• Title/Summary/Keyword: Chloroform fraction

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Screening of Antimicrobial Activity of the Dandelion (Taraxacum platycarpum) Extract (민들레(Taraxacum platycarpum) 추출물의 항균성검색)

  • 김건희;전희정;한영실
    • Korean journal of food and cookery science
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    • v.14 no.1
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    • pp.114-118
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    • 1998
  • In ordo. to develop the natural food preservative agent, freeze dried dandelion (Taraxcum platycarpum) was extracted with several solvents, and antimicrobial activity was investigated. The methanol extract obtained from the dandelion exhibited antimicrobial properties against five strains such as Bacillus subtilis, Escherichia coli, Staphylococcus aureus, Listeria monocytogenes, and Vibrio parahaemolyticus. The methanol extract at the concentration of 2000 $\mu\textrm{g}$/ml completely inhibited the growth of B. subtilis, E. coli, L. monocytogenes and V. parahaemolyticus. Antimicrobial activity of the ethylacetate fraction from the methanol extract of dandelion was the strongest fraction compare to those the other solvent fractions such as n-hexane, chloroform, n-butanol and water. The ethylacetate fraction showed the inhibitory effect at the concentration of 0.5 mg/disc on the growth of the food spoilage microorganisms.

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Anti-inflammatory Activities of Torilis japonica Fruit (사상자의 항염증작용)

  • Kim, Sang-Mee;Kim, Tae-Hee;Lee, Eun-Bang
    • Korean Journal of Pharmacognosy
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    • v.29 no.4
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    • pp.384-390
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    • 1998
  • The methanol extract of Torilis Fructus showed potent anti-edematous effect in carrageenan-induced paw edema in rats. Systematic fractionation of the extract with hexane, chloroform, ethyl acetate and butanol resulted in potent anti-edematous action only in hexane fraction at an oral dose of 237 mg/kg which is corresponding to 4.8 g of raw Fructus. This hexane fraction showed inhibitory effects at 77 mg/kg p.o on vascular permeability in mice, at 8mg/pouch on leucocyte emigration in rats, and at 120 mg/kg p.o. on adjuvant arthritis model in rats. These results demonstrate that hexane fraction of the extract possesses potent anti-inflammatory effect which may support its traditional uses.

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Inhibitory Effects of Actinidia chinensis and Zizyphus jujube on Histamine Release from Rat Peritoneal Mast Cells

  • Yang, Su-Ok;Ji, Geun-Eog
    • Preventive Nutrition and Food Science
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    • v.11 no.2
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    • pp.89-93
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    • 2006
  • Methanol extracts (80%, $10{\mu}g/mL$) of Actinidia chinensis (AC) and Zizyphus jujube(ZJ) inhibited histamine release from rat peritoneal mast cells (RPMCs) induced by compound 48/80. Evaluation of AC and ZJ solvent fractions (chloroform, ethylacetate, butanol and water) revealed that the butanol fraction of AC at $5{\mu}g/mL$ and water fraction of ZJ at $1{\mu}g/mL$ exhibited the highest anti-allergic effects. Combination of the butanol fraction of AC and water fraction of ZJ when combined showed higher inhibition of histamine release than either alone. The levels of cAMP in RPMCs treated with AC and ZJ were significantly increased compared to the compound 48/80 treated control. Our findings suggest that the extracts from AC and ZJ may alleviate immediate hypersensitivity reactions through the increase of cAMP in the mast cells.

Antioxidant Activities of Bamboo (Sasa Borealis) Leaf Extract according to Extraction Solvent (추출용매에 따른 조릿대 잎 추출물의 항산화활성)

  • Park, Yeon-Ok;Lim, Hyeon-Sook
    • Journal of the Korean Society of Food Science and Nutrition
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    • v.38 no.12
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    • pp.1640-1648
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    • 2009
  • This study was carried out to investigate the antioxidant activity of bamboo (Sasa borealis) leaf extract by measuring electron donating ability, superoxide dismutase (SOD)-like activity, reducing power, and lipid peroxidation inhibitory activity. Two crude extracts by water or 70% EtOH and five fractions of n-hexane, chloroform, ethyl acetate, n-butanol, and aqueous from the crude extract of 70% EtOH were prepared for this study. The crude extracts of water and 70% EtOH yielded 8.5% and 11.4%, respectively and the yields of n-hexane, chloroform, ethyl acetate, n-butanol, and aqueous fractions were 5.1% to 0.6%. Total polyphenol contents of the water and the 70% EtOH crude extracts were not significantly different; however, their total flavonoid contents were significantly greater in the 70% EtOH than in the water crude extract. Total polyphenol contents were the highest in chloroform fraction followed by ethyl acetate and n-butanol fractions and total flavonoid contents were the highest in ethyl acetate fraction followed by chloroform and n-hexane fractions. The two crude extracts as well as the five fractions showed election donating ability, SOD-like ability, reducing power, and lipid peroxidation inhibitory activity. Most of the antioxidant activities of each crude extract or fractions increased proportionally with the concentration. These results indicate that bamboo (Sasa borealis) leaf extracts show antioxidant activities due to its substantial content of polyphenol including flavonoid. Thus, it could be concluded that crude extracts by water or 70% EtOH and the fractions from the 70% EtOH extract, especially chloroform, ethyl acetate and n-butanol, would be useful as natural antioxidant substances.

