본 연구는 마이크로파 저온진공건조 기술을 이용하여 고효율 인삼개발을 하고자 하였다. 홍삼 제조 공정에서 증삼 후 60-70℃에서 24시간 동안 건조하고 다시 40℃에서 72시간동안 건조한 열풍 건 조 홍삼과 증삼 후 마이크로파 저온진공건조기에서 900 watt, 2.45 MHz, 50 mmHg 조건으로 5시간동 안 건조하고 다시 750 mmHg로 2시간동안 건조한 홍삼으로 조직 관찰, 관능평가, 진세노사이드 및 조 사포닌 함량 변화 등을 비교하였다. 그 결과, 마이크로파 저온진공 홍삼은 색도가 밝은 색으로, 표면적 은 다공성 조직으로 변화하였으며, 향미를 높이고 쓴 맛을 크게 감소시킴과 동시에 단 맛을 증가시켜 종합적인 선호도를 높였다. 또한, 단시간에 진세노사이드 Rg1과 Rb1 함량을 열풍 건조 홍삼에 비해 1시 간대에서 약 6배, 8배가 증가되었으나, Rg3 함량에서는 큰 차이가 나타나지 않았다. 마지막으로 조사포 닌 함량은 10-20분대부터 크게 증가하여 이후 지속적으로 높은 함량이 나타났다. 이와 같은 결과를 종 합해보면, 마이크로파 저온진공홍삼은 열풍 건조 홍삼에 비해 다공성 조직 변화를 통해 단시간에 진세노 사이드 및 조사포닌에 대한 추출 수율을 높이고 향미와 식감을 개선시켜 홍삼에 대한 선호도를 높일 수 있음을 확인되었다.

This study was carried out to extract ginsenosides in by-products from honeyed red ginseng. Response surface methodology (RSM) was used to optimize the extraction conditions. Based on D-optimal design, independent variables were ethanol (extraction solvent) concentration (30-90%, v/v), extraction temperature (25-70oC), and extraction time (5-11 h). Extraction yield (Y1) and total ginsenosides (Y2) in the extract were analyzed as dependent variables. Results found that extraction yield increased with increasing extraction temperature and time, whereas it was decreased with increasing ethanol concentration. Similar trends were found for the content of ginsenosides in the extracts, except for ethanol concentration, which was increased with increasing ethanol concentration. Regression equations derived from RSM were suggested to coincide well with the results from the experiments. The optimal extraction conditions for extraction yield and total ginsenosides were an extraction temperature of 56.94oC, ethanol concentration of 57.90%, and extraction time of 11 h. Under these conditions, extraction yield and total ginsenoside contents were predicted to be 84.52% and 9.54 mg/g, respectively.

Red ginseng is a widely used dietary supplement and medicinal herb, and there are so many forms of ginseng products including tea, extract, capsule and jelly. The purpose of the present study was to propose some amendments on ginsenoside content of red ginseng products in Korea. For this purpose, we analyzed red ginseng products for simultaneous determination of 26 ginsenosides by ultra performance liquid chromatography with diode array detector. Some developmental aspects of Korea’s ginsenoside content standard regulations for red ginseng products are needed to be examined as follows : Firstly, we proposed that four ginsenosides (Rb1, Rg1, Rf and Rg3) would be detected in red ginseng products. Secondly, in case of red ginseng extracts, the sum of Rb1, Rg1 and Rg3 would be 4.0 mg/g. The two proposals are helpful to comprehensive evaluation of quality of red ginseng products. In conclusion,the scientific studies on amendment scheme of ginsenoside content standard regulation of red ginseng product are very important to fortify quality control.

This study investigated the physicochemical properties of Pekin duck breast meat obtained from ducks fed diets consisting different types of sipjeondaebo-tang by-products and red ginseng marc with fermented red koji during storage. A total of 180 Pekin ducks (0-day old) were divided into four groups, each consisting of three replicates (15 ducks per pen). This study investigated diets with four types of treatments: control (basal diet),1% blend powder, pelleted 1% blend, and coated pellets of 1% blend; the blend was a mixture of sipjeondaebo-tang by-products powder and red ginseng marc with fermented red koji. There was no significant difference (p>0.05) in duck breast meat pH on storage days 3 and 7, TBARS on storage days 0 through 7, and DPPH radical scavenging on storage days 0 and 7. However, the pH values on storage day 0 and DPPH radical scavenging on storage day 3 were significantly different (p<0.05) in the meats from control and treated diet fed ducks. Especially, on storage day 7, the breast meat from ducks treated with different types of sipjeondaebo-tang by-products and red ginseng marc with fermented red koji showed lower TBARS values and increased DPPH radical scavenging activity compared to the control. In conclusion, addition of different types of sipjeondaebo-tang by-product and red ginseng marc with fermented red koji to 1% blend might be helpful in increasing antioxidant effects and reducing product wastage.