• 제목/요약/키워드: gallic acid glucoside gallate

검색결과 9건 처리시간 0.019초

Phenolic Compounds from Orostachys japonicus having Anti-HIV-1 Protease Activity

  • Park, Ju-Gwon;Park, Jong-Cheol;Hur, Jong-Moon;Park, Sung-Jong;Choi, Da-Rae;Shin, Dong-Young;Park, Ky-Young;Cho, Hyun-Wook;Kim, Moon-Sung
    • Natural Product Sciences
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    • 제6권3호
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    • pp.117-121
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    • 2000
  • The water extract of the aerial parts of Orostachys japonicus A. Berger showed the inhibitory activity against HIV-1 protease. From the same parts of O. Japanicus, 4-hydroxybenzoic acid, 3,4-dihydroxybenzoic acid, gallic acid and methyl gallate, together with flavonoids, kaempferol, quercetin, kaempferol $3-O-{\beta}-D-glucoside$, kaempferol $3-O-{\beta}-D-galactoside$ and quercetin $3-O-{\beta}-D-glucoside$ were isolated and characterized by spectral data.

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Studies on Biological Activity of Wood Extractives(XVI) -Antioxidant Components from the Bark of Rbus chinensis-

  • Lee, Yeon-Suk;Park, Youngki;Lee, Oh-Kyu;Park, Il-Kwon;Shin, Sang-Chul;Kang, Ha-Young;Choi, Don-Ha;Choi, Tae-Ho;Lee, Hak-Ju
    • Journal of the Korean Wood Science and Technology
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    • 제33권5호통권133호
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    • pp.86-91
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    • 2005
  • Six compounds were isolated from the EtOAc and $Et_2O$ fractions of the bark of Rhus chinensis by repeated column chromatography with $SiO_2$ and Sephadex LH-20. The structures were determined by instrumental analysis using MS and NMR spectrophotometer as: gallic acid (1), methyl gallate (2), 6, 7-dimethoxycoumarin (3), orcinol-${\beta}$-D-glucoside (4), scopoletin (5), semialactone (6). Among these compounds, 6,7-dimethoxycoumarin (3) was isolated from this plant for the first time. To measure the antioxidant activity, the DPPH radical scavenging activity test was performed. Gallic acid (1) showed the strongest activity, while orcinol-${\beta}$-D-glucoside (4), semialactone (5) and scopoletin (6) had the low activities.

붉나무 수피의 성분 (Chemical Components from the Stem Bark of Rhus javanica L.)

  • 정선채;황방연;오갑진;강신정;김미정;최우회;이경순;노재섭
    • 생약학회지
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    • 제30권3호
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    • pp.295-300
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    • 1999
  • Seven compounds were isolated from the n-BuOH extract of the dried stem barks of Rhus javanica L. On the basis of physico-chemical, spectroscopic evidences and comparison with authentic samples, the compounds $1{\sim}7$ were identified as gallic acid (1), methyl gallate (2), scopoletin (3), scopolin (4), $1,\;2,\;3,\;4,\;6-penta-O-galloyl-{\beta}-D-glucose$ (5), orcinol (6) and $orcinol-{\beta}-D-glucoside$ (7). Among these compounds, scopolin, $orcinol-{\beta}-D-glucoside$ were isolated from this plant for the first time.

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해당화 지하부에서 분리한 탄닌 화합물 (A Tannin Compound Isolated from the Underground Part of Rosa rugosa Thunb)

  • 박종철;양한석;이승호
    • 생약학회지
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    • 제24권4호
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    • pp.319-321
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    • 1993
  • A tannin compound has been isolated from the underground part of Rosa rugosa Thunb. and its structure has been established to be methyl gallate $3-O-{\beta}-D-(6'-O-galloyl)-glucopyranoside(1)$ on the basis of chemical and spectroscopic evidences. This compound was the first example in this plant.

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A Triterpenoid Glucoside and Phenolic Compounds from Rosa davurica

  • Park, Jong-Cheol;Hwang, Young-Hee;Choi, Da-Rae;Jung, Deuk-Young;Park, Ju-Gwon;Hur, Jong-Moon;Kim, Seong-Ja;Kim, Suk-Nam;Kim, Moon-Sung
    • Natural Product Sciences
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    • 제9권1호
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    • pp.31-33
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    • 2003
  • A triterpenoid glucoside and five phenolic compounds have been isolated from the roots and leaves of Rosa davurica. They were elucidated as rosamultin and gallic acid from the roots, and methyl gallate, gallic acid, protocatechuic acid, quercetin and hyperoside from the leaves of this plant, respectively.

