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KMID : 1134820090380070951
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Journal of the Korean Society of Food Science and Nutrition
2009 Volume.38 No. 7 p.951 ~ p.957
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Antibacterial Activities of Et-OH Extract from Extruded White Ginseng on Tooth Decay Bacteria
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Son Hyun-Jung
Han Min-Soo
Ryu Gi-Hyung
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Abstract
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In this study, antibacterial activity of extruded ginseng extract by 60 and 80% Et-OH were investigated by agar diffusion assay against two bacteria causing dental caries (Streptococcus mutans and Lactobacillus casei). Extrusion conditions were 20% moisture content 100℃ and 140℃ barrel temperature. The inhibition effect of 60% Et-OH ginseng extract was higher than 80% Et-OH ginseng extract. The minimum inhibitory concentration (MIC) of 80% Et-OH extruded ginseng extract at 140 and 100℃ barrel temperature against L.casei were 100 and 150 ㎎/mL respectively using broth assay method. The amount of glucosyltransferase (GTase) inhibitory content was the highest in extruded ginseng at 140℃ barrel temperature with 60% Et-OH. Moreover, n-hexane and n-butanol fraction ginseng extract had potential against tested bacteria. Our results demonstrated that antibacterial activities of extruded ginseng extract at 140℃ barrel temperature were more effective than Ex-100℃, RG and WG.
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KEYWORD
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antibacterial activity, extrusion condition, ethanol extract, ginseng
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