• The Korea Journal of Herbology
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• v.23 no.1
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• pp.85-92
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• 2008

Objectives : This study was performed to efficiently make Black Panax Ginseng (BPG) and evaluate its antitumor activity. Methods : Panax ginseng was steamed at $95^{\circ}C$ for 3 h, dried and steamed again at $115^{\circ}C$ for 6 h. The main ginsenosides of BPG were $Rg_{3}$, $Rk_{1}$ and $Rg_{5}$. Results : Among the saponins in BPG, the amount of ginsenoside $Rg_{3}$ was determined by HPLC method. The 11.48 mg of ginsenoside $Rg_{3}$ was obtained from lg of dried BPG. The crude saponin fraction (CSF) of BPG was tested in vitro for its cytotoxic activities against various human cancer cell lines, such as ACHN, NCI-H23, HCT-15 and PC-3. The CSF of BPG exhibited stronger cytotoxic activity than that of red Panax ginsneng. CSF of BPG exhibited good cytotoxic activities against ACFIN, HCT-15, and PC-3 cell lines with $IC_{50}$ values of 60.3-90.8 ${\mu}g$/ml. However, CSF of BPG did not show any cytotoxic activity against NCI-H23 cell line. Conclusions : BPG produced by new manufacturing is more effective than BPG produced by existing processing in anticancer activity. And new BPG has a possibility of investigation because of high contents of Rg3, Rk1 and Rg5 that have various phisological activities.

• Korean Journal of Plant Resources
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• v.25 no.4
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• pp.473-481
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• 2012

This study was conducted to investigate the contents of ginsenosides and physiochemical properties of Panax ginseng after 9 times steaming and drying treatment by using the new auto steamer which is more fast and simple than previous report. In the process of steaming and drying, the content of six major ginsenosides such as Rg1, Re, Rb1, Rc, Rb2 and Rd were gradually decreased. On the other hand, the content of seven minor ginsenosides includes Rh1, 20(S)-Rg2, 20(R)-Rg2, 20(S)-Rg3, 20(R)-Rg3, Rk1 and Rg5 were gradually increased. We observed the protopanxadiol ginsenosides such as Rb1, Rb2, Rc and Rd were converted into 20(S)-Rg3, 20(R)-Rg3, Rk1 and Rg5; similarly protopanxatriol ginsenosides of Rg1 and Re were converted into Rh1, 20(S)-Rg2 and 20(R)-Rg2. Based on the result of fresh ginseng, the contents of reducing sugar, acidic polysaccharide and total phenolic compounds were gradually increased and reached to maximum at 7 times repetitive steaming process of the fresh ginseng. Whereas DPPH radical scavenging activities were gradually decreased to 68% at 7 times steaming. New auto 9 repetitive steaming and drying process has similar production with original methods, but content of benzo(a)pyrene were not almost detected comparatively taking less time. The present results suggested that this method is best for the development of value-added ginseng industry related products.

• Journal of Microbiology and Biotechnology
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• v.29 no.2
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• pp.222-229
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• 2019

Korean ginseng (Panax ginseng Meyer) was processed by drying, steaming, or puffing, and the effects of these processes on the ginsenoside profile were investigated. The main root of 4-year-old raw Korean ginseng was dried to produce white ginseng. Steaming, followed by drying, was employed to produce red or black ginseng. In addition, these three varieties of processed ginseng were puffed using a rotational puffing gun. Puffed ginseng showed significantly higher extraction yields of ginsenosides (49.87-58.60 g solid extract/100 g of sample) and crude saponin content (59.40-63.87 mg saponin/g of dried ginseng) than non-puffed ginseng, respectively. Moreover, puffing effectively transformed the major ginsenosides (Rb1, Rb2, Rc, Rd, Re, and Rg1) of ginseng into minor ones (F2, Rg3, Rk1, and Rg5), comparable to the steaming process effect on the levels of the transformed ginsenosides. However, steaming takes much longer (4 to 36 days) than puffing (less than 30 min) for ginsenoside transformation. Consequently, puffing may be an effective and economical technique for enhancing the extraction yield and levels of minor ginsenosides responsible for the major biological activities of ginseng.

