• Title, Summary, Keyword: salicylic acid

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Antimicrobial components from Galla Rhois (오배자의 항균 성분)

  • 부용출;전체옥
    • Journal of the Society of Cosmetic Scientists of Korea
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    • v.19 no.1
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    • pp.77-84
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    • 1993
  • Two acardic acids showing antimicrobial activity against Propionibacterium acnes ATCC 6919, were isolated from Galla Rhois. They were identified as 6-pentadec-8-enyl salicylic acid and 6-pentadecyl aslicylic acid on the base of spectroscopic evidence.

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Induction of a Salicylic Acid Glucosyltransferase, AtSGT1, Is an Early Disease Response in Arabidopsis thaliana

  • Song, Jong Tae
    • Molecules and Cells
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    • v.22 no.2
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    • pp.233-238
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    • 2006
  • Endogenous salicylic acid (SA) and its predominant conjugates, SA 2-O-${\beta}$-D-glucoside (SAG) and the glucose ester of SA (SGE), increase dramatically during plant defense responses. Here I report the isolation and characterization of an Arabidopsis thaliana UDP-glucose:SA glucosyltransferase1 (AtSGT1) gene using a tobacco SGT gene previously reported, whose product catalyzes the formation of both SAG and SGE. The recombinant AtSGT1 protein had significant activities with SA and benzoic acid, and synthesized SAG and SGE. Northern blot analysis showed that AtSGT1 was rapidly induced both by exogenous SA and infection with the bacterial pathogen Pseudomonas syringae, indicating that pathogen-inducible AtSGT1 expression is an early disease response and may be involved in the accumulation of glucosyl SA during pathogenesis.

The Complex Formation of Fe(III)-Salicylic acid (Fe(III)-Salicylic acid의 착물 형성에 관한 연구)

  • Cha, Ki-Won;Park, Kwang-Won
    • Analytical Science and Technology
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    • v.8 no.3
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    • pp.305-311
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    • 1995
  • The stability constant of the complex between salicylic acid($H_2A$) and Fe(III) ion has been determined using UV-Vis absorption spectrometry and pH titration method in O.1M $KNO_3$ aqueous solution at $20^{\circ}C$ and compared with reference value, $logK_f=16.48$. The $pK_{a1}$ and $pK_{a2}$ of $H_2A$ are $2.92{\pm}0.08$ and $12.90{\pm}0.13$, respectively and the $logK_f$ of 1:1 complex Fe(III)-$H_2A$ system is $11.88{\pm}0.12$ at $20^{\circ}C$.

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Screening and Identification of Natural Herbicidal Active Substance in Rye and Oat Extracts (호밀, 귀리 추출물로부터 제초활성물질 탐색 및 동정)

  • Yang, K.J.;Kim, K.H.;Chung, I.M.
    • Korean Journal of Weed Science
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    • v.18 no.4
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    • pp.348-355
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    • 1998
  • This study was conducted to identify allelopathic compounds in rye and oat straw extracts by HPLC analysis. These extracts were analyzed with 12 standard chemicals including salicylic acid. 11 chemicals in rye extract except for naringin and in oat extract except for catechin were identified. Salicylic acid(8.34mg/g) in rye straw extracts and naringin(7.50mg/g) in oat straw extracts among these standard chemicals were identified as the largest amount substance. The germination of Chenopodium ablum seeds was significantly inhibited by these chemicals at $10^{-3}$ and $10^{-4}M$ concentrations as compared to control. Salicylic acid in rye and naringin in oat were considered as the major allelopathic substances although allelopathy may be caused by an interaction of many substances. Yet many unidentified chemical compounds are present in both extracts.

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Spectral, Magnetic, and Thermal Properties of Some Thiazolylazo Complexes (Thiazolylazo 화합물의 분광학적, 자기적, 그리고 열적성질)

  • Masoud, M.S.;Mohamed, G.B.;Abdul-Razek Y.H.;Ali A.E.;Khairy F.N.
    • Journal of the Korean Chemical Society
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    • v.46 no.2
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    • pp.99-116
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    • 2002
  • The thiazolylazo compounds and their Co(II), Ni(II) and Cu(II) complexes of barbituric acid, uracil, thiouracil, citrazinic acid, chromotropic acid, gallic acid, pyrogallol and salicylic acid were pre-pared and characterized by $^1H$ NMR , IR and the effect of pH on the electronic absorption spectra . The mode of ionization, the electronic transitions and the dissociation constants were discussed. The stoichiometries of the complexes were of 1:1, 2:1 and 3:2 (M:L). The copper complexes are of isotropic ESR spectra (except that of gallic acid which showed a complicated one) and are of magnetically diluted behaviour with orbital con-tribution. Detailed DTA data were obtained and discussed.

Isolation and Characterization of the Salicylic Acid Induced Gene in Rehmannia glutinosa by Differential Display

  • Kim, Hee-Jong;Kim, Kwon-Jong;Lee, Youn-Su
    • Mycobiology
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    • v.30 no.2
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    • pp.88-92
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    • 2002
  • Rehmannia glutinosa is a perennial medicinal plant belonging to the family Scrophulariaceae with more than 300 species known in the world, especially in temperate regions. Its roots have been used widely in Korea for medicinal purposes. However, it is commonly infected by various pathogens during storage, causing great damage to the roots, and impedes the intensive farming of the crop. Therefore, an attempt has been made to isolate and screen a resistance gene against the pathogen Fusarium oxysporum using differential display. We treated salicylic acid(SA), and isolated a resistance gene that responds to SA. As a result, we found that SA was involved in plant defense mechanism in pathogenicity tests with SA treated and non-treted plants, and we isolated a partial PR-la gene through differential display polymerase chain reaction(DD-PCR) method.

