Claim · model-written summary
The minimum total flavonoid content was recorded for the water extract, at 206.26 mg quercetin equivalent per gram.
Kirkia wilmsiiVerbatim
e5“A maximum total flavonoid content of (917.02 ± 0.10) mg quercetin equivalent per gram and a minimum of (206.26 ± 0.10) mg quercetin equivalent per gram were recorded for methanol and water, respectively”
t0“solvent extracts of Kirkia wilmsii tubers”
Title
Phytochemical and antioxidant properties of different solvent extracts of Kirkia wilmsii tubers
Kayini Chigayo; Paul Eanas Lesedi Mojapelo; Simon Mnyakeni-Moleele; et al. Asian Pacific Journal of Tropical Biomedicine 2016. doi:10.1016/j.apjtb.2016.10.004
Other claims from this paper (17)
- Intervention effect The highest extract yield of 52.9% was obtained using 80% methanol.
- Intervention effect The lowest extract yield of 7.3% was obtained using ethanol at 60 min.
- Observation Six of the 12 solvent extracts gave yields higher than 5%.
- Observation The other six solvent extracts gave yields less than 1%.
- Observation Total phenolic content of the extracts ranged from 45.32 to 122.84 mg gallic acid equivalent per gram.
- Observation The maximum total flavonoid content was recorded for the methanol extract, at 917.02 mg quercetin equivalent per gram.
- Intervention effect The methanol extract had significantly higher flavonoid content than all other extracts.
- Intervention effect The 80% methanol, methanol/chloroform/water and 60% methanol extracts had significantly higher yields than ethanol, methanol and water extracts.
- Intervention effect The scavenging profiles of K. wilmsii extracts were significantly lower than that of ascorbic acid.
- Observation IC50 for the methanol extract was 129.94 μg/mL, the lowest of the extracts.
- Observation IC50 for the water extract was 225.04 μg/mL.
- Observation An IC50 value of 56.52 μg/mL was obtained with ascorbic acid.
- Recommendation Ethanol, methanol, methanol/chloroform/water, 80% methanol, 60% methanol and water can be used as suitable phytochemical extraction solvents for K. wilmsii tubers.
- Observation The analysis showed high levels of phenolic compounds and flavonoids in the tubers.
- Mechanism Phenols and flavonoids could be responsible for the radical scavenging activity of the extracts.
- Observation Phytochemical screening confirmed the presence of phenolics, flavonoids and terpenoids.
- Observation Phytochemical screening confirmed the presence of tannins, cardenolide deoxy sugars and reducing sugars.