• Journal of Ginseng Research
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• 제35권3호
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• pp.344-351
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• 2011

Ginsenoside $Rb_1$ is the main component in ginsenosides. It is a protopanaxadiol-type ginsenoside that has a dammarane-type triterpenoid as an aglycone. In this study, ginsenoside $Rb_1$ was transformed into gypenoside XVII, ginsenoside Rd, ginsenoside $F_2$ and compound K by glycosidase from Leuconostoc mesenteroides DC102. The optimum time for the conversion was about 72 h at a constant pH of 6.0 to 8.0 and the optimum temperature was about $30^{\circ}C$. Under optimal conditions, ginsenoside $Rb_1$ was decomposed and converted into compound K by 72 h post-reaction (99%). The enzymatic reaction was analyzed by highperformance liquid chromatography, suggesting the transformation pathway: ginsenoside $Rb_1$ ${\rightarrow}$ gypenoside XVII and ginsenoside Rd${\rightarrow}$ginsenoside $F_2{\rightarrow}$compound K.

• 동의생리병리학회지
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• 제23권2호
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• pp.381-388
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• 2009

The present study was conducted to investigate the anti-allergic activity of Galgeunhaegi-Tang(GHT). We investigated the anti-allergic effects of GHT in RBL-2H3 basophilic leukemia cells by compound48/80, a mast cell degranulator and compound 48/80 induced anaphylactic shock in mice. GHT significantly inhibited ${\beta}$-hexosaminidase and histamine release from compound 48/80 stimulated RBL-2H3 cells. In addition, GHT effectively inhibited anaphylactic shock in mice by 40% at a dose 100 mg/mouse versus PBS treated control after the l.p injection(8 mg/kg) of compound 48/80. The in vitro anti-inflammatory activities of GHT in LPS-stimulated RAW 264.7 cells were investigated. GHT inhibited NO production in LPS-stimulated RAW 264.7 cells and effectively dowregulated the expression of iNOS mRNA and iNOS protein expression in LPS-stimulated RAW 264.7 cells. These result provide evidences that GHT may be beneficial in the treatment of allergic inflammtory disease.

• Journal of the Korean Wood Science and Technology
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• 제25권1호
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• pp.1-7
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• 1997

Kraft oak lignin and ricestraw lignin from acetosolve pulping were dissolved in 50/50 mixture of tetralin/m-cresol solvent. The dissolved lignin was reacted in the pressurized autoclave which was operating at $350{\sim}500^{\circ}C$ of reaction temperature and 10~20 atms of reaction pressure respectively_Hydrogen pressure of 60~80kg/$cm^2$ was exercising into the pressurized autoclave reactor to create thermochemical hydrogenolysis reaction. It was identified by GLC, GC-MS and HPLC that the alkyl-aryl-${\beta}$-O-4 ether bond of lignin was cleaved and degraded into various smaller molecules of aromatic compound such as phenols and cresols under the reaction conditions around $300^{\circ}C$ and 10 atms of reaction temoerature and pressure. Hydrogenolysis reaction of lignin compound which was done above $500^{\circ}C$ of reaction temperature and 20 atms of reaction pressure showed that the amount of aromatic compound such as phenols and cresols degraded from reactant lignin was decreasing with newly present and increasing water out of product mixtures. It was supposed that new aliphatic compound of high molecular weight hydrocarbon is composed due to higher reaction temperature and pressure of hydrogenolysis reaction such as $500^{\circ}C$ and 20 atms, even though it was almost impossible, to identify what kind of degraded products it was by HPLC.

• 한국의류산업학회지
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• 제6권5호
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• pp.667-672
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• 2004

Poly(ethylene terephthalate) (PET) fabrics were treated with a silica particle and phosphate flame retardant to determine the optimum process condition of the digital textile printing(DTP) media. The treating conditions for the study were 6 conditions, from F1 to F6, in which F3, F4 and F5 were treated with mixture of both silica particle and phosphate compound in process of pad, dry and cure fixation. F6 was treated with phosphate compound only and silica particle coating successively. Xanthan gum was used to control the migration of liquid phosphate compound onto PET fabrics. The change in surface morphology of fabrics treated with silica particle and phosphate compound was observed by SEM and flame retardance was evaluated by limiting oxygen index(LOI). It was observed that F6 was the excellent flame retardance and low bleeding in printing, Collectively, the printing characteristics of silica to cyan, magenta, yellow and black ink and flame retardance of fabrics finished with phosphate compound were identified in this study.

• Journal of Microbiology and Biotechnology
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• 제11권1호
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• pp.138-142
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• 2001

During the course of searching for anti-allergic substances from unexplored plant sources, an inhibitor of leukotriene $D_4$-induced tracheal contraction was isolated from Euphoribia helioscopia. This isolated polyphenol compound, known as helioscopinin-A, showed a certain inhibitory activity on capillary permeability in passive cutaneous anaphylaxis responses of rats and also on antigen-induced bronchial constriction in an experimental asthma model of guinea pigs. The compound at a high concentration weakly inhibited histamine release from isolated mast cells of rats. It is suggested that this compound is an anti-allergic and anti-asthmatic which exerts its activity through antagonism on leukotrene $D_4$-induced responses. A partial inhibition of allergic mediator relase may also bee involved.

