• Biomolecules & Therapeutics
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• v.32 no.3
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• pp.301-308
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• 2024

Alzheimer's disease (AD) is a progressive and irreversible neurodegenerative disorder characterized by extracellular amyloid plaques composed of amyloid β-peptide (Aβ). Studies have indicated that Ca²⁺ dysregulation is involved in AD pathology. It is reported that decreased capacitative Ca²⁺ entry (CCE), a refilling mechanism of intracellular Ca²⁺, resulting in increased Aβ production. In contrast, constitutive activation of CCE could decrease Aβ production. Panax ginseng Meyer is known to enhance memory and cognitive functions in healthy human subjects. We have previously reported that some ginsenosides decrease Aβ levels in cultured primary neurons and AD mouse model brains. However, mechanisms involved in the Aβ-lowering effect of ginsenosides remain unclear. In this study, we investigated the relationship between CCE and Aβ production by examining the effects of various ginsenosides on CCE levels. Aβ-lowering ginsenosides such as Rk1, Rg5, and Rg3 potentiated CCE. In contrast, ginsenosides without Aβ-lowering effects (Re and Rb2) failed to potentiate CCE. The potentiating effect of ginsenosides on CCE was inhibited by the presence of 2-aminoethoxydiphenyl borate (2APB), an inhibitor of CCE. 2APB alone increased Aβ42 production. Furthermore, the presence of 2APB prevented the effects of ginsenosides on Aβ42 production. Our results indicate that ginsenosides decrease Aβ production via potentiating CCE levels, confirming a close relationship between CCE levels and Aβ production. Since CCE levels are closely related to Aβ production, modulating CCE could be a novel target for AD therapeutics.

• Journal of Ginseng Research
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• v.20 no.3
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• pp.318-324
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• 1996

The effects of light on the growth and ginsenosides production were examined in the hairy roots of Panax ginsen C.A. Meyer induced by Agrobacterium rhizogines A4. The 9rowth of ginseng hairy roots in 1/2MS liquid medium was significantly decreased with an increment of light intensity (1,000~7,000 lux). The growth of hairy roots under 7,000 lux condition was decreased at 17% compared to the dark condition. The production of 7 ginsenosides in hairy root was very high in 3,500 lux condition. The production of ginsenoside-Rg, and Rf increased 3.3 and, 2.4 times respectively as compared to dark condition. The growth of hairy roots was inhibited by blue light, while ginsenosides production was increased. The sucrose demands of hairy roots was examined in light condition(3,500 lux). The growth of hairy roots in 1/2MS liquid medium with various sucrose concentrations(1~4%) was high in IVp sucrose, while ginsenosides production was high in 3% sucrose condition. The growth and ginsenosides production were high when hairy roots were cultured in dark condition for 1 week and then transferred to light condition(3,500 lux) for 4 weeks. It is suggested that ginsenosides production could be accelerated by light intensity of specific wavelength in cultures of ginseng hairy roots.

• Journal of Applied Biological Chemistry
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• v.65 no.3
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• pp.129-142
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• 2022

Ginseng sprouts, which can be eaten from leaves to roots, has the advantage of not having to use pesticides without being affected by the season by using smart farms. The optimal cultivation timing of sprout ginseng was checked and the nutritional content and antioxidant activity were compared and analyzed. The values of total fatty acids and total minerals were no significant changes during the growth periods. The contents of total amino acids were slightly decreased to 45 days and after increased to 65 days. When the growth period was 65 days, arginine had the highest content of 3309.11 mg/100 g. The total phenolic contents were high at 3.73 GAE mg/g on the 45 days, and the total flavonoid contents were also the highest at 9.04 RE mg/g on the 45 days. The contents of total ginsenoside was not noticeable for the growth periods (29.83 on 25 days→32.77 on 45 days→26.02 mg/g on 65 days). The ginsenoside Rg2 (0.62 mg/g), Re (8.69 mg/g), Rb1 (4.75 mg/g) and Rd (3.47 mg/g) had highest contents on 45 days during growth. The values of phenolic acids and flavonols were gradually increased to 45 days (338.6 and 1277.14 ㎍/g) and then decreased to 65 days. The major compounds of phenolic acids and flavonols were confirmed to benzoic acid (99.03-142.33 ㎍/g) and epigallocatechin (416.03-554.64 ㎍/g), respectively. The values of 2,2-diphenyl-1-picrylhydrazyl (44.27%), 2,4,6-azino-bis (3-ethylbenzothiazoline-6-sulphnoic acid) diammonium salt (75.16%), and hydroxyl (63.29%) radical scavenging activities and ferric reducing/antioxidant power (1.573) showed the highest activity on the 45 days as well as results of total phenolic and total flavonoid contents.

