• Korean Journal of Plant Resources
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• v.19 no.1
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• pp.139-143
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• 2006

To increase the contents of functional ginsenosides by conversion, especially ginsenoside-$Rg_3$ and $Rh_2$, the extracts of red ginseng were treated with high temperature and citric acid or apricot extract. When the extracts were subject to $120^{\circ}C$ for 2 hours, the content of ginsenoside-$Rg_3$ was increased 2 times than in control. When the extracts were subject to $120^{\circ}C$ and acidic conditions adjusted with citric acid, the ginsenoside-$Rg_3$, was detected 2.8 times, but other ginsenoside were decreased heavily to 65%. When the extract were treated with for 12 hours at $80^{\circ}C$, the content of ginsenoside-$Rg_3$ was increased to 3.3 times, Also, when the red ginseng extracts were treated with apricot extract, the ginsenoside-$Rg_3$ was detected to 4 times than in control, but other ginsenoside were decreased lightly to 35%, not same as at the $120^{\circ}C$ treatment.

• Journal of Ginseng Research
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• v.45 no.6
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• pp.654-664
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• 2021

Background: Ginsenoside Rg3, isolated from Panax ginseng, has anti-inflammatory and anti-tumor activities. It is known to reduce inflammation in acute lung injury in mice, and to reduce the expression of inflammatory cytokines and COX-2 in human asthmatic airway epithelium. In this study, we attempted to determine whether ginsenoside Rg3 inhibits airway inflammation, oxidative stress, and airway hyperresponsiveness (AHR) in the lungs of asthmatic mice. We also investigated its effects on oxidative stress and the inflammatory response in tracheal epithelial cells. Methods: Asthma symptoms were induced in female BALB/c mice sensitized with ovalbumin (OVA). Mice were divided into five groups: normal controls, OVA-induced asthmatic controls, and asthmatic mice treated with ginsenoside Rg3 or prednisolone by intraperitoneal injection. Inflammatory BEAS-2B cells (human tracheal epithelial cells) treated with ginsenoside Rg3 to investigate its effects on inflammatory cytokines and oxidative responses. Results: Ginsenoside Rg3 treatment significantly reduced eosinophil infiltration, oxidative responses, airway inflammation, and AHR in the lungs of asthmatic mice. Ginsenoside Rg3 reduced Th2 cytokine and chemokine levels in bronchoalveolar lavage fluids and lung. Inflammatory BEAS-2B cells treated with ginsenoside Rg3 reduced the eotaxin and pro-inflammatory cytokine expressions, and monocyte adherence to BEAS-2B cells was significantly reduced as a result of decreased ICAM-1 expression. Furthermore, ginsenoside Rg3 reduced the expression of reactive oxygen species in inflammatory BEAS-2B cells. Conclusion: Ginsenoside Rg3 is a potential immunomodulator that can ameliorate pathological features of asthma by decreasing oxidative stress and inflammation

• Natural Product Sciences
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• v.27 no.1
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• pp.10-17
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• 2021

The purpose of this study is to develop a new method of producing tienchi seng (notoginseng, Panax notoginseng) extracts featuring high concentrations of the ginsenoside Rg3, Rg5, and Rg6, special components of Korean red ginseng. The chemical transformation from ginseng saponin glycosides to prosapogenin was analyzed by HPLC. Tienchi seng was heat-processed at 100℃ and the optimum conditions were identified. The highest concentrations of total saponin (29.723%) and the ginsenoside Rg3 (1.769%), Rg5 (5.979%), and Rg6 (13.473%) were produced at 48 hours. Also, when tienchi seng was subjected to the ultrasonic thermal fusion (100℃) process, the concentrations of total saponin (30.578%), ginsenoside Rg3 (2.392%), Rg5 (6.614%), and Rg6 (13.017%) were highest at 36 hours. On the other hand, the 2-hour heat-processed extract and 2-hour ultrasonic thermal fusion-processed extract did not contain ginsenoside Rg3, Rg5, and Rg6. The ultrasonic thermal fusion process had an extraction yield that was approximately 1.26 times greater than that of the heat process. These results indicate that the highly functional tienchi seng extracts created through the ultrasonic thermal fusion process are more industrially useful than those produced using the heat process.