Functional Chemical Components and Their Biological Activities of Houttuynia cordata and Lespedeza cuneata (어성초와 야관문의 기능성 성분 분석과 항산화, 항고혈압, 및 항당뇨 활성)

  • Park, Seong Ik;Sohn, Ho-Yong;Lee, Chang Il;Hwang, Hee Young;Park, Seung Woo;Kim, Jong-Sik
    • Journal of Life Science
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    • v.30 no.2
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    • pp.169-177
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    • 2020
  • For this study, we prepared organic solvent fractions from methanol extracts of Houttuynia cordata and Lespedeza cuneate, and analyzed their chemical components and various biological functions such as anti-oxidation, angiotensin-converting enzyme (ACE) inhibition, and α-glucosidase inhibitory activities. We found that DPPH radical scavenging activity was highest in the ethyl acetate fractions of Houttuynia cordata (90.8%) and Lespedeza cuneata (91.2%), whereas ABTS radical scavenging activity was highest in the ethyl acetate fractions of Houttuynia cordata (86.1%) and the chloroform fractions of Lespedeza cuneata (95.6%). FRAP activity was highest in the ethyl acetate fraction of Houttuynia cordata (360.1 mg TE/g) and Lespedeza cuneata (239.2 mg TE/g). ACE inhibitory activity was highest in the chloroform fraction of Houttuynia cordata (13.2%) and Lespedeza cuneata (35.2%). And, α-glucosidase inhibitory activity was highest in the ethyl acetate fraction of Houttuynia cordata (56.3%), and the water residue of Lespedeza cuneata (93.6%). Finally, we investigated the DPPH radical scavenging activity of 20 types of pure compounds identified in Houttuynia cordata and Lespedeza cuneate. The results show that quercetin demonstrates the highest DPPH radical scavenging activity. Overall, these results help us to understand the functional chemical components of Houttuynia cordata and Lespedeza cuneate and the biological effects of these components.

The Antimicrobial Activity of Medicinal Plants Extracts against Helicobacter Pylori (약용식물 추출물의 Helicobacter pylori에 대한 항균활성)

  • Lee, Jeong-Jun;Kim, Sung-Hoon;Chang, Byung-Sik;Lee, Joong-Bok;Huh, Chul-Sung;Kim, Tae-Jong;Baek, Young-Jin
    • Korean Journal of Food Science and Technology
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    • v.31 no.3
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    • pp.764-770
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    • 1999
  • Antimicrobial activities were assayed through the hot-water extracts from 41 species of medicinal plants against Helicobacter pylori which is known as the ulcerogenic phathogen. Opuntia ficus-indica, Houttuynia cordata, Sinomenium acutum, and Coptis japonica showed the MIC at the concentrations less than 100 ppm, Pulsatilla koreana, Forsythia koreana, Rheum undulatum, and Perilla frutescens less than 200 ppm, Belamcanda chinensis, Arctium lappa, Cassia tora, Citrus tachibana, Siegesbeckia orientalis, and Caesalpinia sappan less than 300 ppm by the 2-fold dilution method. In disc method only three of them were confirmed to have antimicrobial activities which were increased in the order Perilla frutescens, Coptis japonica, Caesalpinia sappan. Three extracts were partitioned with chloroform, ethyl acetate and butanol in sequence and examined for the activity to inhibit H. pylori. The major ativities were observed in ethyl acetate fraction of Caesalpinia sappan, butanol fraction of Perilla frutescens, butanol and chloroform fraction of Coptis japonica. The partitioned fractions were found to have increased antimicrobial activities in all extracts. The experiments in which the extracts were added into urea R broth containing the crude urease derived from H. pylori resulted in the increase of pH and optical density at 560 nm to 8.15 and 1.7 respectively. Urease activity of H. pylori was inhibited over 80% by Caesalpinia sappan, Perilla frutescens, and Coptis japonica, of which Caesalpinia sappan suppressed up to 95%.