• Journal of Ginseng Research
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• v.4 no.1
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• pp.16-30
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• 1980

In order to increase the production of ginseng, a cultural experiment was carried out under different types of natural forest condition. Seedlings were transplanted with three spacing (70,90 and plants per 1.62m2) under the broad leaved, needle and mixed forest. The obtained results are as follows. 1 Growth of aerial part of ginseng plant. 1) Vegetative growth under forest condition of very poor as compared with ordinary cultivation, but there was no significant in number of leaf and teasel. 2) Stem diameter and stem length under the different forest types were a little difference. However petiole length and number of leafet showed an increasing trend in broad leaved forest as compared with other forest types. 3) The withering date of aerial part of ginseng plant in the needle forest was later than of others. 2. Fresh weight of ginseng root per plant was decreasing in the order of broad leaved forest, needle and mixed forest, needle and sized forest respectively. However the root weight was much smaller than that of ordinary cultivated one. 3. No big difference was observed in the growth of both aerial and root among the planting density 4. Nitrogen content in ginseng root under forest was lower, but calcium content In root was higher than that of ordinary one. 5. Fat and fiber content of ginseng root under forest showed higher than that of ordinary one. 6. The saponin content of ginseng root grown under forest condition was higher than that of ordinary ginseng root. According to high performance liquid chromatogram of saponin, only difference from ordinary cultivated ginseng root was that ginsenoside Re showed higher peak than ginsenoside Rg1.

• Bulletin of Food Technology
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• v.25 no.3
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• pp.258-266
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• 2012

경기인삼 품질 특성을 확립하기 위한 기초자료로 진세노사이드 특성을 조사하였다. 경기도내 4대 인삼조합(개성, 김포 파주, 경기동부, 안성) 인삼을 인삼농가에서 직접 채취하거나 채굴현장에서 수집하여 진세노사이드 함량 및 조성을 분석하여 그 특성을 분석해 본 결과는 다음과 같다. 1. 경기인삼 4, 5, 6년근의 총 진세노사이드 함량은 3.92 mg/g, 4.34 mg/g 및 4.94 mg/g으로 각각 나타나 재배 년수가 증가할수록 함량이 높아짐을 알 수 있었다. PD/PT 비율은 1.12, 1.34 및 1.40으로 년근 수가 증가할수록 PD계열 진세노사이드 함량이 증가하였다. 2. 경기인삼 6년근의 크기별 진세노사이드 함량을 측정한 결과 큰 인삼(大)의 총 진세노사이드 함량은 5.19 mg/g, 작은 인삼은 4.69 mg/g으로 같은 년근 수에서는 인삼의 크기에 따라 진세노사이드함량 차이는 크게 나타나지 않았다. 3. 6년근 부위별 총 진세노사이드 함량은 주근이 3.70 mg/g이며 세근은 6.37 mg/g으로써 주근보다 세근에서 1.72배 함량이 높은 것으로 나타났다. 진세노사이드 각각 함량별로 비교해 볼 때 PD계인 진세노사이드 $Rb_2$, $Rb_3$, Rc, Rd와 PT계인 Re, $Rg_2$가 주근보다 세근에서 높은 함량을 나타내어, PD/PT 비율이 1.08과 2.06으로 세근은 주근보다 PD계열 함량이 2배 이상 높은 것으로 나타났다.

