• Journal of Ginseng Research
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• 제32권2호
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• pp.120-126
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• 2008

This study was carried out to investigate the some physicochemical properties of Korean red ginseng (Panax ginseng C.A. Meyer) water extract (RGWE) after heated with high temperatures above $100^{\circ}C$ for 2 hours. RGWEs were heated at 100, 110 and $120^{\circ}C$ for 2 hours by using autoclave. After RGWEs were heated at high temperature for 2 hours without not adjustment of pH, the changes of saponin, free sugars, mineral and color in the RGWEs were investigated. Total ginsenoside content in control was 1.99%, while those of RGWE were 1.65, 1.49 and 1.29% when treated at 100, 110 and $120^{\circ}C$, respectively. The contents of total ginsenoside showed decreased tendency as heating temperatures were increased. The ginsenoside-$Rh_{2}$ and $-Rg_{3}$, which have been reported as very stable red ginseng ginsenosides, showed relatively strong spots on TLC when RGWEs were heated at 110 and $120^{\circ}C$. In case of free sugars in RGWEs, fructose, glucose and maltose showed high contents when compared with control, while Fe, Ca and Mg ions showed very low contents. Value of L in RGWE treated with high temperature was almost the same with control, while values of a and b were increased. Values of a were increased from -0.86 of control to +0.04, +0.05 and +1.14 when treated with 100, 110 and $120^{\circ}C$, respectively. Values of b also were increased from 27.68 of control to 33.61, 33.61 and 37.42 when treated with 100, 110 and $120^{\circ}C$, respectively. Values of total color in RGWEs treated with high temperatures, E, were finally increased by values of a and b.

• Journal of Ginseng Research
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• 제41권4호
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• pp.572-577
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• 2017

Background: Panax ginseng Meyer is cultivated because of its medicinal effects on the immune system, blood pressure, and cancer. Major ginsenosides in fresh ginseng are converted to minor ginsenosides by structural changes such as hydrolysis and dehydration. The transformed ginsenosides are generally more bioavailable and bioactive than the primary ginsenosides. Therefore, in this study, hydrothermal processing was applied to ginseng preparation to increase the yields of the transformed ginsenosides, such as 20(S)-Rg3, Rk1, and Rg5, and enhance antioxidant activities in an effective way. Methods: Ginseng extract was hydrothermally processed using batch reactors at $100-160^{\circ}C$ with differing reaction times. Quantitative analysis of the ginsenoside yields was performed using HPLC, and the antioxidant activity was qualitatively analyzed by evaluating 2,2'-azino-bis radical cation scavenging, 2,2-diphenyl-1-picrylhydrazyl radical scavenging, and phenolic antioxidants. Red ginseng and sun ginseng were prepared by conventional steaming as the control group. Results: Unlike steaming, the hydrothermal process was performed under homogeneous conditions. Chemical reaction, heat transfer, and mass transfer are generally more efficient in homogeneous reactions. Therefore, maximum yields for the hydrothermal process were 2.5-25 times higher than those for steaming, and the antioxidant activities showed 1.6-4-fold increases for the hydrothermal process. Moreover, the reaction time was decreased from 3 h to 15-35 min using hydrothermal processing. Conclusion: Therefore, hydrothermal processing offers significant improvements over the conventional steaming process. In particular, at temperatures over $140^{\circ}C$, high yields of the transformed ginsenosides and increased antioxidant activities were obtained in tens of minutes.

• 한국식생활문화학회지
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• 제30권2호
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• pp.197-205
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• 2015

This study was conducted to investigate the bioconversion of ginsenosides as well as anti-inflammatory activities of fresh ginseng Kkakdugi during fermentation. Fresh ginseng Kkakdugi reached proper ripeness, pH 4.30, and acidity 1.69% at $15^{\circ}C$ after 10 days. Lactic acid bacteria grew until reaching $1.10{\times}10^9CFU/mL$ after 20 days of fermentation, and ${\beta}$-glucosidase activity increased from 1.154 to 1.885 units/g. The bioconversion of ginsenosides was confirmed based on increased content of Rg3, an aglycone, from 0.13 to 0.17 mg/g during fermentation through HPLC. Fresh ginseng Kkakdugi did not display cytotoxicity up to the concentrations of $80{\mu}g/mL$, regardless of ripening period. Nitrite production and expression of inflammation-related proteins, iNOS and COX-2, decreased in a dose-dependent manner regardless of ripening period. From these results, fresh ginseng Kkakdugi showed the bioconversion of ginsenosides to aglycone during the lactic acid fermentation as well as an anti-inflammatory effect through the reduction of NO production and iNOS and COX-2 expression.

