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KMID : 1134820080370030282
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Journal of the Korean Society of Food Science and Nutrition
2008 Volume.37 No. 3 p.282 ~ p.287
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Physiological Activities of Gardeniae Fructus Extracts by
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Jeong Hyun-Jin
Kim Sun-A
Kwon Joong-Ho
Kim Hyun-Ku
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Abstract
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Gardeniae Fructus (GF) is a fruit of Gardenia jasminoides Ellis (Rubiaceae) which has been used in
traditional medicine. It contains not only geniposide but also resveratrol, a kind of stilbene as a natural
antioxidant. In this study, we investigated physiological activities of GF extracts by measuring electron
donating ability (EDA), nitrite scavenging ability (NSA), super oxide dismutase (SOD)-like activity and
inhibitory effect of tyrosinase activity (ITA). As a solvent, it was extracted with water, 50 and 100% ethanol
using microwave. At the concentration of 6 mg/mL, EDA was the highest at 50% ethanol extract but the
lowest at 100% ethanol extract, 96.43±0.25% and 77.06±0.22% respectively. NSA showed the strongest activity
at 50% ethanol extract like EDA (6 mg/mL: 75.26±0.28%). ITAs were below 20% in all samples and their
activities reduced according to increasing concentration. Likewise, SOD-like activities decreased with
increasing concentration of extracts in all samples. In conclusion, GF extracts showed low SOD-like activities
and ITAs but EDAs and NSAs were fairly high; especially EDA of 50% ethanol extract (6 mg/mL) was high
as those of 0.1 and 1% L-ascorbic acid. Therefore the results suggest that GF extracts may be useful as
potential sources of natural antioxidants.
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KEYWORD
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Gardeniae Fructus, physiological activity, microwave-assisted extraction
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