Claim · model-written summary
Extracts preserved one month at 4 °C showed a 1.25% decrease in FRAP relative to fresh extracts, indicating stable activity.
- Taxon
- Tabernaemontana heyneana
Tabernaemontana alternifoliat0 - Treatment
- preserved leaf extractse0
- Outcome
- FRAPe0
- Direction
- decreasee0
- Value
- 1.25%e0
- Comparator
- fresh extractse0
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleSettingQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Tabernaemontana heyneana”
e0“the preserved leaf extracts have proved to possess a stable antioxidant activity compared to fresh extracts (FRAP=1.25% decrease, CUPRAC = 3.88% decrease, metal chelation =3.36% decrease and DPPH = 2.05% decrease)”
Title
Evaluation of antioxidant properties of Tabernaemontana heyneana Wall. leaves
Thiyagarajan Sathishkumar; R Baskar 2012
Other claims from this paper (14)
- Observation Fresh T. heyneana leaf extracts contained total polyphenolic content of 11.4 ± 0.17 mg/g tissue.
- Observation Fresh extracts contained total flavonoids of 4.3 ± 0.17 mg rutin equivalents/g tissue.
- Observation Fresh extracts contained ascorbic acid at 5.0 ± 0.01 mg/g tissue.
- Observation The methanolic leaf extract (METH-L) possesses remarkable reducing power for ferrous, cupric and cerium (IV) ions.
- Observation METH-L chelated metal ions at IC50 = 549 μg/ml.
- Observation METH-L inhibited hydroxyl radicals at IC50 = 577 μg/ml.
- Observation METH-L inhibited ABTS radicals at IC50 = 537 μg/ml.
- Observation METH-L inhibited DPPH radicals at IC50 = 507 μg/ml.
- Observation METH-L showed superoxide radical scavenging activity of 69.07% ± 11.88.
- Observation METH-L showed nitric oxide radical scavenging activity of 74.73% ± 10.12.
- Intervention effect Preserved extracts showed a 3.88% decrease in CUPRAC relative to fresh extracts.
- Intervention effect Preserved extracts showed a 3.36% decrease in metal chelation relative to fresh extracts.
- Intervention effect Preserved extracts showed a 2.05% decrease in DPPH activity relative to fresh extracts.
- Observation METH-L possesses significant antioxidant activity relative to the other solvent extracts.