Antioxidant properties of various solvent extracts from wild ginseng leaves

Water, methanol and ethanol extracts of freeze-dried leaves of wild ginseng were examined for their antioxidant properties. All leaf extracts were capable of free radicals scavenging activity. Among solvent extracts of wild ginseng leaves, ethanol extract showed the highest DPPH, hydroxyl radical sc...

Full description

Saved in:
Bibliographic Details
Published in:Food science & technology 2006-01, Vol.39 (3), p.266-274
Main Authors: Jung, Chang-Hwa, Seog, Ho-Moon, Choi, In-Wook, Park, Mee-Weon, Cho, Hong-Yon
Format: Article
Language:English
Subjects:
antioxidant activity
Antioxidant properties
antioxidants
Biological and medical sciences
chelation
ethanol
Flavonoids
Food industries
free radical scavengers
Free radicals
freeze drying
Fundamental and applied biological sciences. Psychology
General pharmacology
Kaempferol
leaves
Medical sciences
medicinal plants
methanol
Panax ginseng
Pharmacognosy. Homeopathy. Health food
Pharmacology. Drug treatments
phenolic compounds
plant extracts
Quercetin
supercritical fluid extraction
Wild ginseng leaves
wild plants
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Water, methanol and ethanol extracts of freeze-dried leaves of wild ginseng were examined for their antioxidant properties. All leaf extracts were capable of free radicals scavenging activity. Among solvent extracts of wild ginseng leaves, ethanol extract showed the highest DPPH, hydroxyl radical scavenging and ferrous ion chelating activity. Otherwise, the highest superoxide radical scavenging activity was found in water extract followed by ethanol and methanol extracts of wild ginseng leaves. Ethanol extracts contained more phenolics (2333.2 mg/100 g) and flavonoids (1199.1 mg/100 g) than other extracts. These differences in concentrations of key antioxidants among various solvent extracts seemed to be responsible for their differences in antioxidant activities. When various solvent extracts were hydrolysed by acid, two aglycons of flavonoid, quercetin and kaempferol, were detected. According to the results obtained from this study, wild ginseng leaves showed marked antioxidant activities due to their abundant antioxidants.
ISSN:0023-6438
1096-1127
DOI:10.1016/j.lwt.2005.01.004