• 한국산학기술학회논문지
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• 제12권9호
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• pp.3994-4000
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• 2011

본 연구는 우리나라 고유의 겔상 식품인 청포묵의 기능성을 높이고자 흑삼 농축액을 0, 1, 2, 3, 4% 수준으로 첨가하여 ginsenoside Rg3가 강화된 흑삼 청포묵을 제조하여 품질특성을 평가하였다. 흑삼농축액 첨가수준에 따른 흑삼 청포묵의 pH는 흑삼농축액을 첨가하지 않은 대조군에 비해 흑삼 농축액의 첨가 수준 증가에 따른 유의적인 차이는 나타나지 않았지만, 감소하는 경향을 보였으며 당도는 유의적으로 증가하였다. 색도는 명도(L값)의 경우 흑삼 농축액 첨가비율이 증가할수록 어두워져서 명도값이 유의적으로 감소되었다. 적색도(a값)는 흑삼 농축액 1% 첨가 시 가장 높았으며 2%, 3%, 4%로 첨가비율이 상승할수록 감소되었고 황색도(b값)는 흑삼농축액 첨가비율이 증가할수록 유의적으로 감소되었다. 물성은 흑삼농축액 첨가량이 증가할수록 경도, 검성 및 씸힘성은 유의적으로 감소한 반면에 부착성은 유의적으로 증가하였고, 탄성과 결합성은 유의적 차이가 없었다. 흑삼 청포묵의 맛, 색, 풍미 및 전체적인 기호도에 있어서 흑삼 농축액 3%가 첨가된 시료가 가장 높은 점수를 보여 가장 바람직한 첨가수준으로 보여진다.

• 한국작물학회지
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• 제54권4호
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• pp.458-463
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• 2009

본 연구는 백삼 추출액의 사포닌 함량을 높이고 품질과 관련된 특성을 증진 시킬수 있는 최적 추출 시간 및 온도를 밝히기 위하여 실시되었다. 백삼의 물 추출액의 총 ginsenosides 함량은 $75^{\circ}C$에서 18시간 추출액 8.32 mg/10ml, $85^{\circ}C$에서 6시간 추출액 5.93 mg/10 ml, $95^{\circ}C$에서 6시간 추출액 4.92 mg/10 ml으로 최고의 함량을 나타냈다. 항당뇨 작용을 나타내는 ginsenoside $Rb_2$와 Re을 합한 최고 함량은 $75^{\circ}C$에서 18시간 추출액 1.76 mg/10 ml, $85^{\circ}C$ 6시간 추출액 1.34 mg/10 ml, $95^{\circ}C$ 6시간 추출액 0.56 mg/10 ml이었으며, 항암 작용을 나타내는 $Rg_3$의 함량은 $75^{\circ}C$에서 36시간 추출액 1.67 mg/10 ml, $85^{\circ}C$에서 36시간 추출액 3.13 mg/10 ml, $95^{\circ}C$에서 24시간 추출액이 3.56 mg/10 ml이었다. 추출온도와 시간에 따른 이화학성의 변화는 추출온도가 높을수록, 추출시간이 길어질수록 pH는 낮아 졌으나 환원당, 탁도, 당도는 증가하였다. 따라서 백삼추출액을 제조할때 1차 추출에서는 사포닌 최고 함량 추출 온도와 시간으로 추출한 다음 다시 온도를 높게 2차 추출 하여 맛을 증진시켜 혼합하는 방법이 좋을 것으로 생각된다.

• 동의생리병리학회지
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• 제24권6호
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• pp.1034-1041
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• 2010

The oriental medicine Jangwonhwan, which is a boiled extract of 12 medicinal herbs/mushroom, has been prescribed for patients with cognitive dysfunction and it is originally from the Korean medical text, DonguiBogam(amnesia chapter). Recently, a modified recipe of Jangwonhwan (LMK02-Jangwonhwan) consisting of seven medicinal plants/mushroom, was shown to reduce ${\beta}$-amyloid deposition in the brain of Tg-APPswe/PS1dE9 mouse model of Alzheimer disease. The toxicity of LMK02 was investigated in SD rats by oral repeated adminstration for 4 weeks and we tried to determine test does for 13 weeks repeated study. Quality control of tablet form of LMK02 was established by estimating indicative components, Ginsenoside Rg3 of Red Ginseng and Decursin of Angelicagigas Nakai. The toxicity of LMK02 was investigated in 6 weeks old specific pathogen free (SPF) Sprageu-Dawley rats by oral administration. Each test group were consist of 5 male and 5 female and they received doses of 500, 1,000 and 2,000 mg/kg/day of test substance for 4 weeks. The clinical signs, death rate, body weight, food consumption, ophthalmic examination, urinalysis, hematological and serum biochemistry, organ weight and pathological changes were examined and compared with those of control group. Urinalysis : We observed increase of PRO(p<0.01), SG(p<0.01) in female rats of 1,000 mg/kg/day and 2,000 mg/kg/day(p<0.01). Also, we observed increase of pH and KET in female rats of 1,000 mg/kg/day(p<0.05) and of 2,000 mg/kg/day(p<0.01). WBC in female rats in 1,000 mg/kg/day and 2,000 mg/kg/day were on increase. Hematological test : We observed increase of MCV in male rats of 250 mg/kg/day. (p<0.05) Serum biochemistry test : We found increase of CHO in female rats of 2,000 mg/kg/day(p<0.05). During the experimental period, there were no animals dead or moribund. There were no treatment related changes of general symptom, food and water consumption, organ weight and autopsy According to the results of 4-week repeated dose range finding study, the highest dose was established as 1000 mg/kg for 13-week repeated dose toxicity study and we determined to put 2 more groups by common ratio two.