• Natural Product Sciences
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• 제20권2호
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• pp.86-90
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• 2014

Phytochemical investigation of the 80% MeOH extract from the leaves of Hosta longipes resulted in the isolation of sixteen compounds (1 - 16). The structures of the compounds were elucidated by spectroscopic methods to be methyl 10,10-dimethoxydecanoate (1), methyl 10-hydroxy-8E,12Z-octadecadienoate (2), methyl coriolate (3), trans-phytol (4), phytene-1,2-diol (5), phyton (6), (3S,5R,6S,7E,9R)-7-megastigmene-3,6,9-triol (7), (3S,5R,6S,9R)-3,6,9-trihydroxymegastigman-7-ene (8), shikimic acid (9), p-coumaramide (10), trans-N-p-coumaroyltyramine (11), cis-N-coumaroyltyramine (12), tryptophan (13), thymidine (14), adenosine (15), and deoxyadenosine (16). Compound 1 was synthesized, but not yet isolated from natural source, and compounds 2-16 were isolated for the first time from this plant source.

• Natural Product Sciences
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• 제20권2호
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• pp.71-75
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• 2014

Nine triterpenes were isolated from the petroleum ether and MeOH extract of Perilla frutescens var. acuta leaves. Their structures were determined to be arjunic acid (1), maslinic acid (2), oleanolic acid (3), euscaphic acid (4), tormentic acid (5), 3-O-trans-p-coumaroyltormentic acid (6), 28-formyloxy-$3{\beta}$-hydroxy-urs-12-ene (7), ursolic acid (8), and corosolic acid (9) by spectroscopic methods. The compounds 1, 2, 4, 6, and 7 were isolated for the first time from this plant and the Genus Labiatae. The isolated compounds (1-9) were tested for cytotoxicity against four human tumor cell lines (A549, SK-OV-3, SK-MEL-2, and HCT-15) in vitro using a Sulforhodamin B bioassay.

• Natural Product Sciences
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• 제16권1호
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• pp.32-38
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• 2010

From the polar fractions of a 70% EtOH extract of the flower buds of Lonicera japonica (Caprifoliaceae), ten constituents were isolated and identified as iridoid glycosides 7-dehydrologanin (7-ketologanin, 2), secologanin dimethyl acetal (3), (E)-aldosecologanin (centauroside, 5), dimethyl secologanoside (6), secoxyloganin (7) and epivogeloside (8). Other identified constituents were 1-O-$\beta$-D-glucopyranosyl-(2S,3S,4R,8E/Z)-2-[(2R)-2-hydroxy(docosanoyl, tricosanoyl, tetracosanoyl, pentacosanoyl)amino]-8-octadecene-1,3,4-triol (1), uracil (4), D-mannitol (9), and sucrose (10). Among them, 1, 2, 4, and 10 were isolated for the first time from this plant.

• 한국식품영양학회지
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• 제32권1호
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• pp.41-49
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• 2019

Carotene, xanthophyll, carotenoid anthocyan, phycopyrine, chlorophyll, and monascus pigments are used as natural coloring agents since they are more stable to human body than synthetic coloring agents. Among them, monascus pigments are a natural red pigment produced by the Monascus purpureus. For the development of edible paint using natural pigment, Monascus purpureus strain was cultured at a temperature of $35^{\circ}C$ for 15 days on a PDYA plate and liquid medium to produce a red pigment. In addition, a large amount of the red pigment was extracted from Hongkuk Koji in parallel with water extraction and ultrasonic wave extraction. At this time, the yield of ultrasonic extract was 2~4 times higher. Thus, Monascus purpureus strains, etc. were prepared by freeze-drying powder. In conclusion, natural paints made with red pigments have enabled the development of been edible paints that can be used as eco-friendly materials with good viscosity, enhanced spread ability and coloration.

• 대한약학회:학술대회논문집
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• 대한약학회 2002년도 Proceedings of the Convention of the Pharmaceutical Society of Korea Vol.2
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• pp.392.1-392.1
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• 2002

One of the important functions of skin is protection from harmful environments. There has been many studies for keeping skin healthy from wrinkling and pigmenting. Skin wrinkle and pigmentation could be caused by the disruption of connective tissue, free radicals and ultraviolet irradiation. In this study, the extracts obtained from 25 kinds of medicinal plants were screened. All the extracts examined were obtained by using 70% (v/v) ethanol at $60^{\circ}C$. (omitted)

• 대한약학회:학술대회논문집
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• 대한약학회 2003년도 Proceedings of the Convention of the Pharmaceutical Society of Korea Vol.1
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• pp.265.2-265.2
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• 2003

Diarylheptanoids [curcumin (1), demethoxycurcumin (2), bisdemethoxycurcumin (3), bisdimethoxymethylcurcumin (4), and 1,2-dihydrobis(de-O-methyl)curcumin (5)] were isolated from the methanolic extract of Curcuma longa L. and A new cyclic diarylheptanoiid (6) and a known compound 7 were isolated from fruits of Alnus japonica S. Diarylheptanoids (1-3) inhibited farnesyl protein transferase (FTPase) with an IC50 of 29-50 $\mu\textrm{m}$. (omitted)

• 한국식품위생안전성학회지
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• 제24권3호
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• pp.273-276
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• 2009

