• 제목/요약/키워드: biological constituents

검색결과 321건 처리시간 0.021초

천마의 휘발성 향기성분 (Volatile Flavor Constituents in the Rhizoma of Gastrodia elata)

  • 김용규;이종원
    • Applied Biological Chemistry
    • /
    • 제40권5호
    • /
    • pp.455-458
    • /
    • 1997
  • Crude oils in the rhizoma of fresh and dried Gastrodia elata were obtained by a simultaneous steam distillation and extraction(SDE) method using n-pentane/diethyl ether (1 : 1) as solvent, and their volatile constituents were analyzed by gas chromatography-mass spectrometry(GC/MS) A total of 39 volatile flavor constituents (11 acids, 13 alcohols,6 hydrocarbons,7 carbonyls,2 esters) and 25 constituents (6 alcohols, 13 acids, 4 hydrocarbons, 1 carbonyl, ester) were identified in the fresh and dried Gastrodia elate respectively. The major volatile components of the fresh and dried sample were hexadecanoic acid(66.78%, 50.72%), 9-hexadecenoic acid(8.07%, 9.58%), heptadecanoic acid(2.01%, 0.13%), pentadecanoic acid(6.41%, 4.94%), p-cresol(1.43%,0.52%) and cyclododecene(1.83%, 6.00%).

  • PDF

천연물 연구에서의 Peroxide 성분 (Peroxide Constituents in the Natural Product Research)

  • 이강노
    • 생약학회지
    • /
    • 제22권3호
    • /
    • pp.145-155
    • /
    • 1991
  • Peroxides in natural products have been recently received a considerable attention due to their various biological and pharmacological properties. Nearly 300 peroxides have been isolated and structually characterized from natural sources, mainly as constituents of Compositae and marine sponge, and occur randomly in about 10 other plant families. Among peroxides studied, sesquiterpene endoperoxide, quinghaosu, has been already clinically applied as a new antimalarial drug. Based on the peroxides reported, structural classification, natural distribution and biological and pharmacological activities are reviewed. Color reagent and spectroscopic identification of peroxide are also described.

  • PDF

Chemical Constituents of the Himalayan Yew, A Review

  • Das, Biswanath;Anjani, G.
    • Natural Product Sciences
    • /
    • 제4권4호
    • /
    • pp.185-202
    • /
    • 1998
  • A large number of chemical constituents have been reported from the Himalayan yew [Taxus baccata (Linn) or T. wallichiana (Zucc)]. These constituents are mainly taxoids and phenolics. Taxol, a lead anticancer agent, is the most important constituent. Other compounds have also been found to possess interesting biological properties. The literature concerning the chemistry and bioactivity of the constituents of the Himalayan yew has been briefly reviewed.

  • PDF

Bioactive Constituents of Marine Sponges of the Genus Spongosorites

  • Bao, Baoquan;Hong, Jongki;Lee, Chong-O.;Cho, Hee Young;Jung, Jee H.
    • 한국해양바이오학회지
    • /
    • 제1권3호
    • /
    • pp.144-155
    • /
    • 2006
  • This report reviews the literatures on chemical constituents of marine sponges of the genus Spongosorites and also highlights our own research. Specific biological activities of the metabolites from these sponges include: cytotoxic, antitumor, antibacterial, antifungal, antiviral, anti-inflammatory, and other pharmacological activities.

  • PDF

신미종(辛味種)고추의 추숙(追熟)에 관(關)한 생리화학적(生理化學的) 연구(硏究) [제 6 보(第 6 報)] -부위별(部位別)과 Capsaicin 동족체별(同族體別)로 본 신미성분(辛味成分)의 변화(變化)- (Physio-chemical studies on the after-ripening of hot pepper fruits (part 6) -Hot-taste component in different parts and of capsaicin homologues-)

  • 이성우
    • Applied Biological Chemistry
    • /
    • 제14권2호
    • /
    • pp.157-163
    • /
    • 1971
  • 신미종(辛味種) 고추의 추숙(追熟)에 따른 신미성분(辛味成分)의 변화(變化)를 부위별(部位別)과 capsaicin 동족체별(同族體別)로 측정(測定) 고찰(考察)한 결과(結果)는 다음과 같다. (1) 추숙(追熟)에 따라 capsaicin homologues의 조성(組成)에 거의 변화(變化)가 없었다. (2) 과육부(果肉部)(태좌(胎座), 격벽(隔壁), 과피(果皮)) 신미성분(辛味成分)의 건물중당(乾物重當) 함유율(含有率)(%)이 추숙(追熟)에 따라 증가(增加)하고 있다. 이것은 신미성분(辛味成分)의 생성(生成)과 고형물소장(固形物消長)사이의 상관관계(相關關係)의 결과(結果)라고 보겠다. (3) 태좌(胎座) 격벽부(隔壁部)의 신미성분(辛味成分)은 그함량(含量)이 매우 높고 또 chi.-onset stage까지 증가(增加)하고 그후(後)는 감소(減少)하는데 비(比)하여 과피(果皮)의 신미성분(辛味成分)은 줄곧 증가(增加)하고 있어서 신미성분(辛味成分)의 이동(移動)을 짐작할수 있었다. (4) 종자(種子)의 신미성분(辛味成分)은 함량(含量)이 매우 낮으나 추숙(追熟)에 따라 조금씩 증가(增加)하고 있다.