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Antimutagenic and Antioxidative Effects of Methanol Extract of Pine Pollen (송화 메탄올 추출물의 항산화적 항돌연변이 효과)

  • 박정섭;안병용;최동성
    • The Korean Journal of Food And Nutrition
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    • v.16 no.4
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    • pp.303-309
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    • 2003
  • This study was performed to investigate the antimutagenic and antioxidative activities of pine pollen with respect to the microbial mutation induced by various mutagens such as 1-NP, daunomycin, 2-NF, MNNG, NaN$_3$, 4NQO, 4-NOPD, AFB$_1$, Trp-P-1, 2-AF and oxidative mutagens such as t-BOOH, H$_2$O$_2$. Pine pollen, originally extracted with hexane, was reextracted with 70% methanol. The results obtained using the methanol extract, in terms of the antimutagenicity observed in relation to ten kinds of mutagens, showed that it exhibited 17.8, 82.2 and 80.9% inhibitory effects against daunomycin, AFB$_1$, and Trp-P-1, respectively, in Salmonella. typhimurium TA98 and a 72.3% inhibitory effect against AFB$_1$in S. tyPhimurium TA100. In terms of the antimutagenicity exhibited in relation to t-BOOH, a 72.3% inhibitory effect was observed, but no antimutagenicity was observed in relation to the other mutagens and strains. The methanol extract was further fractionated by chloroform, ethyl acetate, n-butanol. In S. typhimurium TA98, the chloroform(150 $\mu\textrm{g}$/plate) fraction showed strong antimutagenic effects of 55.6%, 93.7% and 93.5%, while the ethyl acetate(100 $\mu\textrm{g}$/plate) fraction showed 11.4%, 74.3% and 85.2% in relation to the mutagenicity induced by daunomycin, AFB$_1$and Trp-P-1, respectively. In S. typhimurium TA100, the chloroform and ethyl acetate fractions showed antimutagenic effects of 95.1% and 62.5%, respectively, on the mutagenicity induced by AFB$_1$. In S. typhimurium TA102, the chloroform fraction showed an antimutagenic effect of 93.6% on the mutagenicity induced by t-BOOH.

Antifungal Activity of the Quercus Mongolica Extracts Against Botrytis cinerea (신갈나무로부터 유래된 추출물의 Botrytis cinerea 균주에 대한 항균활성)

  • Yeo, Hee Dong;Lee, Hyung Chul;Lim, Bu Kug;Kim, Hee Kyu;Choi, Myung Suk;Yang, Jae-Kyung
    • Journal of the Korean Wood Science and Technology
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    • v.36 no.1
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    • pp.88-101
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    • 2008
  • The aim of this study was to attempt the efficacy of antifungal activity of the wood extracts against Botrytis grey mold. Wood chip derived from Quercus mongolica was obtain from steam explosion process and extracted by hot water and methanol and ethanol. The conidial germination was maximum growth with the application temperature for 20 and $25^{\circ}C$. In pH test, we observed the maximum growth in pH 5.0 and 7.0. Antifungal activity was the best in the hot water extractives against Botrytis cinerea. The separation of the antifungal substances was performed using a silica-gel column (n-hexane : chloroform : ethyl acetate : formic acid = 12 : 17 : 8 : 0.2, v/v/v/v), TLC and UV-Spectrophotometer, and isolated 6 fraction group. The result of antifungal activity in 6 fraction group, fraction group I and fraction group II were the highest antifungal activity against grey mold with the present study. Three peaks in fraction group I and II were detected by HPLC and this compounds were suppose to effective of antifungal activity.

Antimicrobial Effect of the Extracts of Cactus Chounnyouncho(Opuntia humifusa) against Food Borne Pathogens (병원성 식중독 미생물에 대한 천년초 선인장 추출물의 항균 활성)

  • Lee, Kyung-Seok;Kim, Min-Gue;Lee, Ki-Young
    • Journal of the Korean Society of Food Science and Nutrition
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    • v.33 no.8
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    • pp.1268-1272
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    • 2004
  • The 70% ethanol extract from cactus Chounnyouncho (Opuntia humifusa) was fractionated subsequently by hexan, chloroform, ethyl acetate, buthanol and water. The ethyl acetate fraction exhibited strong antimicrobial activities by paper disk diffusion method on the five strains of food born bacteria Bacillus subtilis, Staphylococcus aureus subsp. aureus, Escherichia coli, Salmonella typhimurium and Pseudomonas fluorescens. It has a heat resistance to show inhibitory effect after heat treatment at 11$0^{\circ}C$ for 1 hr. The ethyl acetate fraction showed almost perfect growth inhibition at over 700 ppm on the tested strains.