대극 지상부의 페놀성 화합물 (Phenolic Compounds of Aerial Parts of Euphorbia pekinensis)

  • 안병태;;이상철;김재길;노재섭;이경순
    • 약학회지
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    • 제40권2호
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    • pp.170-176
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    • 1996
  • A chemical examination of the aerial parts of Euphorbia pekinensis $R_{UPRECHT}$. (Euphorbiaceae) has led to the isolation of seven hydrolyzable tannins and ten fl avonoid glycosides. The former ones have been identified as gallic acid, methylgallate, 3-O-galloyl shikimic acid, 1,3,4,6-tetra-O-galloyl-${\beta}-_D$-glucose, 1,2,3,4,6-penta-O-galloyl-${\beta}-_D$-glucose, corilagin, geraniin and the latter ones as isoquercitrin, quercitrin, astragalin, afzelin, prunin, rutin, kaempferol-3-O-rutinoside, quercetin-3-O-(2"-O-galloyl)-${\beta}-_D$-glucoside and quercetin-3-O-(2"-O-galloyl)-${\alpha}-_L$-rhamnoside on the basis of chemical and spectroscopic evidence.

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유색 농산물 중 안토시아닌과 폴리페놀 함량 비교 연구 (A Comparative Study on Anthocyanin and Polyphenol Contents in Colored Agricultural Products)

  • 정일형;오문석;전종섭;김한택;홍세라;박광희;윤미혜
    • 한국식품위생안전성학회지
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    • 제32권5호
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    • pp.371-380
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    • 2017
  • 본 연구에서는 인터넷 쇼핑몰에서 유통되는 컬러푸드 중 블랙푸드 76건을 대상으로 폴리페놀 17종 및 안토시아닌 5종을 동일한 전처리 방법으로 HPLC, HPLC-MS/MS 분석하여 정량 및 정성시험을 실시하였다. 분석대상 폴리페놀은 gallic acid, protocatechuic acid, chlorogenic acid, vanillic acid, caffeic acid, syringic acid, p-coumaric acid, t-ferulic acid, t-cinnamic acid 등 9종의 phenolic acid와 (+)catechin, syringic aldehyde, rutin, epicatechin gallate, naringin, luteolin, naringenin, kaempferol 등 8종의 flavonoid로 총 17종의 폴리페놀을 동시분석 하였고, 안토시아닌은 delphinidin-3-glucoside, delphinidin-3-rutinoside, cyanidin-3-galactoside, cyanidin-3-glucoside, cyanidin-3-arabinoside 등 5종을 동시분석 하였다. 폴리페놀 17종의 총 함량은 서리태 $255.1{\pm}7.5{\mu}g/g$, 서목태 $275.8{\pm}5.3{\mu}g/g$, 흑미 $78.5{\pm}4.6{\mu}g/g$, 흑임자 $75.8{\pm}3.2{\mu}g/g$, 블루베리 $143.3{\pm}5.5{\mu}g/g$, 아로니아 $195.2{\pm}4.9{\mu}g/g$, 블랙커런트 $131.6{\pm}3.2{\mu}g/g$로 나타나 서목태 > 서리태 > 아로니아 > 블루베리 > 블랙커런트 > 흑미 > 흑임자 순으로 높은 함량을 나타냈다. 안토시아닌 5종의 총 함량은 서리태 $82.4{\pm}17.2{\mu}g/g$, 서목태 $95.2{\pm}6.1{\mu}g/g$, 흑미 $74.1{\pm}9.7{\mu}g/g$, 흑임자 불검출, 블루베리 $110.8{\pm}1.9{\mu}g/g$, 아로니아 $218.9{\pm}6.1{\mu}g/g$, 블랙커런트 $209.7{\pm}4.0{\mu}g/g$로 나타나 아로니아 > 블랙커런트 > 블루베리 > 서목태 > 서리태 > 흑미 순으로 높은 함량을 나타났다. 본 실험결과 폴리페놀은 서목태, 안토시아닌은 아로니아가 가장 높은 함량을 나타내었으며 향후 유색 농산물을 활용한 기능식품 개발이 필요한 것으로 판단된다.

