02004nas a2200241 4500008004100000245009000041210006900131260001500200300001200215490000700227520131400234653001601548653001501564653000901579653001201588653003001600100001901630700001601649700002101665700001901686700002101705856003601726 2020 eng d00aThe Antioxidant Activity of Sterculia stipulata Korth Woods and Leaves by FRAP Method0 aAntioxidant Activity of Sterculia stipulata Korth Woods and Leav cMarch 2020 a236-2390 v123 a

Background: Phenol compounds and flavonoids are known have antioxidant activity. Sterculia genus has secondary metabolite rich of phenols and flavonoids. Objective: The aim of this study of the activity antioxidants of Sterculia stipulata Korth. Woods and leaves by FRAP method. Materials and methods: Extraction done using n-hexane, ethyl acetate, and methanol. The methanol extract was determined antioxidant activity using the FRAP method and also determined the total phenols content, total flavonoids, and phytochemical screening. Results: The antioxidant activity of wood extract was 4.74 ± 1.03 FeEAC (mol/g) while leaves extract 41.17 ± 1.99 FeEAC (mol/g). Total phenols content for wood extract 16.46 ± 3.51 mg GAE/g, for leaves extract 141.62 ± 10.54 mg GAE/g. The total flavonoids content for woods extract was 27.99 ± 0.62 mg QE/g for leaf extract 41.45 ± 5.83 mg QE/g. The compounds of woods and leaves are the same; it is consist of terpenoids, alkaloids, phenols, flavonoids, saponins, terpenoids, and negatives for anthraquinone. Conclusion: The antioxidant activity of the leaves of Sterculia stipulata Korth. is greater than its wood activities.

10aAntioxidant10aFlavonoids10aFRAP10aPhenols10aSterculia stipulata Korth1 aPrastiwi, Rini1 aElya, Berna1 aHanafi, Muhammad1 aDesmiaty, Yesi1 aSauriasari, Rani uhttps://phcogj.com/article/1101