces. The total phenolic content was tested by the Folin-Ciocalteu method, and the antioxidant activity was tested by the DPPH radical scavenging assay. The results showed that the total phenolic content from Phetchabun extracted with methanol was the highest, which measured 180.63±2.39 mg GAE/g, followed by the methanol extract from Sakon Nakhon, which measured 163.38±2.48 mg GAE/g. The lowest phenolic content was found in the 95% ethanol extract from Sakon Nakhon, which measured 62.47±2.00 mg GAE/g. As for the antioxidant activity test, the 95% ethanol extract from Sakon Nakhon exhibited the best antioxidant activity with IC50 of DPPH at 0.16 µg/g extract, followed by the methanol extract from Sakon Nakhon with an IC50 of DPPH at 0.19 µg/g extract.
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