본 연구는 당 함량이 높고 ($12{\pm}0.1%$) pH가 낮아($3.0{\pm}0.1$) 세균보다는 효모에 의한 변패가 문제시 되고 있은 가능성 음료의 저장성을 향상시키고자 주요 천연항균제 8종의 항균력을 평가하였다. 이에 따라 대표적인 효모균주 Saccharomyces cerevisiae, Zygosaccharomyces bailii, Pichia membranaefciens, Candida albicans, Pichia anomala 5종을 대상으로 $\varepsilon$-Polylysine, 유카추출물, vitamin $B_1$ derivative, scutellaria baicalensis extract, 키토올리고당, allyl Isothiocyanate, 자당지방산에스테르, 올리고당 등 8가지 주요 항균력을 test 하여 최소저해농도 (Minimal Inhibitory Concerntration, MIC)로 나타내었다. S. cerevisiae와 Z. bailii는 올리고당 용액 10 ppm, 자당지방산에스테르 10 ppm, P. membranaefaciens와 C. albicans는 allyl isothiocyanate 10 ppm, P. anomala는 Allyl isothiocyanate 10 ppm, 올리고당 용액 10 ppm 사용 시 가징 높은 항균력을 나타냈다. 0.015% 이상의 안식향산나트륨 참가 가능성 음료에서는 다섯 효모균 모두 증식이 관찰되지 않았다. 종합적으로 S. cerevisiae, Z. bailii, P. anomala의 저항성이 P. membranaefaciens, C. albicans 보다 낮았으며, 균주별 차이는 보였으나 allyl isothiocyanate, 올리고당, 자당지방산에스테르가 큰 항균력을 보였다. 본 연구결과는 기능성 음료의 합성 보존료를 대체할 수 있는 천연항균제의 개발 및 이용에 기초 자료로 활용될 수 있을 것이다.

• Natural Product Sciences
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• 제22권4호
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• pp.231-237
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• 2016

Prolonged alcohol consumption causes alcoholic liver damage due to the generation of reactive oxygen species, the accumulation of fatty acids, and an increase in inflammatory cytokines in the liver. In this study, the protective effect of a fruit extract of Paeonia anomala (FEPA) against chronic alcohol-induced liver damage was evaluated in Sprague-Dawley rats fed an ethanol or a control Lieber-DeCarli diet for 5 weeks to induce alcoholic liver damage. FEPA (50, 25, and 10 mg/kg body weight/day) as well as the reference control silymarin (25 mg/kg body weight/day) were administered along with the ethanol diet. FEPA protected against increases in alanine aminotransferase and aspartate aminotransferase in serum and attenuated alcohol-induced increases in triglycerides, tumor necrosis factor alpha, thiobarbituric acid-reactive substances, and cytochrome P450 2E1 enzyme activity in the liver compared with the group treated with ethanol only. Anti-oxidative defenses such as the total glutathione level and glutathione peroxidase activity were increased by FEPA treatment. These results suggest that FEPA exerts protective effects against chronic alcohol-induced liver damage by attenuating hepatosteatosis and pro-inflammatory cytokine production and enhancing anti-oxidative defense mechanisms in the liver.

• 한국위성정보통신학회논문지
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• 제12권4호
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• pp.34-41
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• 2017

본 논문은 기존에 개발된 자연재난 예측 모형과 사회재난 예측 모형을 통합한 복합재난 예측 모형을 구성하기 위하여 기존 예측 모형들의 입출력 파라미터를 분석하였다. 복합 재난 예측 모형은 단일 재난이 아닌 다수의 재난이 복합적으로 일어나는 상황을 나타낸다. 이러한 복합재난은 주로 자연재난으로 인해 발생한 사회재난으로 연계되는 경우가 주를 이루기 때문에 자연재난과 사회재난 예측 모형의 연결방안에 대해 연구를 진행하였다. 기존에 개발된 예측 모형 중 재난 유형별로 몇 가지 예측 모형을 기준으로 분석하였으며 재난 유형별로 공통적으로 적용되는 입출력 파라미터가 도출되었다. 본 논문은 향 후 진행되어질 복합재난 예측 모형 구축을 위한 연구에 도움이 될 것이라 생각한다.

• 대한본초학회지
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• 제38권5호
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• pp.1-7
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• 2023

Purpose : To compare the skin damage recovery efficacy of natural Angelicae Gigantis Radix extract (N-AGR) and cultivated A. Gigantis Radix extract (C-AGR). Through this, we confirmed whether the quality standards of herbal medicines recorded in the classic books make a difference in the experimental efficacy using epithelial cells. Methods : The quality standards of medicinal herbs in the classic books and the cultivation and processing conditions of two types of A. gigas were compared. After inducing oxidative stress with H₂O₂, cytoprotective property of N-AGR and C-AGR were evaluated through cell viability. Additionally, after wound formation of epithelial JB6 cells, N-AGR and C-AGR were treated to evaluate wound healing efficacy. Result : The natural A, gigas met the excellent quality standards of the classic books. N-AGR inhibited cell death by oxidative stress induced by H₂O₂, and was superior to C-AGR. Both N-AGR and C-AGR showed dose-dependent wound healing efficacy, but N-AGR was significantly superior to C-AGR. Conclusions : Through the oxidative stress of skin and skin wound healing efficacy experiments using epithelial cells, natural A. gigas showed superior efficacy compared to cultivated A. gigas.