We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Evaluation of Antioxidant Activity and Phytochemical Screening of Leaves, Barks, Stems and Fruits of Alphitonia philippinensis (Rhamnaceae) From Brunei Darussalam.
- Authors
Ahmed, Jamiuddin; Salim, Kamariah Abu; Lim, Linda B. L.; Jama, Abdalla Mohamed
- Abstract
Phytochemical screening of Alphitonia philippinensis extracts revealed the presence of cardiac glycosides, tannins, saponins and steroids in different plant parts. Total phenolic content (TPC), total flavonoid content (TFC) and total flavonol content (TFlC) were measured using spectrophotometric methods where gallic acid and quercetin were the standards. Antioxidant activity of extracts was assessed using 1,1-diphenyl-2-picrylhydrazyl (DPPH), 2,2'-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) (ABTS), free radical scavenging and ferric reducing antioxidant power (FRAP) assays using ascorbic acid and trolox were used as standards. Among the four different crude methanol extracts studies, leaves showed highest antioxidant capacity. EC50 values of the leaves extract from DPPH and ABTS method found 32 and 45 µg/mL respectively. The higher antioxidant activity of the leaves extract could be correlated with the presence of higher total phenolic content, total flavonoid, and total flavonol contents. According to antioxidant contents and assay results leaves extract possesses highest antioxidant property following fruits, barks and stems.
- Subjects
BRUNEI; PLANT phenols; CARDIAC glycosides; STEROID saponins; GALLIC acid; FRUIT; VITAMIN C
- Publication
Pharmacognosy Journal, 2019, Vol 11, Issue 5, p951
- ISSN
0975-3575
- Publication type
Article
- DOI
10.5530/pj.2019.11.151