• Korean Journal of Food Science and Technology
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• v.10 no.2
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• pp.181-188
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• 1978

To study on the changes in saponins from callus mass by tissue culture, the callus was derived from the petiole of Korean Ginseng (Panax Ginseng C.A. Meyer) and cultivated on Murashige and Skoog's agar medium supplemented with 2.4-dichlorophenoxyacetic acid and kinetin for 8 months. Then, well-grown callus was analyzed for its components estimation. The results obtained are as follows: (1) When saponins isolated from callus mass were chromatographed on a silca gel plate, and determined by the thinchrograph TFG-10, the ratio of Rb, c to Rg(f) in saponins was 2.16 to 1 and Rb, c, d to Re, g (f) was 1 to 1.63, while in the case of saponins from the root of Panax Ginseng grown by soil culture, the ratio of Rb, c to Rg(f) was 1.03 to 1 and the ratio of Rb, c,d to Re, g(f) was 1 to 1.17. (2) Sapogenins were obtained from the hydrolysates of saponins, and determined by thinchrograph TFG-10. The ratio of panaxadiol to panaxatriol in sapogenins from callus saponins was 2.66 to 1, while the ratio of panaxadiol to panaxatriol in sapogenins from ginseng root saponins was 1.86 to 1. From the results above mentioned, we concluded that the relative contents of sapogenins in saponins from callus mass by tissue culture were different from those in saponins from ginseng root by soil culture.

• Journal of Ginseng Research
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• v.41 no.4
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• pp.540-547
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• 2017

Background: In general, after Panax ginseng is administered orally, intestinal microbes play a crucial role in its degradation and metabolization process. Studies on the metabolism of P. ginseng by microflora are important for obtaining a better understanding of their biological effects. Methods: In vitro biotransformation of P. ginseng extract by rat intestinal microflora was investigated at $37^{\circ}C$ for 24 h, and the simultaneous determination of the metabolites and metabolic profile of P. ginseng saponins by rat intestinal microflora was achieved using LC-MS/MS. Results: A total of seven ginsenosides were detected in the P. ginseng extract, including ginsenosides Rg1, Re, Rf, Rb1, Rc, Rb2, and Rd. In the transformed P. ginseng samples, considerable amounts of deglycosylated metabolite compound K and Rh1 were detected. In addition, minimal amounts of deglycosylated metabolites (ginsenosides Rg2, F1, F2, Rg3, and protopanaxatriol-type ginsenosides) and untransformed ginsenosides Re, Rg1, and Rd were detected at 24 h. The results indicated that the primary metabolites are compound K and Rh1, and the protopanaxadiol-type ginsenosides were more easily metabolized than protopanaxatriol-type ginsenosides. Conclusion: This is the first report of the identification and quantification of the metabolism and metabolic profile of P. ginseng extract in rat intestinal microflora using LC-MS/MS. The current study provided new insights for studying the metabolism and active metabolites of P. ginseng.

• Journal of Ginseng Research
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• v.27 no.4
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• pp.183-187
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• 2003

This study was carried out to ascertain the basic information on characteristics of Korean Ginseng(Panax ginseng) and American ginseng(Panax quinquefolius), F$_1$ hybrids. Interspecies hybrids between Panax ginseng and Panax quinquefolius were examined morphological characteristics, rusty root incidence, and contents of effective ingredients such as ginsenosides. The summarized results are as follows. In Panax ginseng, rusty root incidence tended to increase with age of ginseng, but there was no difference in the incidence among ginseng ages and cultivation years in Panax quinquefolius and F$_1$ hybrid. The interspecies hybrid of panax ginseng and Panax quinquefolius flowered later than the Panax ginseng, but earlier than the Panax quinquefolius. As for the characteristics of ginseng root, Panax quinquefolius seedling was better than cv. Panax ginseng, as the former had longer and heavier seedling root than the latter. Ginsenosides of the hybrid F$_1$ showed intermediate value in amounts of Rb$_1$, Rb$_2$, Rc and Rd which were detected as in Panax gineng and Panax quinquefolius. The amount of Re of the hybrid was higher, but that of Rg$_1$ and Rg$_2$ in main and branch roots was lower compared with its parents. Rf was 0.14% and 0.20% in main and branch roots of Panax ginseng, respectively; however, no Rf was detected in Panax quinquefolius and in the hybrid F$_1$. This suggests there may be remarkable difference in Rf content among the ginseng species.

