| dc.creator |
Anwar, Khoerul |
|
| dc.date.accessioned |
2020-06-15T03:57:19Z |
|
| dc.date.available |
2020-06-15T03:57:19Z |
|
| dc.identifier |
http://eprints.ulm.ac.id/1418/1/Abstract_Khoerul_Anwar_Revisi.pdf |
|
| dc.identifier |
Anwar, Khoerul THE INFLUENCE OF LEAF POSITION ON TOTAL PHENOLICS, FLAVONOIDS, AND FREE RADICAL SCAVENGING CAPACITY OF Aquilaria beccariana. THE INFLUENCE OF LEAF POSITION ON TOTAL PHENOLICS, FLAVONOIDS, AND FREE RADICAL SCAVENGING CAPACITY OF Aquilaria beccariana. |
|
| dc.identifier.uri |
https://repo-dosen.ulm.ac.id//handle/123456789/9956 |
|
| dc.description |
Each leaf had a different level of exposure to environmental conditions and may affect
the distribution of phytochemicals and antioxidant capacity in Aquilaria beccariana.
The aims of this study were to compare total phenolics, flavonoids, and free radical
scavenging of A. beccariana leaves at different stages of maturity. Leaves at different
positions from apex to base in a twig represented gradient increase in the leaf age
(young, mature, and old). The powder of dried A. beccariana leaves were macerated
using 96% ethanol. Levels of total phenolic were determined by Folin-ciocalteau
reagent, total flavonoids assay used FeCl3 reagent, and the antioxidant activity was
analyzed using 2,2-diphenyl-1-picrylhydrazyl (DPPH). The results showed that the level
of phenolics and flavonoids in mature leaves of A. beccariana was higher than the
young and old leaves. Level of phenolics in the young and old leaves was higher than
the flavonoids, while the level of phenolics and flavonoids in mature leaves was not
significantly different. The mature leaf of A. beccariana was the most potential as an
antioxidant with an IC50 value of 72.25+0.72 ppm. This study revealed that leaf
positions (age) influence the level of secondary metabolites and their antioxidant
properties.
Keywords: Aquilaria beccariana; flavonoids; phenolics; radical scavenging |
|
| dc.format |
text |
|
| dc.relation |
http://farmasi.unpad.ac.id/ispst2016/ |
|
| dc.relation |
http://eprints.ulm.ac.id/1418/ |
|
| dc.subject |
RS Pharmacy and materia medica |
|
| dc.title |
THE INFLUENCE OF LEAF POSITION ON TOTAL PHENOLICS,
FLAVONOIDS, AND FREE RADICAL SCAVENGING CAPACITY OF
Aquilaria beccariana |
|
| dc.type |
Article |
|
| dc.type |
PeerReviewed |
|