• 생약학회지
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• 제46권4호
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• pp.279-282
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• 2015

In order to quantify compound K(CK), anticancer component of Panax ginseng C. A. Meyer, high titer rabbit polyclonal antibodies (pAbs) were raised against a conjugate of CK and bovine serum albumin coupled by a periodate oxidation method. Coating antigen (CK-OVA) was also prepared by the same method with OVA. As a result of optimization of antiserum dilution (2,000 fold), coating antigen ($25{\mu}g/ml$) and other condition (incubation time, temperature and washing method), ELISA method for the determination of CK was established. The measuring range extended from 0.5 ng/ml to 25 ng/ml of CK. The antibodies exhibited minor or even no cross reactivities with protopanaxatriol (1.56%) and other tested ginsenosides, $GRb_1$ (0.11%), $GRg_1$ (0.07%) except protopanaxadiol (87.2%) from the structural similarity. And the antibody showed good correlation (r=0.987) between the assay values obtained by this ELISA method and HPLC. Therefore, the ELISA method could be very useful tools for the determination of CK in biological fluids because of their high sensitivity and specificity.

• 약학회지
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• 제40권1호
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• pp.10-18
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• 1996

Daunirubicin and doxorubicin analogues (5,7,8,9,) in which the natural amino sugar, daunosamine, is replaced by rhamnopyranosyl or 4'-amino rhamnopyranosyl residues have been p repared. The in vitro cytotoxicity of compound 5 or 7 was similar to that of doxorubicin for P388 murine leukemic cell line. But compound 8 or 9 was less cytotoxic than doxorubicin. When administered intravenously on day 1, compound 9 showed antitumor activity comparable to that of doxorubicin against ip-inoculated L1210 murine leukemia and found to be less toxic than doxorubicin. But the in vivo antitumor activity of compound 7 or 8 was inferior to that of doxorubicin.

• Environmental Engineering Research
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• 제16권3호
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• pp.149-157
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• 2011

Nanofiltration (NF) experiments were conducted to investigate fouling of Al-hydroxide precipitate and the influence of organic compound, inorganic compound, and their combination, i.e., multiple foulants. $CaCl_2$ and $MgSO_4$ were employed as surrogates of inorganic compounds while humic acid was used as surrogate of organic compound. The flux attained from NF experiments was fitted with the mathematical fouling model to evaluate the potential fouling mechanisms. Al-hydroxide fouling with a cake formation mechanism had little effect on the NF membrane fouling regardless of the Al concentration. The NF fouling by Al-hydroxide precipitate was deteriorated in presence of inorganic matter. The effect of Mg was more critical in increasing the fouling than Ca. This is because the Mg ions enhanced the resistances of the cake layer accumulated by the Al-hydroxide precipitate on the membrane surfaces. However, the fouling with Mg was dramatically mitigated by adding humic acid. It is interesting to observe that the removal of the conductivity was enhanced to 61.2% in presence of Mg and humic acid from 30.9% with Al-hydroxide alone. The influence of dissolved matter (i.e., colloids) was more negative than particulate matter on the NF fouling for Al-hydroxide precipitate in presence of inorganic and organic matter.

• 한국응용과학기술학회지
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• 제10권1호
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• pp.103-109
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• 1993

Acornic powder was extracted with methanol and ethylacetate to obtain a crude acornic compounds. And they were examined concerning their antioxidant activities for linoleic acid. The results were as follows: 1. Hydrogen donating activity for DPPH was higher in 100ppm acornic compound than 100ppm BHT and 100ppm ${\alpha}$-tocopherol. 2. When the 100ppm acornic compound was added to linoleic acid, which was heated at $50^{\circ}C$ for 48 hours, antioxidant activities by POV and TBA was higher than that of 100ppm ${\alpha}$-tocopherol, but the effect was almost the same as the 100ppm BHT. 3. Antioxiodant activity of acornic compound showed synergistic effect along with malic acid, citric acid, tartaric acid, alanine, arginine, histidine, lysine-HCl, galactose, maltose, glucose and sucrose. 4. Acornic compound inhibited peroxidation of linoleic acid induced by heavy metals.

• 통합자연과학논문집
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• 제6권3호
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• pp.163-169
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• 2013

The chemokine receptor CCR1 a GPCR super family protein contains seven transmembrane domains. It plays an important role in rheumatoid arthritis, organ transplant rejection, Alzheimer's disease and also causes inflammation. Because of its role in disease processes, antagonism of CCR1 became an attractive therapeutic target. In the current study, we have taken a novel series of recently reported CCR1 antagonist of 1-(4-Phenylpiperazin-1-yl_-2-(1H-Pyrazol-1-yl) ethanone derivatives and performed a HQSAR analysis. The model was developed with Atom (A) and bond (B) parameters and with different set of atom counts to improve the model. The results of HQSAR showed good predictive ability in terms of $r^2$ (0.904) and $q^2$ (0.590) with 0.710 as standard error of prediction and 0.344 as standard error of estimate. The contribution map depicted the atom contribution in inhibitory effect. Compound-14 which was reported to be a highly active compound showed positive atom contribution in three R groups ($R^3$. $R^{5a}$ and $R^{2b}$) in inhibitory effect, which could be the reason why this compound is highly active compound whereas, the lowest active compound-6 showed negative contribution to inhibitory effect.