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Screening of aldose reductase inhibitory activity of white-color natural products
목소연,신현철,이상현 충남대학교 농업과학연구소 2012 농업과학연구 Vol.39 No.1
The purpose of this study was to evaluate the potential of naturally occurring aldose reductase (AR) inhibitors from white-color natural products (Aruncus dioicus var. kamtschaticus, Chionanthus retusa, Cosmos bipinnatus, Hibiscus syriacus, Hydrangea paniculata, Magnolia denudata, Prunus padus, Robinia pseudo-accacia, Rhododendron mucronulatum for. albiflorum, Spiraea blumei, and Spiraea prunifolia var. simpliciflora). The MeOH extract of white-color natural products were tested on rat lens AR inhibition in vitro. Among them, the MeOH extract of R. mucronulatum for. albiflorum showed highest inhibition on AR (IC50 value, 1.07 μg/ml). These results suggested that R. mucronulatum for. albiflorum,a white-color natural product, could be a useful resource in the development of a novel AR inhibitory agent against diabetic complications.
Inhibition of Aldose Reductase on Rat Lens by Tartary Buckwheat
목소연,Jeong Min Lee,김혜민,이동구,Young-Ho Yoon,조은주,이상현 한국생약학회 2011 Natural Product Sciences Vol.17 No.3
To evaluate the potential of naturally occurring aldose reductase (AR) inhibitors from food material, MeOH extract and stepwise polarity fractions from tartary buckwheat and two common Korean buckwheat cultivars, yangjul-maemil and daesan-maemil, were tested on AR inhibition in rat lens in vitro. The EtOAc fraction from tartary buckwheat exhibited good AR inhibitory activity (IC50 value, 8.19 mg/ml). A portion of the EtOAc fraction from tartary buckwheat led to the isolation of rutin by MeOH recrystalization. Rutin exhibited good AR inhibitory activity (IC50 value, 9.28 mM). These results suggest that tartary buckwheat could be a useful food material in the development of a novel AR inhibitory agent against diabetic complications.
Screening of aldose reductase inhibitory activity of white-color natural products
목소연,신현철,이상현,Mok, So-Youn,Shin, Hyun-Cheol,Lee, Sang-Hyun Institute of Agricultural Science 2012 Korean Journal of Agricultural Science Vol.39 No.1
The purpose of this study was to evaluate the potential of naturally occurring aldose reductase (AR) inhibitors from white-color natural products (Aruncus dioicus var. kamtschaticus, Chionanthus retusa, Cosmos bipinnatus, Hibiscus syriacus, Hydrangea paniculata, Magnolia denudata, Prunus padus, Robinia pseudo-accacia, Rhododendron mucronulatum for. albiflorum, Spiraea blumei, and Spiraea prunifolia var. simpliciflora). The MeOH extract of white-color natural products were tested on rat lens AR inhibition in vitro. Among them, the MeOH extract of R. mucronulatum for. albiflorum showed highest inhibition on AR ($IC_{50}$ value, 1.07 ${\mu}g/ml$). These results suggested that R. mucronulatum for. albiflorum, a white-color natural product, could be a useful resource in the development of a novel AR inhibitory agent against diabetic complications.
Screening of aldose reductase inhibitory activity of white-color natural products
So-Youn Mok(목소연),Hyun Cheol Shin(신현철),Sanghyun Lee(이상현) 충남대학교 농업과학연구소 2012 농업과학연구 Vol.39 No.1
The purpose of this study was to evaluate the potential of naturally occurring aldose reductase (AR) inhibitors from white-color natural products (Aruncus dioicus var. kamtschaticus, Chionanthus retusa, Cosmos bipinnatus, Hibiscus syriacus, Hydrangea paniculata, Magnolia denudata, Prunus padus, Robinia pseudo-accacia, Rhododendron mucronulatum for. albiflorum, Spiraea blumei, and Spiraea prunifolia var. simpliciflora). The MeOH extract of white-color natural products were tested on rat lens AR inhibition in vitro. Among them, the MeOH extract of R. mucronulatum for. albiflorum showed highest inhibition on AR (IC50 value, 1.07 ㎍/ml). These results suggested that R. mucronulatum for. albiflorum, a white-color natural product, could be a useful resource in the development of a novel AR inhibitory agent against diabetic complications.
Determination of hesperidin in mixed tea by HPLC
한샘,목소연,김혜민,이정민,이동구,이숙영,김종기,김선주,이상현,Han, Saem,Mok, So-Youn,Kim, Hye-Min,Lee, Jeong-Min,Lee, Dong-Gu,Lee, Sook-Young,Kim, Jong-Kee,Kim, Sun-Ju,Lee, Sang-Hyun Institute of Agricultural Science 2011 Korean Journal of Agricultural Science Vol.38 No.2
The content of hesperidin in the mixed tea, which was composed of dried orange peel, laurel leaf, mulberry leaf, silver magnolia leaf, oriental melon tap, cassia seed, and licorice root, was determined by high performance liquid chromatography (HPLC). Hesperidin was quantified by a reverse phase column with gradient solvent system (watcr:acetonitrile = 80:20 to 35:65 for 30 min) and UV/VIS detection (280 nm). The How rate was kept constant at 1.0 ml/min. The content of hesperidin in the mixed tea was measured in depending on extraction time 1, 2, 3, and 4 min (29.07, 52.39, 52.45, and 88.35 mg/g, respectively).