• Journal of Ginseng Research
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• v.35 no.2
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• pp.235-242
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• 2011

To obtain microorganisms for the microbial conversion of ginsenosides in red ginseng extract (RGE), mushroom mycelia were used for the fermentation of RGE. After fermentation, total sugar contents and polyohenol contents of the RGEs fermented with various mushrooms were not a significant increase between RGE and the ferments. But uronic acid content was relatively higher in the fermented RGEs cultured with Lentus edodes (2155.6 ${\mu}g/mL$), Phelllinus linteus (1690.9 ${\mu}g/mL$) and Inonotus obliquus 26137 and 26147 (1549.5 and 1670.7 ${\mu}g/mL$) compared to the RGE (1307.1 ${\mu}g/mL$). The RGEs fermented by Ph. linteus, Cordyceps militaris, and Grifola frondosa showed particularly high levels of total ginsenosides (20018.1, 17501.6, and 16267.0 ${\mu}g/mL$, respectively). The ferments with C. militaris (6974.2 ${\mu}g/mL$), Ph. linteus (9109.2 ${\mu}g/mL$), and G. frondosa (7023.0 ${\mu}g/mL$) also showed high levels of metabolites (sum of compound K, $Rh_1$, $Rg_5$, $Rk_1$, $Rg_3$, and $Rg_2$) compared to RGE (3615.9 ${\mu}g/mL$). Among four different RGE concentrations examined, a 20 brix concentration of RGE was favorable for the fermentation of Ph. linteus. Maximum biotransformation of ginsneoside metabolites (9395.5 ${\mu}g/mL$) was obtained after 5 days fermentation with Ph. linteus. Maximum mycelial growth of 2.6 mg/mL was achieved at 9 days, in which growth was not significantly different during 5 to 9 days fermentation. During fermentation of RGE by Ph. linteus in a 7 L fermenter, $Rg_3$, $Rg_5$, and $Rk_1$ contents showed maximum concentrations after 5 days similar to flask fermentation. These results confirm that fermentation with Ph. linteus is very useful for preparing minor ginsenoside metabolites while being safe for foods.

• Korean Journal of Medicinal Crop Science
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• v.28 no.6
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• pp.445-454
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• 2020

Background: Culturing wild ginseng adventitious root using plant factory technology provides genetic safety and high productivity. This production technology is drawing attention in the fields of functional raw materials and product development. The cultivation method using elicitors is key technology for controlling biomass and increasing secondary metabolites. Methods and Results: Elicitor treatments using methyl jasmonate, pyruvic acid, squalene, β-sistosterol were performed to amplify total ginsenosides (Rb1, Rc, Rb2, Rb3, and Rd) of cultured wild ginseng adventitious root. Thereafter, fermentation and steaming processes were performed to convert total ginsenosides into minor molecular ginsenosides (Rg3, Rk1, and Rg5). The result indicated that methyl jasmonate minimizes the reduction in fresh weight of cultured wild ginseng adventitious root and maximizes total ginsenosides (sum of Rb1, Rc, Rb2, Rb3, and Rd). Ginsenoside conversion results showed a maximum degree of conversion of 131 mg/g. Conclusions: In this study, we demonstrated that the optimal elicitor treatment method increased the content of total ginsenosides, while the steaming and fermentation processing method increased the content of minor ginsenosides.

• Journal of Ginseng Research
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• v.44 no.4
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• pp.563-569
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• 2020

Background: White ginseng consists of the roots and rhizomes of the Panax species, and red ginseng is made by steaming and drying white ginseng. While red ginseng has both polar and nonpolar ginsenosides, previous studies showed white ginseng to have only polar ginsenosides. Because nonpolar ginsenosides are formed through the manufacture of red ginseng from white ginseng, researchers have generally thought that nonpolar ginsenosides do not exist in white ginseng. Methods: We developed a simultaneous quantitative method for six nonpolar ginsenosides in white ginseng using reverse-phase high-performance liquid chromatography coupled with integrated pulsed amperometric detection. The nonpolar ginsenosides of white ginseng were extracted for 4 h under reflux with 50% methanol. Results: Using the gradient elution system, all target components were completely separated within 50 min. Nonpolar ginsenosides were determined in the rhizome head (RH), main root (MR), lateral root, and hairy root (HR) of 6-year-old white ginseng samples obtained from several regions (Geumsan, Punggi, and Kanghwa). The total content in the HR of white ginseng was 37.8-56.8% of that in the HR of red ginseng. The total content in the MR of white ginseng was 5.9-24.3% of that in the MR of red ginseng. In addition, the total content in the RH of white ginseng was 28.5-35.8% of that in the HR of red ginseng Conclusion: It was confirmed that nonpolar ginsenosides known to be specific components of red ginseng were present at substantial concentrations in the HR or RH of white ginseng.

