• 약학회지
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• 제40권2호
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• pp.149-154
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• 1996

A high-performance liquid chromatographic method for the determination of ${\beta}$-sitosterol in the unsaponifiable fraction of Zea mays L. and its related drug preparations using a cholesterol as an internal standard was investigated. They were saponified with 20% methanolic KOH solution. Phytosterols in the reaction mixture were extracted with diethyl ether and separated on silica gel TLC plate with n-hexane-diethyl ether(40:60) as the solvent and then were scraped off. They were separated by reversed phase high perfomance liquid chromatography on Inertsil ODS-2 column with detection at 205nm. Cholesterol and ${\beta}$-sitosterol were resolved from interferences by adjusting the acetonitrile content in the MeOH-tetrahydrofuran-$H_2O$ eluent. The detection limit of ${\beta$-sitosterol was 0.43${\mu}$g.

• 대한화학회지
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• 제14권4호
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• pp.281-286
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• 1970

A experiment was performed to investigate the stigmasterol and campesterol in the Panax ginseng. Crude sterol fraction obtained from the ginseng was analysed by TLC and quantitative determination of ${\beta}$-sitosterol was performed with colorimetric method. The results were summarized as follwer, 1. It was observed with ethyl ether-petroleum ether extract of the ginseng that there was no evidence of showing the presence of both free capesterol and stigmasterol but that only ${\beta}$-sitosterol was presence in an significant amount. 2. Average amount of the ${\beta}$-sitosterol was 0.20-0.35mg per gram of the sample.

• 동의생리병리학회지
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• 제19권6호
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• pp.1528-1533
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• 2005

To evaluate the anti-hyperlipidemic effect of Brassica rapa L. and its major compound, $\beta$-sitosterol, the present study was undertaken, hypercholesterolemia was induced in rats with poloxamer-407, Triton WR-1339, 30% corn oil high cholesterol diet. The ethanol extract of Brassica rapa L. significantly decreased total cholesterol (TC), phospholipid, triglyceride at doses of 200 mg/kg, and $\beta$-sitosterol significantly exerted anti-hyperlipidemic activity at a dose of 15 mg/kg in rats with hyperlipidemia. Taken together, Brassica rapa L. and $\beta$-sitosterol can be useful agents for the prevention or treatment of hyperlipidemia.

• 대한화장품학회지
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• 제41권1호
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• pp.73-83
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• 2015

황칠나무(Dendropanax mobifera Lev.)는 두릅나무과에 속하는 난대성 수종으로 대한민국 남쪽지방에 주로 분포하며 전통적인 민간요법 약재로 사용되어 왔으나 지금까지 피부에서의 효능이 잘 알려지지 않았다. 우리는 본 연구에서 황칠나무 잎의 열수추출물과 n-hexane 분획물에서 1-tetradecanol과 ${\beta}$-sitosterol 성분을 분리정제하여 다양한 피부개선효과와 탈모방지효과를 검증하였다. 1-tetradecanol의 타이로시나아제 활성 저해 효과는 열수추출물과 n-hexane분획물 보다 높은 저해 활성이 나타났다. 그리고 B16F10 세포를 이용한 멜라닌 양을 측정한 결과 1-tetradecanol은 세포독성 없이 농도 의존적으로 멜라닌 양이 감소됨을 확인하였다. 실험동물을 이용한 경표피수분손실량(TEWL)에서도 1-tetradecanol에서 수분 손실이 가장 낮게 나타났다. ${\beta}$-sitosterol의 탈모 방지에 대한 효과는 HR-1 hairless mice의 성장 주기별 특성을 이용하여 관찰하였다. 그 결과 ${\beta}$-sitosterol을 처리한 마우스의 탈모는 지연되었고 모발의 밀도도 가장 높게 나타났다. 그러므로 황칠 n-hexane분획물에서 분리한 1-tetradecanol과 ${\beta}$-sitosterol이 미백과 보습 용도의 화장품 기능성 원료 및 탈모 개선에 가능성이 있는 화장품소재로서 상업적 발전의 가능성을 보여주고 있다.

• 한국토양비료학회지
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• 제15권4호
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• pp.251-257
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• 1982

광조사시간(光照射時間)에 따른 대두유식물(大豆幼植物)의 지방산(脂防酸)과 sterol 조성변화를 경시적으로 분석(分析)한 결과(結果)를 요약(要約)하면 다음과 같다. 1. 발아생육기간(發芽生育期間)동안 광조사시간(光照射時間)이 길수록 배축부(胚軸部)의 linoleic acid와 linolenic acid조성(組成)은 증가하였고 palmitic과 stearic acid는 감소(減少)하였다. 2. 발아후(發芽后) 2 일(日)째 근부(根部)의 palmitic과 linolenic acid는 광조사시간(光照射時間)이 길수록 감소(減少)하였고, stearic과 oleic acid는 증가하였다. 3. 발아생육기간(發芽生育期間)동안 자엽부(子葉部)에서 stigmasterol이 주(主)sterol이었고 배축부(胚軸部)와 근부(根部)에서는 sitosterol이 주(主)sterol이었다. 4. 발아후(發芽后) 6 일(日)째의 광조사(光照射) 24시간(時間)에서, 배축부(胚軸部)의 sitosterol이 가장 높았다. 5. 암상태(暗狀態)와 광조사(光照射) 24시간(時間)에서 근부(根部)의 sitosterol조성(組成)은 생육기간(生育期間)이 경과할수록 감소(減少)하였고, 광조사(光照射) 16시간(時間)에서는 sitosterol조성(組成)이 증가하였다.