영릉향으로부터 분리된 Foenumoside B의 부위별 함량비교 연구
엄영란,목소연,신재혁,김슬기,조병헌,조용백 한국생약학회 2014 생약학회지 Vol.45 No.1
Lysimachia foenum-graecum (LF) has been used for home remedy of common cold and headache in China. Foenumoside B from LF has been reported for anti-obesity effects. We used foenumoside B as a marker for content evaluation of different parts of LF. Ethanol extract of LF was used for isolation of foenumoside B and purified further by column chromatography. The structure was identified as foenumoside B by interpretation of spectroscopic analysis, including 1H-, 13C-NMR and FT-ICR-MS. High-performance liquid chromatography (HPLC) method was used to compare the quantitative level of foenumoside B in different parts of LF. Foenumoside B contents in the leaf, stem, and aerial part showed significant differences. Contents of foenumoside B was detected highly in the leaf extracts. The results would be useful for efficient extraction of foenumoside B in LF.
여주(Momordica charantia)의 산화적 스트레스 개선 효과
신승미,목소연,이상현,조계만,조은주,김현영 대한암예방학회 2011 Journal of cancer prevention Vol.16 No.1
This study was focused on the evaluation of antioxidative effect of bitter melon (Momordica charantia L.). Bitter melon was extracted with methanol and then fractionated into 4 fractions (hexane, methylene chloride, ethyl acetate, and butanol fractions). The protective effect of bitter melon against oxidative stress was investigated under in vitro and cellular system. The extract and fractions from bitter melon exerted strong scavenging activity of 1,1-diphenyl-2-picrylhydrazyl and hydroxyl radical. Protective effects of bitter melon from nitric oxide (NO), and peroxynitrite under cellular oxidative stress model using LLC-PK1 cell were observed. The induction of oxidative stress by treatments of free radical generators led to the decrease in cell viability and elevation in NO formation. However, the treatment of fractions from bitter melon alleviated the oxidative stress by free radicals through increase in cell viability and inhibition in NO formation. The present study indicates that bitter melon alleviates oxidative stress and it plays as antioxidant. In particular, among the extract and fractions, the butanol fraction showed the highest protective effect from oxidative stress, suggesting that the butanol fraction from bitter melon includes the promising protective compounds from oxidative stress. (Cancer Prev Res 16, 86-92, 2011)
여주(Momordica charantia)의 RAW 264.7 세포에서의 항염증 효과
신승미,김현영,목소연,이상현,조은주,조계만 대한암예방학회 2012 Journal of cancer prevention Vol.17 No.1
We investigated the anti-inflammatory activity of bitter melon (Momordica charantia L.) in this study. Bitter melon was extracted with methanol and then fractionated into 4 fractions (hexane, methylene chloride, ethyl acetate, and butanol fractions). The extract and fractions from bitter melon showed the strong scavenging activities of nitric oxide (NO). Also, in order to investigate the anti-inflammatory activity of bitter melon, we employed NO-induced cellular inflammatory system using RAW 264.7macrophage cell. Among the extract and fractions, MeOH extract and butanol fraction showed the highest protective effect from inflammation through increase in cell viability. In addition, bitter melon scavenged NO generated by both exotoxin SNP and endotoxin lipopolysaccharide (LPS) & interferon-gamma (IFN-γ). The results represent that bitter melon would have the protect role against inflammation induced by exotoxin and endotoxin. In particular, among the extract and fractions, the butanol fraction showed the highest protective effect from inflammation, suggesting that the butanol fraction from bitter melon includes the promising protective compounds from inflammation.
Determination of hesperidin in mixed tea by HPLC
한샘,이상현,목소연,김혜민,이정민,이동구,이숙영,김종기,김선주 충남대학교 농업과학연구소 2011 농업과학연구 Vol.38 No.2
The content of hesperidin in the mixed tea, which was composed of dried orange peel, laurel leaf, mulberry leaf, silver magnolia leaf, oriental melon tap, cassia seed, and licorice root, was determined by high performance liquid chromatography (HPLC). Hesperidin was quantified by a reverse phase column with gradient solvent system (water:acetonitrile = 80:20 to 35:65 for 30 min) and UV/VIS detection (280 nm). The flow rate was kept constant at 1.0 ml/min. The content of hesperidin in the mixed tea was measured in depending on extraction time 1, 2, 3, and 4 min (29.07, 52.39, 52.45, and 88.35 mg/g, respectively).
HPLC를 이용한 지치중의 부위별 Luteolin 정량
한샘,박준언,이설림,목소연,김혜민,이정민,안영희,이상현 韓國藥用作物學會 2010 한국약용작물학회지 Vol.18 No.5
The content of luteolin in the different parts of Lithospermum erythrorhizon was determined by high performance liquid chromatography (HPLC). Luteolin was quantified by a reverse-phase column with gradient solvent program (water : ACN = 90 : 10 to 77 : 23 for 60 min). UV detection was conducted at 330 nm. The content of luteolin was measured in the seeds (0.28 mg/g), stems (0.30 mg/g), and roots (0.16 mg/g) of L. erythrorhizon. The presence of luteolin in Lithospermum species is important in agricultural crop production for increasing the amounts of clinically available medicine and health supplements.