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Sensory Evaluation and Bioavailability of Red Ginseng Extract(Rg1, Rb1) by Complexation with ${\gamma}$-Cyclodextrin  

Lee, Seung-Hyun (R&D Center, Bioland Ltd.)
Park, Ji-Ho (R&D Center, Bioland Ltd.)
Cho, Nam-Suk (R&D Center, Bioland Ltd.)
Yu, Heui-Jong (R&D Center, Bioland Ltd.)
You, Sung-Kyun (College of Pharmacy, Chungnam National University)
Cho, Cheong-Weon (College of Pharmacy, Chungnam National University)
Kim, Dong-Chool (College of Pharmacy, Chungnam National University)
Kim, Young-Heui (R&D Center, Bioland Ltd.)
Kim, Ki-Ho (R&D Center, Bioland Ltd.)
Publication Information
Korean Journal of Food Science and Technology / v.41, no.1, 2009 , pp. 106-110 More about this Journal
Abstract
In order to reduce the bitter taste and improve the bioavailability of red ginseng extract(RGE), inclusion complexes (RGE-CD) of the extract with ${\alpha}-,\;{\beta}-,\;{\gamma}$-cyclodextrin were prepared and studied for their sensory quality and bioavailability compared to RGE. By complexation, the bitter taste-reducing efficacies of ${\alpha}$-CD and ${\beta}$-CD were much lower than that of ${\gamma}$-CD. In comparative sensory analysis for the bitter taste, RGE-${\gamma}$-CD10, prepared using 10%(w/w) of ${\gamma}$-CD, showed a score of 1.93(decreased by about 78%) compared to RGE as the control. In addition, in sensory analysis for flavor, RGE-${\gamma}$-CD10showed a score of 5.60. Upon increasing the amount of ${\gamma}$-CD to 15%(w/w) and 20%(w/w), respectively, the bitter taste of RGE-${\gamma}$-CD was removed and the flavor of RGE disappeared(scores of 2.67 and 1.67, respectively). Therefore RGE-${\gamma}$-CD10 was chosen as an optimum. The same dosages of RGE and RGE-${\gamma}$-CD10 were orally administered to SD(Sprague-Dawley) rats on a saponin basis, and the plasma concentrations of ginsenoside Rg1 and Rb1 were measured over time to estimate the average AUC(area under the plasma concentration versus time curve) of the ginsenosides. After the oral administration, there were no significant differences in the AUC values of the RGE and RGE-${\gamma}$-CD 10 groups for ginsenoside Rg1. However, AUC values for ginsenoside Rb1 were $25.8{\mu}g{\cdot}hr/mL$ in the RGE group and $81.5{\mu}g{\cdot}hr/mL$ in the RGE-${\gamma}$-CD 10 group, respectively. Therefore, the bioavailability of ginsenoside Rb1 in the RGE-${\gamma}$-CD 10 group was significantly higher by up to 315% compared with that in the RGE group(p = 0.0029). These results show that the bitter taste of RGE can be simultaneously removed by the complexation of RGE and ${\gamma}$-CD(RGE-${\gamma}$-CD) along with increased bioavailability.
Keywords
sensory evaluation; bioavailability; red ginseng extract; ${\gamma}$-cyclodextrin; complexation;
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