• Journal of Ginseng Research
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• v.31 no.1
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• pp.23-33
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• 2007

Ginsenosides are one of the most well-known traditional herbal medicines frequently used for the treatment of cardiovascular symptoms in korea. The anti-ischemic effects of the mixture of ginsenoside $Rg_3$, and CK on ischemia-induced isolated rat heart were investigated through analyses of changes in hemodynamics ; blood pressure, aortic flow, coronary flow, and cardiac output. The subjects in this study were divided into four groups: normal control, the mixture of ginsenoside $Rg_3$ and CK, an ischemia-induced group without any treatment, and an ischemia-induced group treated with the mixture of ginsenoside $Rg_3$ and CK. There were no significant differences in perfusion pressure, aortic flow, coronary flow and cardiac output between them before ischemia was induced. The supply of oxygen and buffer was stopped for five minutes to induce ischemia in isolated rat hearts, and the mixture of ginsenoside $Rg_3$ and CK was administered during ischemia induction. Treatments of the mixture of ginsenoside $Rg_3$ and CK significantly prevented decreases in perfusion pressure, aortic flow, coronary flow, and cardiac output under ischemic conditions. In addition, hemodynamics (except heart rate) of the group treated with the mixture of ginsenoside $Rg_3$ and CK significantly recovered 60 minutes after reperfusion compared to the control group (mixture+ischemia vs ischemia - average perfusion pressure: 74.4${\pm}$2.97% vs. 85.1${\pm}$3.01%, average aortic flow volume: 49.11${\pm}$2.72% vs. 59.97${\pm}$2.93%, average coronary flow volume: 58.50${\pm}$2.81% vs. 72.72${\pm}$2.99%, and average cardiac output: 52.47${\pm}$2.78% vs. 63.11${\pm}$2.76%, p<0.01, respectively). These results suggest that treatment of the mixture of ginsenoside $Rg_3$ and CK has distinct anti-ischemic effects in ex vivo model of ischemia-induced rat heart.

• Applied Biological Chemistry
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• v.51 no.2
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• pp.114-118
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• 2008

Ginseng treated with several treatment conditions of various acids to search hydrolysates on the basis of increased biological activity and modified structure. In the result of acid treatment, the conversion rate of ginsenoside Rg3, Rk1 and Rg5 was highest when ginseng treated with citric acid. After added citric acid to ginseng extract, boiled at l00$^{\circ}C$ for 1 hour and add enzyme, which is examined change by time. It compared with group which did not treated acid. Two groups became difference according to enzyme but the generation rate of ginsenoside Rg3, Rk1 and Rg5 did not show difference greatly. Also, the generation rate of ginsenoside Rg3, Rk1 and Rg5 by time passes did not show difference. The generation rate of ginsenoside Rg3, Rk1 and Rg5 increased when increased acid concentration, temperature and time. We did exclusion molding to shorten treatment time. In the result of ginseng treated with citric acid of various concentrations at various temperatures as time passes by extrusion molding, the generation rate of ginsenoside Rg3, Rk1 and Rg5 was highest when ginseng treated with 3% citric acid at l60$^{\circ}C$ for 20 minutes. In addition, total saponin amount of ginseng treated with 3% citric acid at 160$^{\circ}C$ for 20 minutes was about 11% higher than ginseng heated at 120$^{\circ}C$ for 3 hours. These results indicated that our exclusion molding process more effective, compared to traditional red ginseng manufacturing process.

• Korean Journal of Food Science and Technology
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• v.37 no.3
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• pp.508-512
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• 2005

Ginsenoside composition and contents of Korean white and taegeuk ginsengs were investigated to establish Chinese pharmaceutical standards for import of Korean ginseng. Total ginsenoside-Rg1, Re, and Rb1 of all Korean white and taegeuk ginseng samples were higher than guideline of Chinese standard of 0.4%, $Mean{\pm}S.D.$ values of Rg1, Re, and Rb1 of Korean white ginseng were $232.7{\pm}110.2,\;235.3{\pm}101.5,\;and\;280.1{\pm}121.3\;mg%$, respectively. Ratio of Rg1 to Re of Korean white ginseng was 1.02. $Mean{\pm}S.D.$ values of Rg1, Re, and Rb1 of Korean taeguek ginseng were $262.1{\pm}127.2,\;213.1{\pm}55.7,\;and\;279.9{\pm}92.1\;mg%$, respectively.

• Journal of Korean Medicine Rehabilitation
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• v.23 no.2
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• pp.1-15
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• 2013