• Journal of Ginseng Research
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• v.36 no.1
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• pp.1-15
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• 2012

The major commercial ginsengs are Panax ginseng Meyer (Korean ginseng), P. quinquifolium L. (American ginseng), and P. notoginseng (Burk.) FH Chen (Notoginseng). P. ginseng is the most commonly used as an adaptogenic agent and has been shown to enhance physical performance, promote vitality, increase resistance to stress and aging, and have immunomodulatory activity. These ginsengs contain saponins, which can be classified as dammarane-type, ocotillol-type and oleanane-type oligoglycosides, and polysaccharides as main constituents. Dammarane ginsenosides are transformed into compounds such as the ginsenosides $Rg_3$, $Rg_5$, and $Rk_1$ by steaming and heating and are metabolized into metabolites such as compound K, ginsenoside $Rh_1$, proto- and panaxatriol by intestinal microflora. These metabolites are nonpolar, pharmacologically active and easily absorbed from the gastrointestinal tract. However, the activities metabolizing these constituents into bioactive compounds differ significantly among individuals because all individuals possess characteristic indigenous strains of intestinal bacteria. To overcome this difference, ginsengs fermented with enzymes or microbes have been developed.

• Proceedings of the PSK Conference
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• 2003.10b
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• pp.218.1-218.1
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• 2003

Saponins are known to be the major constituent of Panax ginseng. More than 30 kinds of ginseng saponins are reported so far. The major saponins in white ginseng (WG) or red ginseng (RG) are ginsenosides Rb1, Rb2, Rc, Rd, Rg1, and Re. HPLC method with ELSD or UV detection was used to analyze ginsenosides. Recently, a new processed ginseng with fortified activity, named as Sun Ginseng (SG), was reported. The major ginsenosides of SG are totally different from that of WG or RG, i.e., ginsenoside Rg3, Rk1, and Rg5 are the major constituents of SG. (omitted)

• The Journal of Korean Medicine
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• v.33 no.3
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• pp.200-230
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• 2012

Objectives: Ginseng, Panax ginseng C. A., white ginseng, has been used for thousands of years in Traditional Korean Medicine. Red ginseng can be made by a steaming process of white ginseng changing a variety of ginsenosides and ingredients such as dencichine. This article reviews red ginseng for mechanisms for pharmacodynamics and toxicity based on the content of ginseng's active ingredients, ginsenoside changed by steaming. Methods: The following electronic databases were searched: PubMed, Science Direct and Chinese Scientific Journals full text database (CQVIP), and KSI (Korean Studies Information) from their respective inceptions to June 2012. Results: Compared with unsteamed ginseng, the content of ginsenosides Rg2, Rg3, Rg5, Rh1, Rh2 and Rk1 called red ginseng-specific ginsenosides increased after the steaming process. Different ginsenosides have shown a wide variety of effects such as lowering or raising blood sugar and blood pressure or stimulating or sedating the nervous system. Especially, the levels of Rg2, Rg3, Rg5, Rh1, Rh2 and Rk1 were increased by the steaming process, showing a variety of pharmacodynamics in biological systems. Also, various processing methods such as puffing and fermentation have been developed in processing crude ginseng or red ginseng, affecting the content of ginseng's ingredients. The safety issue could be the most critical, specifically, on changed ginseng's ingredients such as dencichine. The level of dencichine was significantly reduced in red ginseng by the steaming process. In addition, the possible toxicity for red ginseng was affected by cytochrome P450, a herbal-drug interaction. Conclusions: The variety of pharmacological and toxicological properties should be changed by steaming process of Panax ginseng C. A., white ginseng. Even if it is not sure whether the steaming process of white ginseng would be better pharmacologically, it is sure that steaming reduces the level of dencichine causing a lower toxicity to the nervous system.

• Journal of Ginseng Research
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• v.37 no.4
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• pp.379-388
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• 2013

Diabetic nephropathy is one of the serious complications in patients with either type 1 or 2 diabetes mellitus but current treatments remain unsatisfactory. Results of clinical research studies demonstrate that Panax ginseng can help adjust blood pressure and reduce blood sugar and may be advantageous in the treatment of tuberculosis and kidney damage in people with diabetes. The heat-processing method to strengthen the efficacy of P. ginseng has been well-defined based on a long history of ethnopharmacological evidence. The protective effects of P. ginseng on pathological conditions and renal damage associated with diabetic nephropathy in the animal models were markedly improved by heat-processing. The concentrations of less-polar ginsenosides (20(S)-Rg3, 20(R)-Rg3, Rg5, and Rk1) and maltol in P. ginseng were significantly increased in a heat-processing temperature-dependent manner. Based on researches in animal models of diabetes, ginsenoside 20(S)-Rg3 and maltol were evaluated to have therapeutic potential against diabetic renal damage. These effects were achieved through the inhibition of inflammatory pathway activated by oxidative stress and advanced glycation endproducts. These findings indicate that ginsenoside 20(S)-Rg3 and maltol are important bioactive constituents of heat-processed ginseng in the control of pathological conditions associated with diabetic nephropathy.