작두콩의 메탄올 추출물로부터 항산화 활성 화합물의 분리 및 동정 (Isolation and Identification of Antioxidants from Methanol Extract of Sword Bean (Canavalia gladiata))

  • 김종필;이향희;문제학;하동룡;김은선;김진환;서계원
    • 한국식품과학회지
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    • 제45권6호
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    • pp.777-784
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    • 2013
  • 본 연구는 항산화 활성이 뛰어난 작두콩의 메탄올 추출물을 대상으로 극성차를 이용한 용매분획을 행하여 n-hexane층, $CHCl_3$층, EtOAc층, butanol층, 그리고 $H_2O$층을 얻었다. 그중 활성이 가장 높은 EtOAc층을 대상으로 silica gel column chromatography 및 HPLC를 행하여 4종의 활성 화합물을 분리하고, MS 및 NMR분석을 통하여 구조해석을 행하였다. 그 결과 화합물 1-4는 methyl 3,4,5-trihydroxybenzoate (methyl gallate, 화합물 1), 3,4,5-trihydroxybenzoic acid (gallic acid, 화합물 2), 1,6-di-O-galloyl ${\beta}$-$\small{D}$-glucopyranoside (화합물 3), 그리고 1,4,6-tri-O-galloyl ${\beta}$-$\small{D}$-glucopyranoside (화합물 4)로 각각 동정되었다. 그리고 분리 화합물들의 DPPH radical-scavenging 활성은 화합물 4>화합물 3>화합물 2>화합물 1 순으로 평가되었다. 또 분리된 양을 기준으로 하였을 때, 화합물 1과 2는 작두콩 중에 다른 화합물들에 비해 다량으로 존재해있을 것으로 시사되었으며, 이들 화합물이 작두콩의 항산화 활성에 상당부분 기여하고 있는 것으로 판단되었다. 또한 화합물 4는 본 연구를 통해 작두콩으로부터는 처음 분리 동정되었다.

Deastringent Peel Extracts of Persimmon (Diospyros kaki Thunb. cv. Cheongdo-Bansi) Protect Neuronal PC-12 and SH-SY5Y Cells against Oxidative Stress

  • Jeong, Da-Wool;Cho, Chi Heung;Lee, Jong Suk;Lee, Seung Hwan;Kim, Taewan;Kim, Dae-Ok
    • Journal of Microbiology and Biotechnology
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    • 제28권7호
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    • pp.1094-1104
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    • 2018
  • The peel of astringent persimmon (Diospyros kaki Thunb. cv. Cheongdo-Bansi) is a by-product of dried persimmon (gotgam). We investigated if deastringent peel extracts of persimmon cv. Cheongdo-Bansi had antioxidative and neuroprotective properties. Two different extracts were prepared: thermally and nonthermally treated persimmon peel extracts (TPE and NTPE, respectively). Both TPE and NTPE were fractionated sequentially in n-hexane, chloroform, ethyl acetate, n-butanol, and water. The TPE and NTPE ethyl acetate fractions had the highest total phenolic and flavonoid contents as well as antioxidant capacities among all the fractions. Pretreatment of neuronal PC-12 and SH-SY5Y cells with the TPE and NTPE ethyl acetate fractions increased cell viability after exposure to oxidative stress. The ethyl acetate fraction of TPE attenuated oxidative stress inside both PC-12 and SH-SY5Y cells more effectively than that of NTPE. Furthermore, the TPE and NTPE ethyl acetate fractions inhibited acetylcholinesterase and butyrylcholinesterase. Analysis of ultra-high-performance liquid chromatography-electrospray ionization-tandem mass spectrometry results revealed gallic acid, kaempferol, kaempferol-3-O-galactoside, kaempferol-3-O-glucoside, quercetin, quercetin3-O-galactoside, quercetin-3-O-galactoside-2'-O-gallate, and quercetin-3-O-glucoside as the major phenolics of the TPE and NTPE ethyl acetate fractions. Taken together, these results suggest that the ethyl acetate fraction of deastringent persimmon peel is rich in antioxidants and has potential as a functional food to reduce oxidative stress.