• Title, Summary, Keyword: polyphenolic compound

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Antioxidative Activities and Contents of Polyphenolic Compound of Cudrania tricuspidata (꾸지뽕나무 (Cudrania tricuspidata)의 폴리페놀 화합물 함량과 항산화 활성)

  • 조영수;조영수;김현정;정정한
    • Journal of the Korean Society of Food Science and Nutrition
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    • v.28 no.6
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    • pp.1310-1315
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    • 1999
  • Polyphenolic compounds widely occurring in the traditional medicine plants have been reported to possess strong antioxidant activity. The antioxidative substances of water soluble extract from leaves, stem bark, root bark and fruit powder of Cudrania tricuspidata were tested in three different in vitro experimental models. In oxidation models using DPPH( , ' diphenyl picrylhydrazyl) method, Fe2+ induced linoleic acid peroxidation, and autooxidation of hepatic microsomal membranes, the antioxidative activities of water soluble extract from stem bark were strong than that from leaves and root bark. Fruits of Cudrania tricuspidata contained the highest amounts of polyphenolic compounds among the parts of this plant. The changes in polyphenolic compound contents of fruit powder caused by heat treatment (20oC, 40oC, and 60oC) were also monitored. After water blanching, contents of phenolic compounds was increased slightly in the following order; 20oC(1454mg), 40oC(1487mg), and 60oC(1511mg). These results supports that water soluble extracts from Cudrania tricuspidata contain antioxidative compounds.

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A New Antioxidant Polyphenolic Compound from Two Korean Brown Algae

  • Park, Soo-Hee;Kim, Eun-Sook;Choi, Byoung-Wook;Lee, Bong-Ho
    • Proceedings of the PSK Conference
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    • pp.261.2-262
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    • 2003
  • In the course of our researches for biologically active compound from Korean algae, purification of the methanolic extracts of two brown algae (Sagassum Sagamianum and Ishige Okamurae) collected off Jeju Island afforded an antioxidant polyphenolic compound (1). The molecular formular of 1 was established as C$\sub$24/H$\sub$16/ O$\sub$13/ on the basis of the FAB mass and $\^$13/C NMR spectrum. (omitted)

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Effect of Polyphenolic Compounds from Green Tea Leaves on Production of Hydroperoxide for Lipid Oxidation in Corn Oil-in-Water Emulsion (녹차 페놀류가 corn oil-in-water emulsion의 산화 중 hydroperoxide 생성에 미치는 영향)

  • Cho, Young-Je;Kim, Byung-Gyu;Chun, Sung-Sook
    • Korean Journal of Food Science and Technology
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    • v.36 no.1
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    • pp.19-24
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    • 2004
  • Effect of polyphenolic compounds from green tea leaves and surfactant micelles on lipid oxidation in corn oil-in-water emulsion (O/W) wag determined. Concentrations of polyphenolic compound and surfactant in continuous phase of O/W were measured. Particle size of O/W with 17 mM Brij 700 and 5% corn oil increased with increasing concentration of polyphenolic compound (100-200 ppm). Concentration of surfactant in the continuous phase was lower than that of control. Lipid oxidation rates, as determined by the formation of lipid hydroperoxides and headspace hexanal, in O/W emulsions containing polyphenolic compounds decreased with increasing concentration of polyphenolic compounds (100-200 ppm). Inhibition of hydroperoxide and headspace hexanal produced via lipid oxidation by polyphenolic compounds in O/W was BHT>procyanidin B3-3-O-gallate>(+)-gallocatechin >(+)-catechin.

Structural Study on an Permethyl Ether of a New Polyphenolic Compound Isolated from Panax ginseng (인삼으로부터 분리된 새로운 Polyphenal 성분의 Permethyl ether 의 구조에 관한 연구)

  • Wi, Jae-Jun;Park, Jong-Dae;Kim, Man-Uk
    • Journal of Ginseng Research
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    • v.14 no.1
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    • pp.27-29
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    • 1990
  • A Polyphenolic Compound was isolated from ethyl acetate fraction of Panax ginseng. And the chemical structure of its permethyl ether was suggested as 6-[2(3,4-dimethoxyphenyl)ethenyl]-5-(3,4-dimethoxyphenyl)2,8,10-trimethoxybenzo[a] xanthen-9-one by spectroscopic and chemical degradative evidences.

