• Proceedings of the Ginseng society Conference
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• 1993.09a
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• pp.110-112
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• 1993

Acidic polysaccharide from Korean red ginseng was found to inhibit pancreatic lipase activity and cause reduction of plasma triglyceride level after oral administration of corn oil emulsion to rats. Thus acidic polysaccharide may reduce plasma triglyceride through its inhibitory action on pancreatic lipase and successive inhibition of intestinal absorption of fat due to reduction of lipolysis. In the course of this experiment, we found an unknown ninhydrin positive substance in Korean red ginseng. The unknown substance was identified to be arginyl-fructosyl glucose(Arg - Fru - Glc). Coment of this new compound was $5.37\%$ in Korean red ginseng powder. Sucrase and maltase activities in mucous layer of rat jejunum were found to be inhibited by Arg-Fru-Glc. Physiological significance of the new compound was discussed based on these experimental results.

• Journal of Microbiology and Biotechnology
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• v.14 no.1
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• pp.220-223
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• 2004

Club root caused by Plasmodiophora brassicae is found in crucifers. Among the over hundreds of Streptomyces isolated from soil in Korea. One strain showed prominent activity against P. brassicae. The strain was identified based on 16S rDNA sequencing and the morphology by a method of scanning electron microscopy. An active compound in the fermented broth obtained from the strain was separated. Even though the complete assignments of the compound remain for future work, the results regarding the isolation and characterization of the strain with a certain activity against P. brassicae are shown in this paper.

• Korean Journal of Acupuncture
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• v.25 no.1
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• pp.197-211
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• 2008

Objectives : We studied on anti-allergic effects of Arctii Fructus Herbal Acupuncture(AFHA) and Arctii Fructus Herbal Acupuncture Solution(AF). Methods : In vivo, Animals were herbal-acupunctured AFHA at both ST36 three times for 5 days. Then, we investigated compound 48/80-induced active systemic anaphylaxis(ASA) using ICR mice and anti-DNP IgE-induced passive cutaneous anaphylaxis(PCA) using Sprague Dawley rat. In vitro, we measured cell viability, b-hexosaminidase, IL-4 and TNF-a release from RBL-2H3 cells after treatment of AF of various concentrations. Results : In vivo, AFHA pretreatments at both ST36 inhibited compound 48/80-induced ASA. PCA was inhibited by AFHA pretreatments at both ST36. In vitro, AF treatments were not affect on cell viability and inhibited b-hexosaminidase, IL-4 and TNF-a release. Conclusions : These results suggest that AFHA and AF may be beneficial in the inhibition of allergic inflammatory response.

• Korean Journal of Acupuncture
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• v.25 no.1
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• pp.213-227
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• 2008

Objectives : We studied on anti-allergic effects of Semen Perillae Herbal Acupuncture(SPHA) and Semen Perillae Herbal Acupuncture Solution(SP). Methods : In vivo, Animals were herbal-acupunctured SPHA at both ST36 three times for 5 days. Then, we investigated compound 48/80-induced active systemic anaphylaxis (ASA) using ICR mice and anti-DNP IgE-induced passive cutaneous anaphylaxis (PCA) using Sprague Dawley rat. In vitro, we measured cell viability, b-hexosaminidase release, IL-4 and TNF-a from RBL-2H3 cells after treatment of SP of various concentrations. Results : In vivo, SPHA pretreatments at both ST36 inhibited compound 48/80-induced ASA. PCA was inhibited by SPHA pretreatments at both ST36 and optional points. In vitro, SP treatments were not affect on cell viability and inhibited b-hexosaminidase release, IL-4 and TNF-a. Conclusions : These results suggest that SPHA and SP may be beneficial in the inhibition of allergic inflammatory response.

• Journal of Microbiology and Biotechnology
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• v.5 no.1
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• pp.31-35
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• 1995

An antitumor antibiotic named YS-1649 was isolated from the culture filtrate of a newly isolated fungus identified as Penicillium sp.. The fermentation yield reached about 40 mg per liter of the broth. YS-1649, a $\gamma$-Iactone - structured antibiotic, has the molecular fomular of $C_7H_6O_4$, Its structure was determined to be patulin by spectral analysis. It is active against some bacteria and showed cytotoxic effect on the proliferation of human breast cancer cell line, MCF-7, at concentrations of more than 0.048 $mu g/ml$. This compound also showed strong cytotoxic effect on the proliferation of human cancer cell lines, A549 and ACHN.