  • PDF

Essential Oil of Marrubium vulgare: Chemical Composition and Biological Activities. A Review

  • Yabrir, Benalia
    • Natural Product Sciences
    • /
    • 제25권2호
    • /
    • pp.81-91
    • /
    • 2019
  • Marrubium vulgare, plant species belonging to Marrubium genus, is widespread in the Mediterranean areas, introduced elsewhere and also cultivated in many countries. Its oil is recognized to possess a considerable biological activities with varied chemical composition. This paper aims to overview the chemical composition and biological activities of M. vulgare essential oil's considered as a medicinal plant, widely used in folk medicine overall the world. In essential oils of M. vulgare, germacrene D, ${\beta}$-caryophyllene, ${\beta}$-bisabolene, bicyclogermacrene and carvacrol are generally considered as either mains or minor constituents and each species presents its own composition. Sesquiterpenoids were the dominant fraction while monoterpenoids were present in appreciable or in trace amount. Oxygenated fractions dominated in monoterpenes however, hydrocarbon fraction overpowered in sesquiterpenes. These oils are biologically active, they exhibit an antioxidant and antimicrobial activities and other activities. Due to the variability of composition of essential oil, further studies are necessary, particularly regarding their chemical's which may cause an important change in the biological activities of oils and probably defined different chemotype.

밀감 쥬스 향기(香氣) 성분(成分)의 정량(定量) (Quantitative Determination of Flavor Constituents of Korean Milgam (Citrus unshiu) Juice)

  • 김호;조도현;박연희;이춘영;이양희
    • Applied Biological Chemistry
    • /
    • 제23권2호
    • /
    • pp.106-114
    • /
    • 1980
  • 제주산 밀감 juice의 향기성분을 질소 gas로 추출하여 gas liquid chromatography로 동정하였고 각 성분의 extraction coefficient를 사용하여 함량을 구하였다. 50여개의 peak중 26성분을 동정하였다. 향기성분중 ethanol이 140ppm이며 limonene이 120ppm으로 이 두 성분이 가장 중요한 성분으로 밝혀졌다.

  • PDF

털진달래(Rhododendon mucronulatum Turcz. var. ciliatum Nakai) 정유의 성분분석과 독성평가 (Composition and Cytotoxicity of Essential Oil from Korean rhododendron (Rhododendon mucronulatum Turcz. var. ciliatum Nakai))

  • 박유화;김성문
    • Applied Biological Chemistry
    • /
    • 제51권3호
    • /
    • pp.233-237
    • /
    • 2008
  • 우리나라의 자생식물인 털진달래(Rhododendon mucronulatum Turcz. var. ciliatum Nakai)지상부위로부터 정유를 얻고, 휘발성분을 headspace(HS)와 solid-phase microextraction(SPME)법으로 흡착시킨 다음 GC-MS로 분석하였다. 털진달래 정유에는 탄화수소 15종, 알코올 3종, 아세테이트 1종 등 총 19종의 화학성분이 함유되어 있었으며, 다함량 성분은 2-${\beta}$-pinene(16.1%), camphene(11.9%), ${\delta}$-3-carene(11.4%), d,l-limonene(9.5%), and ${\gamma}$-terpinene(9.5%)이었다. SPME법으로 흡착된 시료에는 탄화수소 13종, 알코올 1종, 질소화합물 1종 등 총 17종의 휘발성 화학물질이 함유되어 있었고, 이들 중 다함량 성분은 camphene(19.6%), 2-${\beta}$-pinene(18.0%), ${\delta}$-3-carene(17.4%), timethyl hydrazine(9.7%), ${\gamma}$-terpinene(8.5%), and d,l-limonene(5.5%)이었다. 그리고 HS법으로 흡착된 시료에는 탄화수소 11종, 알코올 1종, 질소화합물 1종 등 총 13종의 휘발성 화학물질이 함유되어 있었으며, 이들 중 다함량 성분은 camphene(25.8%), ${\delta}$-3-carene(24.8%), 2-${\beta}$-pinene(20.2%), d,l-limonene(5.4%), tricyclene(5.1%), trimethyl hydrazine(4.6%)이었다. 털진달래 정유의 향취는 coniferous, balsamic, woody하였으며, HaCaT 각질형성세포에 대한 $IC_{50}$ 값은 0.030 ${\mu}g/mg$이었다.

흑삼의 화학성분 및 생리활성에 대한 최근 연구 (Recent Advances in Studies on Chemical Constituents and Biological Activities of Korean Black Ginseng(Panax ginseng C. A. Meyer))

  • 남기열;김영수;손미례;박종대
    • 생약학회지
    • /
    • 제46권3호
    • /
    • pp.173-188
    • /
    • 2015
  • We have conducted a comprehensive literature review regarding the chemical constituents and biological activities of Korean black ginseng(Panax ginseng C. A. Meyer), three to nine times-steamed and dried ginseng, which shows strong black color through Maillared browning reaction. It has been reported that some chemically deglycosylated and transformed saponins are obtained from black ginseng as artifacts produced during intensive steaming. They have been known to be ginsenosides Rg3, Rg4, Rg5, Rg6, Rh1, Rh2, Rh4, Rk1 and Rk3, quite different from those of red ginseng, among which ginsenosides Rg3, Rg5 and Rk1 are considered to be major components. And also, black ginseng has been recently found to demonstrate anticancer, recovery from learning and memory damages, hypontensive, antidiabetic, antiobesitic, tonic and antiatopic activities, together with antioxidative and exercise performance improving activities, exhibiting their effects to be a little bit stronger than those of red ginseng. These findings suggest that black ginsng might play an important role in the development of promising functional foods and drugs from the viewpoint of the chemical composition and biological activities of black ginseng with a distinction from those of white and red ginsengs. In this review, the authors will survey and evaluate further functions of black ginseng with a focus on its physicochemical properties and biological activities.