• Food Science and Preservation
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• v.25 no.1
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• pp.62-70
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• 2018

This study investigates, the physicochemical characteristics of Sengmaksan (SM) prepared with Liriope platyphylla (LP) that had been roasted for different times (0, 30, 60, and 90 min, denoted as S-0, S-30, S-60, and S-90, respectively) The Hunter's color values such as lightness (L), redness (a), and yellowness (b) were the highest in S-0, while the lowest was found in S-90. The amount of soluble solid and reducing sugar content of S-60 were higher than the others. None of the samples exhibit significant differences in, their pH and acidity. The total content of phenolic compounds increased with the LP roasting time, but the total flavonoid and total anthocyanin contents of the SM decreased at the same time. The total ginsenoside (Ro, Rb2, Re, Rf, Rg1, Rg2, Rg3, Rh1, and Rh2) content did not show significant differences. The DPPH and ABTS radical scavenging activities increased according to the concentration, as well as with the LP roasting time. The ferric reducing antioxidant power (FRAP) showed trends similar to the radical scavenging activity, but it was more sensitive to the LP roasting time. From these results, the active ingredient in S-60 was higher, and the antioxidant activities of SM increased along with the roasting time of LP.

• Proceedings of the Plant Resources Society of Korea Conference
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• 2018.10a
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• pp.118-118
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• 2018

인삼은 우리나라에서 오랜 역사동안 많은 연구가 진행되어 왔으며, 현재는 다양한 방법으로 홍삼과 흑삼으로 만들어 식품, 화장품, 의약품 등 다양한 방면으로 사용하고 있다. 본 연구에서 시중에서 구매한 새싹삼(인삼새싹) 잎/줄기에 함유된 진세노사이드(Re, Rg1, Rb1, Rg3, Rh1) 함량을 높이기 위하여 증숙과 초음파 추출조건에 관한 연구를 수행하여 우수한 항노화 소재를 개발하기 위하여 실시하였다. 실험은 새싹삼 잎/줄기를 증숙 온도와 시간의 조건에서 진세노사이드 함량이 가장 높은 조건을 선정하였으며, 선정된 조건의 새싹삼 잎/줄기에 파장과 출력에 대한 조건으로 초음파 추출을 진행하여 진세노사이드가 가장 높은 함량을 보이는 조건을 선정하였다. 그 결과 새싹삼 잎/줄기추출물(GSE; Ginseng Sprout Extract)의 진세노사이드 함량은 4.8 mg/g으로 확인되었으나 증숙공정을 통해 8.82 mg/g으로 함량이 증가되었으며, 상기 증숙된 새싹삼 잎/줄기에 초음파공정을 적용하여 추출한 새싹삼 잎/줄기초음파추출물(SU-GSE; Steaming & dry Ultrasonication-Ginseng Sprout Extract)에서는 최대 10.65 mg/g으로 함량이 증가되었다. 반면, 새싹삼 뿌리의 진세노사이드는 2.30 mg/g으로 확인되었으나 증숙공정을 통해 4.95 mg/g으로 함량이 증가되었으며, 초음파추출공정을 통해 최대 5.82 mg/g으로 함량이 증가된 것을 확인할 수 있었으나, 새싹삼 잎/줄기에 비해 진세노사이드 함량이 낮은 것을 확인하였다. 항노화 소재로의 활용가능성을 평가하기 위하여 새싹삼 잎/줄기추출물 GSE와 SU-GSE에 대한 세포생존률, 항산화 및 항노화에 대한 효능평가를 진행하였으며 GSE의 경우 $100{\mu}g/ml$에서 세포생존률이 82.4%를 보인 반면 SU-GSE에서는 $1,000{\mu}g/ml$의 농도에서 101.8%의 세포 생존률을 보였다. 항산화 활성의 경우 GSE와 SU-GSE $100{\mu}g/ml$ 농도에서 각각 52%와 81%의 항산화 활성을 나타냄으로써 SU-GES의 조건에서 항산화 활성이 우수한 것으로 확인되었다. 또한, 항노화 활성에 대한 실험결과 MMP-1 유전자 발현에 대한 억제율을 비교한 결과 GSE와 SU-GES $100{\mu}g/ml$의 농도에서 각각 18%와 29%의 억제율을 보임에 항노화 소재로의 활용가능성을 확인하였다.