KMID : 1134820110400101391
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Journal of the Korean Society of Food Science and Nutrition 2011 Volume.40 No. 10 p.1391 ~ p.1396
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Antioxidant and Acetylcholinesterase Inhibitory Activities of Subcritical Water Extracts from Houttuynia cordata Thunb
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Jo Eun-Kyung
Lee Seung-Cheol
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Abstract
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Houttuynia cordata Thunb powder (0.05 g) was placed in a stainless vessel containing 10 mL of water, and subcritical water (SCW) extraction was carried out at various temperatures (50, 100, 200, and 300¡É) for 10, 30, and 60 min. SCW treatment significantly affected physiologically important compounds, antioxidant activity, and acetylcholinesterase inhibitory activity of H. cordata Thunb extracts. H. cordata Thunb extracted at 300¡É for 30 min had the highest quercetin content, DPPH radical scavenging activity, total phenolic content, and acetylcholinesterase inhibitory activity, whereas the extract at 100¡É for 10 min possessed the highest flavonoid content. The highest ABTS radical scavenging activity was found in H. cordata Thunb extracted at 200 and 300¡É for 60 min. These results indicate that SCW extraction might be a useful processing method for obtaining valuable materials from H. cordata Thunb.
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KEYWORD
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Houttuynia cordata Thunb, subcritical water extraction, quercetin, antioxidant activity, acetylcholinesterase inhibitory activity
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