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http://dx.doi.org/10.3746/jkfn.2009.38.7.951

Antibacterial Activities of Et-OH Extract from Extruded White Ginseng on Tooth Decay Bacteria  

Son, Hyun-Jung (Dept. of Food Science and Technology, Kongju National University)
Han, Min-Soo (Dept. of Dental Technology, Hyejeon College)
Ryu, Gi-Hyung (Dept. of Food Science and Technology, Kongju National University)
Publication Information
Journal of the Korean Society of Food Science and Nutrition / v.38, no.7, 2009 , pp. 951-957 More about this Journal
Abstract
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 $100^{\circ}C$ and $140^{\circ}C$ 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 $100^{\circ}C$ barrel temperature against L.casei were 100 and 150 mg/mL respectively using broth assay method. The amount of glucosyltransferase (GTase) inhibitory content was the highest in extruded ginseng at $140^{\circ}C$ 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 $140^{\circ}C$ barrel temperature were more effective than Ex-$100^{\circ}C$, RG and WG.
Keywords
antibacterial activity; extrusion condition; ethanol extract; ginseng;
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