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Effect of Potato Polyuphenolics on the Hyperlipidemia in Rats (식이성 고지혈증에 미치는 감자 폴리페놀의 영향)

  • 조영수;차재영
    • Journal of the Korean Society of Food Science and Nutrition
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    • v.29 no.2
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    • pp.274-279
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    • 2000
  • Effect of potato polyphenolic compound on the concentrations of serum and liver lipids, serum glucose, and urine protein was investigated in Sprague Dawley rats by feeding a diet containing 0.5% of cholesterol for 2 weeks. Polyphenolic compound extracted from potato (Solanum tuberosum variety Dejima) was supplemented at a 0.5% level in the basal diet or the cholesterol diet. The supplementation of potato polyphenolic compounds decreased slightly the concentrations of total cholesterol and VLDL+LDL-cholesterol in serum, and atherosclerotic index in rats fed the cholesterol diet, while those measurements were not altered by the supplementation of potato polyphenolic compounds in rats fed the basal diet. In the rats fed the basal diet or the cholesterol diet containing potato polyphenolic compounds, urine protein increased by 12% and 27% at 1st week, respectively, but this change was not seen at 2nd week. The concentration of serum glucose, however, was not significantly different in the dietary groups.

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Antioxidative Activities of Fruit Extracts of Paulownia tomentosa Stued (참오동나무(Paulownia tomentosa Stud.) 열매 추출물의 항산화 활성)

  • 전방실;차재영;조영수
    • Korean Journal of Food Preservation
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    • v.8 no.2
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    • pp.231-238
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    • 2001
  • The concentrations of total polyohenolic compound from extract of Paulownia tomentosa Stued. were water-soluble extract 7.98%, methanol extract 12.30% and ethanol extract 11.63%. The free radical scavenger activities of three extracts at the levels of 0.5% were higher than that of BHT(butylated hydroxytoluene). In antioxidative activities measured the concentrations of TBARS(thiobabituric acid reactive substances) in tissues microsome induced with Fe$\^$++/ascorbate, the water-soluble extract was errdctively suppressed in liver and spleen. In antioxidative activities determined by thiocyanate method against lipid peroxidation using linoleic acid, the methanol extract showed the higher compared with other extracts, but BHT showed the highest antioxidative activity. These results suggest that fruit extracts of Paulownia tomentosa Stued. showed to have relatively high concentrations of polyphenolic compounds and antioxidative activities.

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Yield and Quality Characteristics of Ginseng's First Byproducts (인삼 1차 부산물의 생산량 및 기능성 성분 특성)

  • Kim, Gwan-Hou;Seong, Bong-Jae;Kim, Sun-Ick;Han, Seung-Ho;Kim, Hyun-Ho;Lee, Ka-Soon
    • Korean Journal of Medicinal Crop Science
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    • v.19 no.5
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    • pp.313-318
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    • 2011
  • This study was carried out to utilize the byproducts (flower, immature and mature berry, leaf and stem) of ginseng. Yield of byproducts were $32.7{\pm}9.8g$ in flower, $68.2{\pm}2.2g$ in immature berry, $48.5{\pm}4.3g$ in mature berry, $316.2{\pm}20.5g$ in leaf, and $296.6{\pm}15.4g$ in stem per $3.3m^2$ ($180{\times}90cm$, ginseng root $675.5{\pm}35.7g$/drybasis. The total saponin contents of ginseng byproducts and root are $52.36{\pm}1.24$, $68.71{\pm}1.98$, $168.89{\pm}0.57$, $68.26{\pm}1.32$, $7.85{\pm}0.61$ and $35.08{\pm}0.96$ mg/g, respectively. The main ginsenoside of all byproducts was Re and the highest content was $132.23{\pm}1.56$ mg/g in mature berry. But flower and berry was not detected Rf and Rh1, respectively. Total polyphenolic compound content on mature berry was the highest, $2.242{\pm}0.140%$, after, immature berry > leaf > flower > root > stem order. The DPPH radical scavenging activity on mature berry was the highest, $0.115{\pm}0.004$ mg/mL($IC_{50}$), and the others were the same order of polyphenolic compound and ginsenoside content on byproducts.

