• 생약학회지
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• 제31권1호
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• pp.51-56
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• 2000

This study was carried out to evaluate cytotoxic effects of the roots of Sophora flavescens Ait. extracts on murine leukemia tumor cells lines $(P388D_1\;and\;L1210)$. Disruptions in cell organelles were determined by 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyl-2H-tetrazolium bromide (MTT) assay. The comparison of $IC_{50}$ values of the ethyl acetate of Sophora flavescens Ait. extract in leukemia cell lines showed that their susceptibility to these extracts decreased in the following order : Adriamycin>Fr.4>Fr.5>Fr.3>Fr.1>Fr.2 by the MTT assay. These results suggest that the fraction 4 of the ethyl acetate soluble extract of Sophora flavescens Ait. may be a valuable choice for the studies on the treatment of murine leukemia cell lines.

• Journal of Applied Biological Chemistry
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• 제65권3호
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• pp.121-128
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• 2022

본 연구는 꿀풀과 식물 종자 추출물의 항산화 활성 평가를 통해 식물 유래 천연 항산화제를 탐색하기 위해 진행되었다. 충실률 90% 이상이고 발아율이 50% 이상인 종자를 대상으로 하였다. 총 페놀성 화합물 함량은 속단(6.2 mg GAEs/g seed), 향유(4.5 mg GAEs/g seed) 순으로 높게 나타났다. 총 플라보노이드 함량은 향유(1.0 mg QEs/g seed), 속단(0.6 mg QEs/g seed) 순으로 높게 나타났다. DPPH 라디칼 소거활성은 종자 추출물의 EC₅₀ 값을 기준으로 향유(27.5 ㎍/mL), 쥐깨풀(29.2 ㎍/mL), 꿀풀(33.3 ㎍/mL) 순으로 높게 나타났다. ABTS 라디칼 소거활성은 꿀풀(25.6 ㎍/mL), 향유(25.9 ㎍/mL), 쥐깨풀(27.6 ㎍/mL)순으로 높게 나타났다. FRAP 평가는 꿀풀(2910.4 μM Fe(II)/g extract), 향유(2836.2 μM Fe(II)/g extract), 쥐깨풀(2754.4 μM Fe(II)/g extract) 순으로 높게 나타났다. 항산화 활성을 기반으로 한 군집분석에 따라 10종은 항산화 활성이 낮은 group 1에서 활성이 높은 group 3까지 3개의 group으로 분류하였으며, 향유, 쥐깨풀, 꿀풀 종자는 group 3에 속하였다.

• Journal of Applied Biological Chemistry
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• 제57권3호
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• pp.247-250
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• 2014

인삼 추출물 제조 부산물인 인삼박의 지용성 성분을 n-hexane 으로 추출하고, 추출물의 항산화 및 항암 활성을 인삼의 n-hexane 추출물과 비교하였다. 인삼박의 hexane 추출물(HEGM)의 총 폴리페놀 화합물 함량은 188.8 mg/100 g으로, 인삼의 hexane 추출물(HEG)의 82%를 함유하고 있었다. HEGM의 DPPH 유리 라디칼 소거활성은 $IC_{50}$이 2.07 mg/mL이었고, 이는 총 폴리페놀 함량과 상관관계를 갖는 것으로 나타났다. HEG가 농도에 비례하여 인체 폐암세포(A549, $GI_{50}=20.0{\mu}g/mL$)와 대장암세포 (SNU-C4, $GI_{50}=37.0{\mu}g/mL$)의 생육을 억제하는 것과 동일한 양상으로 HEGM도 폐암세포($GI_{50}=34.0{\mu}g/mL$)와 대장암세포($GI_{50}=45.2{\mu}g/mL$)의 생육을 효과적으로 억제하였다. 따라서, 본 연구는 인삼박에서 얻어진 HEGM이 항산화 및 항암 활성을 갖는 자원으로서의 활용 가능성을 보여주었다.

• 대한한의학방제학회지
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• 제21권1호
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• pp.177-185
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• 2013

Objectives : Leejung-tang (Lizhong-tang) has been used for treatment of gastrointestinal disorders in Korea. In this study, we performed quantification analysis of five marker components, liquiritin, ginsenoside Rb1, ginsenoside Rg1, glycyrrhizin, and 6-gingerol in Leejung-tang using a ultra performance liquid chromatography- electrospray ionization-mass spectrometer (UPLC-ESI-MS). In addition, we evaluated antioxidant activity of Leejung- tang. Methods : The column for separation of five constituents used a UPLC BEH C18 ($100{\times}2.1mm$, $1.7{\mu}m$) maintained at $45^{\circ}C$. The mobile phase consisted of two solvent systems, 0.1% (v/v) formic acid in H2O (A) and CH3CN (B) by gradient flow. The flow rate was 0.3 mL/min with detection at mass spectrometer. The antioxidative activities conduct an experiment on 2,2'-azinobis(3-ethylbenzothiazoline-6-sulfonic acid) (ABTS) and 2,2-diphenyl-2-picrylhydrazyl (DPPH) radical scavenging activities of Leejung-tang. Results : Calibration curves of five marker compounds were acquired with r2 values > 0.99. The amount of the five compounds in Leejung-tang were 0.07 - 0.84 mg/g. The concentration required for 50% reduction (RC50) against ABTS radical was 119.02 ug/mL. In addition, the scavenging against DPPH radical of Leejung-tang was 11.4%, 14.5%, 19.8%, 29.6%, and 49.2% at 25 ug/mL, $50{\mu}g/mL$, $100{\mu}g/mL$, $200{\mu}g/mL$, and $400{\mu}g/mL$, respectively. Conclusions : The established LC-MS/MS method will be helpful to improve quality control of Leejung-tang. In addition, Leejung-tang is a potential antioxidant therapeutic agent.