Objectives : In present study, we investigated the effects of ginsenoside Rg3 on early-stage inflammatory response in spinal cord compression of rodents. Methods : Spinal cord injury(SCI) was induced by a vascular clip method(30 g, 5 min) on the spinal cord of mice. Rg3 was treated orally at 1 hour prior to the SCI induction. Messenger ribonucleic acid(mRNA) expression of tumor necrosis factor-${\alpha}$(TNF-${\alpha}$), interleukin-1${\beta}$(IL-1${\beta}$), interleukin-6(IL-6) and cyclooxygenase-2(COX-2) was measured by the real-time polymerase chain reaction(RT-PCR). Microglia in the spinal cord tissue, neurophils and COX-2 in the peri-lesion and inducible nitric oxide synthase(iNOS) expression in the ventral horn of SCI induced rats were measured by immunohistochemical stain. Results : 1. Rg3 significantly reduced the mRNA expression of TNF-${\alpha}$, IL-1${\beta}$, and COX-2 in the spinal cord tissue compared with SCI group(p<0.05, p<0.01). 2. Rg3 significantly reduced the total number of activated microglia and proportion of phagocytic form in the total activated microglia compared with SCI group(p<0.05, p<0.01). 3. Rg3 significantly reduced myeloperoxidase(MPO) positive neurophil in the peri-lesion compared with SCI group(p<0.05). 4. Rg3 reduced the COX-2 expression in the tissue and motor neurons compared with SCI group. 5. Rg3 significantly reduced iNOS positive motor neurons in the ventral horn compared with SCI group(p<0.01). Conclusions : In conclusion, we demonstrated at first that treatment of ginsenoside Rg3 could reduce significantly the levels of inflammatory mediators in a spinal cord compression model of rodents. Therefore, these results suggested that ginsenoside Rg3 may be a useful antimiflamatory therapeutic candidate for SCI.

• Journal of Ginseng Research
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• v.40 no.3
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• pp.300-303
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• 2016

The result of USRG-12 indicated that ultrasonication-processed ($100^{\circ}C$, 12 h) red ginseng extracts had the highest amount of ginsenosides Rg3 (0.803%), Rg5 (0.167%), and Rk1 (0.175%).

• Journal of Photoscience
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• v.8 no.1
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• pp.19-22
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• 2001

It was reported that Red ginseng contains specific ginsenoside-Rg$_2$,-Rg$_3$,-Rh$_1$and -Rh$_2$, which show various pharmacological effects. However, production of these specific ginsenosides from Red ginseng is not commercially applicable because of high cost of the raw material, roots. This work was carried out to examine the production of Red ginseng specific ginsenosides from Agrobacterium-transformed hairy roots. Hairy roots were induced from 3 year-old root segment of Korean ginseng (Panax ginseng C.A. Meyer) after infection with Agrobacterium rhizogenes A4. Among many lines of hairybroots, KGHR-8A was selected. Steam heat treatment of hairy roots was resulted in the changes of ginsenoside composition. Eleven ginsenosides were detected in heat-treated hairy roots but eight in freeze dried hairy roots. In heat treated hairy root, content of ginsenoside-Rb$_1$,Rb$_2$,Rc, Rd, Re, Rf, and Rg$_1$were decreased compared to those of freeze dried hairy roots. However, heat treatment strongly enhanced the amount of Red ginseng specific ginsenogides (ginsenoside-Rg$_2$,-Rg$_3$,-Rh$_1$and -Rh$_2$). Amounts of ginsenoside-Rg$_3$,-Rh$_1$and -Rh$_2$ in heat-treated hairy roots were 2.58, 3.62 and 1.08 mg/g dry wt, respectively, but these were detected as trace amount in hairy roots without heat treatment. Optimum condition of heat treatment for the production of Red ginseng specific ginsenoside was 2 h at 105$^{\circ}C$. This result represents that Red ginseng specific ginsenoside can be producted from hairy roots by steam heat treatment.

• Journal of Ginseng Research
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• v.44 no.3
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• pp.490-495
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• 2020

Background: Ginsenoside Rk1, a saponin component isolated from heat-processed Panax ginseng Meyer, has been implicated in the regulation of antitumor and anti-inflammatory activities. Although our previous studies have demonstrated that ginsenoside Rg3 significantly attenuated the activation of NMDA receptors (NMDARs) in hippocampal neurons, the effects of ginsenosides Rg5 and Rk1, which are derived from heat-mediated dehydration of ginsenoside Rg3, on neuronal NMDARs have not yet been elucidated. Methods: We examined the regulation of NMDARs by ginsenosides Rg5 and Rk1 in cultured rat hippocampal neurons using fura-2-based calcium imaging and whole-cell patch-clamp recordings. Results: The results from our investigation showed that ginsenosides Rg3 and Rg5 inhibited NMDARs with similar potencies. However, ginsenoside Rk1 inhibited NMDARs most effectively among the five compounds (Rg3, Rg5, Rk1, Rg5/Rk1 mixture, and protopanaxadiol) tested in cultured hippocampal neurons. Its inhibition is independent of the NMDA- and glycine-binding sites, and its action seems to involve in an interaction with the polyamine-binding site of the NMDAR channel complex. Conclusion: Taken together, our results suggest that ginsenoside Rk1 might be a novel component contributable to the development of ginseng-based therapeutic treatments for neurodegenerative diseases.