Analysis of Functional Components in Roasted Okra (Abelmoschus esculentus L. Moench) Seeds (볶음 오크라 종자의 주요 기능성분 분석)

  • Ahn, Yul Kyun;Jang, Ki Chang;Kim, Shun Hwan
    • Protected Horticulture and Plant Factory
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    • v.22 no.1
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    • pp.61-64
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    • 2013
  • This study was conducted to investigate the general characteristics of raw okra seeds and the functional components of roasted okra seeds. The number of okra seed per pod was 78 in 'Greensod' and 88 in 'Beny'. The weight of okra seed per pod of 'Greensod' and 'Beny' were 4.4 g and 6.3 g, respectively. Free amino acid contents of the stir-fry and fresh okra seeds were measured as $2.69mg{\cdot}g^{-1}$ and $0.31mg{\cdot}g^{-1}$. Total polyphenolic compound content of the stirfry okra seeds was estimated as $12.61mg\;CGA{\cdot}g^{-1}$, compared to $2.54mg\;CGA{\cdot}g^{-1}$ fresh okra seeds, Thus, free amino acid and total polyphenolic compound contents in the stir-fry okra seeds were higher than fresh one, Antioxidant activities, such as DPPH and ABTS radical scavenging in the stir-fry okra seeds was the higher than fresh okra seeds.

Polyphenolic Compound Content and Antioxidative Activities by Extracts from Seed, Sprout and Flower of Safflower( Carthamus tinctorius L.) (홍화(Carthamus tinctorius L.) 씨, 순 및 꽃잎 추출물의 폴리페놀 화합물 함량과 항상화 활성)

  • 김현정;전방실;김성규;차재영;조영수
    • Journal of the Korean Society of Food Science and Nutrition
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    • v.29 no.6
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    • pp.1127-1132
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    • 2000
  • 홍화(Carthamus tinctorius L.)의 씨. 순 및 꽃잎의 수용성 및 메탄올 추출물에 대하여 in vitro 실험계에서 항산화 활성을 비교 검토하였다. 성장기 흰쥐의 뇌 micro-some을 이용한 생테막 지질 과산화 억제정도는 꽃잎 수용성 추출물(97.19%)>순 메탄올 추출물(81.38%)>꽃잎 메탄올 추출물(64.99%)>씨 메탄올 추출물(64.95%) 순으로 나타났다. Limoleic acid 산화 실험계에서는 홍화씨 메탄올 추출물과 홍화씨 수용성 추출물에서 비교적 높은 항산화 활성을 보였다. DPPH 에 의한 수소공여능은 특히 순의 0.1% 메탄올 추출물에서 매우 높은 수소공여작용이 나타나 대조구인 BHT와 거의 비슷한 수준의 항산화 활성을 보였다. 이들 추출물의 폴리페놀 화합물 함량은 홍화 꽃잎 수용성 및 MeOH 추출물은 12.70% 및 8.05% 홍화씨 수용성 및 메탄올 추출물은 6.96% 및 12.34%, 홍화순 수용성 메탄올 추출물 및 메탄올 추출물이 8.75% 및 5.10%로 나타났다.

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Various Bioactivities of Two Polyphenolic Compounds from the Brown Alga Grateoupia elliptica

  • Kim, Eun-Sook;Kim, Chan-Sook;Lee, Bong-Ho;Choi, Byoung-Wook;Ryu, Geon-Seek
    • Proceedings of the PSK Conference
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    • pp.190.2-190
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    • 2003
  • In the course of search for various bioactive compounds from marine algae, we found strong antioxidant activity of the methanolic extract of the brown alga G. elliptica. Chromatographic purification [ODS flash, gel-filtration on Sephadex LH-20, HPLC] of the BuOH layer of the methanolic extract afforded two known polyphenolic compounds, 6,6'-bieckol (1) and dieckol (2). Compound 1 showed acetylcholinesterase (AChE) and butyrylcholinesterase (BuChE) inhibitory activities, free radical scavenging activity on DPPH (1,1-diphenyl-2-picryl-hydazyl) with IC$\_$50/ values of 91.2, 45.6 and 15.5 $\mu\textrm{g}$/$m\ell$, respectively. (omitted)

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