• Preventive Nutrition and Food Science
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• 제17권2호
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• pp.116-121
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• 2012

Water extract from Pinus densiflora (WPD) was investigated for its antioxidant activity and its ability to provide protection from DNA damage. A series of antioxidant assays, including a 1,1-diphenyl-2-picrylhydrazyl (DPPH) free radical-scavenging assay, a reducing power assay, a metal-chelating assay, a superoxide radical scavenging assay, and a nitrite scavenging ability, as well as a DNA damage protection assay were performed. Total phenolic content was found to be 211.32 mg Tan/g WPD. The extract scavenged 50% DPPH free radical at a concentration of 21.35 ${\mu}g/mL$. At that same concentration, the reducing power ability of WPD was higher than that of ${\alpha}$-tocopherol. The extract chelated 68.9% ferrous ion at the concentration of 4 mg/mL. WPD showed better nitrite scavenging effect at the lower pH. Meanwhile, WPD exhibited a strong capability for DNA damage protection at 1 mg/mL concentration. Taken together, these data suggest water extract from Pinus densiflora could be used as a suitable natural antioxidant.

• 대한수의학회지
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• 제57권3호
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• pp.147-154
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• 2017

The present study was performed to evaluate the hangover relieving effect of germinated buckwheat (GB) and Sanghwang mushroom mycelium cultured in GB (SGB). Both GB and SGB showed 1,1-diphenyl-2-picrylhydrazyl radical scavenging activities and significantly increased (p < 0.001) aldehyde dehydrogenase (ALDH) activities; up to 140% increase at concentrations of $16{\mu}L/mL$. Locomotor activity test results from alcohol-SGB and alcohol-GB groups showed improved motor activities over that of the alcohol-water group at 90 min post-administration. Both alcohol-GB and alcohol-SGB groups had significantly reduced (p < 0.001) alcohol ($40.02{\pm}33.38{\mu}g/mL$, $66.01{\pm}22.04{\mu}g/mL$, respectively) and aldehyde ($5.72{\pm}0.47{\mu}g/mL$, $6.72{\pm}1.70{\mu}g/mL$, respectively) concentrations in blood compared to those in the alcohol-water group ($199.75{\pm}33.83{\mu}g/mL$, $50.43{\pm}13.88{\mu}g/mL$, respectively) at 90 min post-administration. Based on cDNA microarray analysis, expressions of ALDH genes ALDH1a7 and ALDH18a1 and cytochrome P450 (CY450) gene CYP4a30b were upregulated in the alcohol-GB and alcohol-SGB groups compared to levels in the control group. Overall, the results suggest that both GB and SGB have hangover relieving effects by reducing blood acetaldehyde levels. The molecular mechanisms may involve ALDH activation and upregulated expression of alcohol metabolism-related genes such as ALDH and CYP450.

• 생약학회지
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• 제30권4호
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• pp.351-354
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• 1999

This study was carried out to evaluate cytotoxicity of the extracts from Sophora flavescens Ait. against L1210 (lymphocytic leukemia) and $P388D_1$ (lymphoid neoplasms) cells in vitro. We have determined cytotoxicity by MTT {3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyl-2H-tetrazo-liumbromide} assay. The order of cytotoxicity of Sophora flavescens Ait. extracts against L1210 and $P388D_1$ cells in vitro is as follows: AM> EASF > CFSF > MTSF > WSF > HXSF and AM> EASF> CFSF> MTSF> HXSF> WSF. These results suggest that the ethyl acetate soluble extract of Sophora flavescens Ait may be a valuable choice for the development of antitumor agents.