• 동의생리병리학회지
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• 제21권4호
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• pp.884-890
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• 2007

A mechanism of hair cell damage caused by noise and ototoxic agents is mediated through generation of free radicals and reactive oxygen species(ROS). It is known that most of animals have defense systems of ROS that protect against ROS, and the cochlea of animals also has ROS defense system, which appear efficient in detoxifying ROS generated under normal condition. This system includes several antioxidant enzymes such as superoxide dismutase(SOD), catalase(CAT), glutathione peroxidase (GPX), and glutathione reductase(GR). The radix of Pueraria thunbergiana(P. thunbergiana) is traditionally prescribed to attenuate the clinical manifestation of inner ear dysfunction and various clinical situations including fevers, gastrointestinal disorders, skin problems, migraine headaches, lowering cholesterol, and treating chronic alcoholism in Oriental Medicine. In the present study, to investigate the protection mechanism of ${\beta}-sitosterol$ from P. thunbergiana on cisplatin cytotoxicity toward HEI-OC1, we measured the effects of ${\beta}-sitosterol$ on activities of SOD, CAT, GPX, and GR in cisplatin treated cells. SOD, CAT, GPX, and GR activities were significantly increased in the presence of 0.001-0.1 ${\mu}g/ml$ of ${\beta}-sitosterol$ compared to the control group. These results indicate that ${\beta}-sitosterol$ protects cisplatin-induced HEI-OC1 cell damage through increasing the antioxidant enzyme system such as SOD, CAT, GPX, and GR.

• Asian-Australasian Journal of Animal Sciences
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• 제6권2호
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• pp.243-248
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• 1993

The effect of dietary lipid factors (plant and animal oil, cholesterol and ${\beta}$-sitosterol) on the liver, serum, and egg yolk cholesterol levels of the laying hen was studied. Single Comb White Leghorn laying hens, at 28 weeks of age, were fed two basal diets containing 8.0% soybean oil or 8.0% fish oil, with or without supplemental cholesterol (1.0%), ${\beta}$-sitosterol (2.0%) or combinations of both. Restricting caloric intake resulted in significantly (p<.05) decreased egg production and the total amount of cholesterol excreted via the egg was significantly (p<.05) different among treatment groups. Cholesterol supplementation to the two basal diets resulted in a significant elevation of liver, serum and egg yolk cholesterol levels. The addition of ${\beta}$-sitosterol lowered the cholesterol levels in liver and serum, while increased in the egg yolk (SO + ST, FO + ST). The anticholesterogenic effect of dietary ${\beta}$-sitosterol was not clearly exhibited in this study.

• Applied Biological Chemistry
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• 제48권4호
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• pp.425-430
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• 2005

[${\beta}-sitosterol$]은 식물 스테롤로서 인간의 전립선암과 대장암 세포의 성장을 억제하고 생체내 콜레스테롤 농도를 감소시킨다. 본 연구에서는 쑥갓세포 배양에서 ${\beta}-sitosterol$ 생산의 최적화 연구를 수행하였다. 그래서 쑥갓(Chrysanthemum coronarium L.)으로부터 캘러스 유도는 NAA와 BAP의 농도가 각각 1 mg/l의 조합에서 최적이었으며 이들 캘러스로부터 현탁배양 세포주를 확립하였다. 현탁 배양시 초기 세포농도 2 g DCW/l에서 조성이 각각 1배인 탄소원(30 mg/l), 질소원(1900 mg/l $KNO_3$, 1650mg/l $NH_4NO_3$), 무기인산원(170 mg/l)을 포함하는 MS 배지에서 ${\beta}-sitosterol$ 생산이 최적으로 나타났다. Shake-flask를 이용한 현탁배양에서 ${\beta}-sitosterol$의 최대 생산량은 $150{\mu}g/g$ DCW이었다. 그리고 공기부유식 생물반응기의 배양에서는 100 cc/ml의 통기량에서 ${\beta}-sitosterol$의 생산이 $142.8{\mu}g/g$ DCW으로 나타났다.

• 생약학회지
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• 제27권4호
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• pp.336-341
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• 1996

The roots of Korean Astragalus membranaceus Bunge. (Leguminosae), Astragali Radix, were extracted following general methods. During these extractions, first of all, 1,2-benzendicarboxylic acid diisononylester(compound A), ${\beta}-sitosterol(compound\;B)$, $3-0-{\beta}-D-galactopyranosyl-{\beta}-sitosterol(compound\;C)$ and $stigmast-4-en-6{\beta}-ol-3-one(compound\;D)$ were isolated. Three of these compounds were identified the first time isolation from the genus of Astragalus.

• 한국식품저장유통학회:학술대회논문집
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• 한국식품저장유통학회 2003년도 춘계총회 및 제22차 학술발표회
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• pp.104.2-105
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• 2003

Plant steryl esters have good effects on plasma cholesterol level and are used as functional food ingredient. Conjugated linoleic acid (CLA) presents mainly in animal foods and has a good benefit and medium chain fatty acids (MCFAs) are a rapid energy source for human. In this study, we produced the ${\beta}$-sitosterol esters from CLA and MCFAs using various lipases as catalysts. Among lipases, AYS (from Candida rugosa) was the most effective for synthesis of ${\beta}$-sitosterol esters in the presence of water (24.35% conversion) or hexane (25.33% conversion). The second esterification extent was obtained by lipase AK (from Pseudomonas sp), showing 10.26% conversion in water and 15.94% conversion in hexane, respectively. The reaction condition was 1:3 molar ratio (${\beta}$-sitosterol:fatty acid, 1:3) and stirred (175 rpm) at 55$^{\circ}C$ in water bath shaker for 48h.