Induction by Salicylic Acid and Characterization of PR-Proteinases from Bulbs of Lilium formosanum Wallace (흰나리 인편으로부터 PR-Proteinase의 유도 및 특성 규명)

  • 오순자
    • Korean Journal of Plant Resources
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    • v.11 no.2
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    • pp.195-201
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    • 1998
  • Some morphological character were surveyed and PR-proteinases were induced and characterized from Lilium formosanum Wallace endeimc to Cheju island . Its flower characters were similar to those of white trumpet lilies(Lilium longiflorum Thunb) although its flowering period was later than that of white trumpet lilies and it hadd a wide range of variation among individuals. Six PR-proteinases(II-2, III-1, III-2, IV-1, IV-2 and V) were induced from bulbs by 2.5mM salicylic acid and almost excreted into the intercellular spaces. These PR-proteinases were strongly activated by Ca 2+, , whereas they were strongly inhibited by Cu2+ Co2+ and Fe2+ . Three PR proteinases(II-2, IV-1 and IV-2) were strongly inhibited by 1, 10 -phenanthroline, indicating that these enzymes are metallo-proteinases. Three PR-proteinases(III-1, III-2 and V) had a high sensitivity to PMSF and required $\beta$-mercaptoethanol for their activities. These results indicate that these proteinases are cysteine proteinases.

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Analysis of Aromatic Acids in Panax Ginseng by Gas Chromatography (GC에 의한 인삼 중의 방향족 산성 성분 분석)

  • Park, Man-Ki;Park, Jeong-Hill;Kim, Kyoung-Ho;Han, Sang-Bum;Han, Byung-Hoon
    • YAKHAK HOEJI
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    • v.38 no.4
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    • pp.389-393
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    • 1994
  • Eight aromatic acids in Panax ginseng were determined by GC. Ultra-1 $(25\;m{\times}0.2\;mm{\times}0.33\;{\mu}M)$ capillary column was employed with temperature programming from $150^{\circ}C$ to $240^{\circ}C$ at a rate of $3^{\circ}C/min$. The mean contents of eight aromatic acids in 8 white ginseng samples were as follows; salicylic acid: 4.30 ppm, cinnamic acid: 18.2 ppm, vanillic acid: 4.22 ppm, gentisic acid: trace, syringic acid: 6.69 ppm, p-coumaric acid: 13.3 ppm, ferulic acid : 21.9 ppm, caffeic acid: 24.3 ppm, respectively.

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Dextran-5- (4-ethoxycarbonylphenylazo) salicylic Acid Ester as a Colon-Specific Prodrug of 5-Aminosalicylic Acid (5-아미노살리실산의 結腸標的性 프로드럭 : 덱스트란-5- (4-에톡시카르보닐페닐아조) 살리실산 에스테르)

  • Jung, Yun-Jin;Lee, Jeoung-Soo;Kim, Yun-Taek;Kim, Young-Mi;Kim, Dae-Duk;Han, Suk-Kyu
    • YAKHAK HOEJI
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    • v.42 no.1
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    • pp.31-38
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    • 1998
  • Dextran-5-(4-ethoxycarbonylphenylazo)salicylic acid ester(Dextran-5-ESA) was synthesized as a potential colon-specific prodrug of 5-aminosalicylic acid (5-ASA). No free 5-(4-eth oxycarbonylphenylazo) salicylic acid (5-ESA) was detected when the chemical stability of dextran-5-ESA was tested at pH 1.2, or pH 6.8 bath solution, Effects of the degree of substitution (DS) and molecular weight of dextran on the depolymerization by dextranase was investigated. Depolymerization(%) decreased with increasing DS, and was not affected by M.W. of dextran. The extent of prodrug conversion after incubation in the contents of various G.I. Tract segments of rats was evaluated. 5-ASA was released in the cecal contents, but not in the contents of proximal small intestine (PSI) or distal small intestine (DSI). No significant prodrug conversion was observed in the cecal contents of rats pretreated with kanamycin sulfate, which indicated that microbial enzymes were responsible for the cleavage of the prodrug.

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Application of Jasmonic Acid Followed by Salicylic Acid Inhibits Cucumber mosaic virus Replication

  • Luo, Ying;Shang, Jing;Zhao, Pingping;Xi, Dehui;Yuan, Shu;Lin, Honghui
    • The Plant Pathology Journal
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    • v.27 no.1
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    • pp.53-58
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    • 2011
  • Systemic acquired resistance is a form of inducible resistance that is triggered in systemic healthy tissues of local-infected plants. Several candidate signaling molecules emerged in the past two years, including the methylated derivatives of well-known defense hormones salicylic acid (SA) and jasmonic acid (JA). In our present study, the symptom on Cucumber mosaic virus (CMV) infected Arabidopsis leaves in 0.1 mM SA or 0.06 mM JA pre-treated plants was lighter (less reactive oxygen species accumulation and less oxidative damages) than that of the control group. JA followed by SA (JA${\rightarrow}$SA) had the highest inhibitory efficiency to CMV replication, higher than JA and SA simultaneous co-pretreatment (JA+SA), and higher than a JA or a SA single pretreatment. The crosstalk between the two hormones was further investigated at the transcriptional levels of pathogenesis-related genes. The time-course measurement showed JA might play a more important role in the interaction between JA and SA.