• 한국식품과학회지
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• 제37권5호
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• pp.833-837
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• 2005

송화분, 참나무화분 및 백합화분에 대한 항산화 효능을 DPPH radical 소거능 및 동물조직의 지질산화 억제효능을 이용하여 평가하였다. 각 화분을 ethanol, 50% ethanol 및 물을 이용하여 추출물을 조제한 후 이들에 대한 DPPH radical 소거능을 분석한 결과 50% 소거능을 나타내는 $EC_{50}$ 값은, 송화분의 경우 50% ethanol 추출물(40.0mg/mL)이 가장 낮게 나타났으며 물 추출물(46.8mg/mL), 100% ethanol 추출물(131.2mg/mL) 순 이었다. 참나무화분에서는 50% ethanol 추출물(3.2mg/mL), 100%, ethanol 추출물(4.5mg/mL), 물 추출물(8.3mg/mL) 순이었고 백합화분에서는 100% ethanol 추출물의 $EC_{50}$값이 14.0mg/mL로, 50% ethanol 추출물(24.0mg/mL) 및 물 추출물(18.8mg/mL)에 비해 가장 낮았다. 3 종의 화분에서는 참나무 화분의 DPPH radical 소거능이 우수한 것으로 나타났다. 한편 $ascorbate-Fe^{3+}-EDTA$에 의해 유도되는 뇌조직에서의 지질산화도는 송화분, 참나무화분, 백합화분 추출물에 의해 모두 농도 의존적으로 억제되었으며 신장에서의 지질산화도 억제되었다. 그리고 이 중에서 송화분보다는 참나무와 백합화분의 효능이 우수한 것으로 나타났다. 화분 추출물에 대한 총 polyphenol의 함량을 분석한 결과 참나무화분$(32.5{\pm}2.9{\mu}g/mg\;pollen)$이 백합화분$(25.9{\pm}1.4{\mu}g/mg\;pollen)$이나 송화분$(9.3{\pm}0.7{\mu}g/mg\;pollen)$보다 높게 나타났다.

• 농업과학연구
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• 제39권4호
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• pp.511-514
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• 2012

In this study, the comparison of antioxidative effect of the methanol (MeOH) extracts from grains were investigated in vitro radical scavenging system. Ten grains (black rice, rice, barley, wheat, millet, sorghum, glutinous millet, buckwheat, phellines linteus rice and brown rice) were extracted with MeOH. Among the MeOH extracts of grains, sorghum and black rice showed effective scavenging activities of 1,1-diphenyl-2-picrylhydrazyl (DPPH) radical. The $IC_{50}$ values of sorghum and black rice were $47.4{\mu}g/mL$ and $50.6{\mu}g/mL$, respectively. In addition, black rice also exerted the strongest activities on hydroxyl radical (${\cdot}OH$) scavenging activity. Furthermore, the MeOH extracts of black rice showed effective and dose dependant scavenging activities of DPPH radical and ${\cdot}OH$. These results indicated that black rice showed strong free radical scavenging activity. It suggested that black rice could be a promising natural antioxidant against free radical-induced oxidative damage.

• 대한화장품학회지
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• 제36권4호
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• pp.303-314
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• 2010

본 연구에서는 잣나무 잎 추출물의 항균, 항산화 및 성분 분석에 관한 연구를 수행하였다. 피부 상재균에 대한 항균활성 측정결과, Propionibacterium acnes (P. acnes), Staphylococcus aureus (S. aureus), Pityrosporum ovale (P.ovale) 및 Escherichia coli (E. coli)에 대한 ethyl acetate 분획의 MIC는 각각 0.06 %, 0.25 %, 0.13 %, 0.50 %로 나타났으며, P. acnes, P. ovale 및 S. aureus에서 큰 항균활성을 나타내었다. 잣나무 잎 추출물의 free radical (1,1-diphenyl-2-picrylhydrazyl, DPPH) 소거활성($FSC_{50}$)은 aglycone 분획에서 $22.93\;{\mu}g/mL$으로 나타났다. Luminol-의존성 화학발광법을 이용한 $Fe^{3+}$-EDTA/$H_2O_2$계에서 생성된 활성산소종(reactive oxygen species, ROS)에 대한 잣나무 잎 추출물의 총 항산화능($OSC_{50}$)은 50 % ethanol extract 분획에서 $0.70\;{\mu}g/mL$, ethyl acetate 분획 및 aglycone 분획이 각각 1.04 및 $1.43\;{\mu}g/mL$으로 매우 큰 항산화능을 보였다. Rose-bengal로 증감된 사람 적혈구의 광용혈 실험에서 추출물의 세포보호 효과를 측정하였다. 잣나무 잎 추출물 분획들은 농도 의존적($5{\sim}50\;{\mu}g/mL$)으로 세포보호 효과를 나타내었다. 잣나무 잎 추출물의 가수분해로 얻은 ethyl acetate 분획은 TLC (PK-4, PK-6)와 HPLC (peak 1, peak 2)에서 2개의 주성분으로 나타났다. 이 성분들은 LC/ESI-MS/MS를 통해서 PK-6는 kaempferol-3-O-glucoside (astragalin)로, PK-4는 kaempferol-3-O-arabinoside (juglanin)로 확인되었다. 이상의 결과들은 잣나무 잎 추출물이 ROS를 소광시키거나 소거함으로써, 그리고 ROS에 대항하여 세포막을 보호함으로써 생체계, 특히 태양 자외선에 노출된 피부에서 항산화제로서 작용할 수 있음을 가리키며, 잣나무 잎 성분 분석, 그리고 피부 상재균에 대한 항균작용으로부터 항산화, 항노화 및 항균성 화장품 소재로서의 응용 가능성이 있음을 확인하였다.