• Archives of Pharmacal Research
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• v.25 no.5
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• pp.652-654
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• 2002

Brine shrimp assay-guided fractionation and isolation of the EtOAc soluble fraction of Phryma leptostachya L. (Phrymacaceae) gave two active compounds, phrymarolin II (1) and ursolic acid (2), which were identified by physicochemical and spectroscopic methods. Compound 1 exhibited potent lethality with $LD_{50}$ value of 0.0013 $\mu\textrm{g}$/ml, whereas 2 showed moderate lethality with $LD_{50}$ value of 27.0 $\mu\textrm{g}$/ml against brine shrimp. The cytotoxic activities of 1 and 2 were also evaluated against one murine and five human cancer cell lines employing the sulforhodamin B (SRB) method. Compound 2 exhibited cytotoxic activity against L1210 and SK-MEL-2 cells with $ED_{50}$ values of 3.70 and 9.27 mg/ml, respectively, whereas 1 was devoid of any cytotoxic activity against all cancer cells tested.

• Journal of the Korean Society of Tobacco Science
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• v.25 no.1
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• pp.80-86
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• 2003

The contents of valepotriates, valerenic acid and their derivatives as mild sedative and antispamodic principles in two Korean valerian roots (Valeriana officinalis var. latifolia Miq. and V. fauriei var. dasycarpa Hara) were investigated and were compared with those in European valerian roots(Valeriana officinalis L.) by BPLC method. Among valepotriate compounds, valtrate was detected as a small amount in two Korean valerian roots, and iso-valtrate and dihydrovaltrate were detected as a trace amount. Among valerenic acid and their derivatives, valerenic acid were contained from 0.9∼3.46 mg/g base on dry weight. Over the vegetation periods investigated, the content of valepotriates remained more or less constant, hut the content of valerenic acid reached its maximum in 3-year old age. The compound isolated from Korean V. officinalis var. latifolia was elucidated as valerenic acid by spectroscopic data such as GC-MS, $^1$H-NMR and $^{13}$ C-NMR, and comparison of GC retention time with that of authentic compound.

• Journal of Applied Biological Chemistry
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• v.43 no.4
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• pp.273-276
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• 2000

In the course of surveying the anti-plaque agents for dental caries prevention, the extract of Korean green tea leaves (KGTL) was tested for inhibitory activity against Streptococcus mutans adhering to glass surfaces in the presence of crude glucosyltransferase (GTase). The extracts of KGTL showed a positive inhibitory activity against GTase. The active compound was purified through Sephadex LH-20 and MCI gel CHP-20P columns. A positive reaction was shown in the anisaldehyde-$H_2SO_4$ test, which confirmed the condensed tannin. The inhibitory compound was identified as 3-galloylprocyanidin $B_3$ through IR, negative FAB-mass, and $^{1}H$-NMR spectroscopic analyses. Acetone extract and 3- galloylprocyanidin $B_3$ of KGTL showed inhibitory effect against GTase. The percent of inhibition was determinated to be 71.84% (P<0.01) with 10 mM 3-galloylprocyanidin B3. The 3-galloylprocyanidin $B_3$, which possessed a galloyl, showed a higher inhibitory activity against glucosyltransferase than monomeric (+)-catechin and procyanidine $B_3$ which had no galloyl group.

• Fisheries and Aquatic Sciences
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• v.13 no.1
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• pp.12-17
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• 2010

This study was conducted to evaluate the potential of a microbial fermentation procedure to improve the functional qualities of seaweeds. Aspergillus oryzae, which has been used in traditional Korean fermented foods, was inoculated and cultivated in an aqueous extract of sea tangle (Laminaria japonica). Fermentation of the sea tangle extract by A. oryzae for 4 days resulted in a 3-fold increase in $\gamma$-aminobutyric acid (GABA) content. GABA is known to be a bioactive compound. Fungal fermentation of the extract also enhanced its antioxidant activity and increased its total content of phenolic compounds. It was assumed that these changes stemmed from the biodegradation of active compounds of the sea tangle packaged within its rigid structural matrix or occurred as result of fungal fermentation. These results suggested that the application of microbial fermentation to the processing of seaweeds will help in the development of processed foods to meet consumer demands.

• YAKHAK HOEJI
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• v.40 no.5
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• pp.539-544
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• 1996

4-Aryl-2-hydroxytetronic acids which can be construded as a "lipophilic vitamin C analogue", are known to have antilipidemic and antiaggregatory activities in stead of antiscorb utic activity of vitamin C. A new compound 4-(p-chlorobiphenyl)-2-hydroxytetronic acid (8), which is structurally closely connected with the most active 4-(p-chlorophenyl)-2-hydroxytetronic acid, was synthesized from alpha-(p-chlorobiphenyl)-alpha-hydroxyacetic acid (1) through 7 steps as a potentially bioactive compound.