• Title/Summary/Keyword: biochemical

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Variation in Biochemical Composition among Indian Isolates of Sclerotinia scle-rotiorum

  • Basha S. Ameer;Sarma B.K.;Singh K.P.;Singh U.P.
    • Mycobiology
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    • v.34 no.3
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    • pp.114-119
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    • 2006
  • Biochemical variability among 20 Indian isolates of Sclerotinia sclerotiorum collected from different hosts/soil samples from different localities in India is reported. High Performance Liquid Chromatographic (HPLC) analysis of ethyl acetate fraction of culture filtrate, mycelia, sclerotia and sclerotial exudate showed $15{\sim}23$ peaks but only 11 could be identified. They were tannic, gallic, oxalic, caffeic, vanillic, ferulic, O-coumeric, chlorogenic, cinnamic, salicylic and gentisic acids. The amount of phenolic compounds varied among the culture filtrates, mycelia, sclerotia and sclerotial exudates of S. sclerotiorum.

Molecular and Morphological Characterization of a Taxol-Producing Endophytic Fungus, Gliocladium sp., from Taxus baccata

  • Sreekanth, D.;Sushim, G.K.;Syed, A.;Khan, B.M.;Ahmad, A.
    • Mycobiology
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    • v.39 no.3
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    • pp.151-157
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    • 2011
  • The endophytic fungal populations of different tissues of Taxus baccata grown at high altitudes in West Bengal, India were explored. These isolated fungal populations represented different genera, which were screened for taxol production using immunoassay technique. The culture AAT-TS-$4_1$ that produced taxol was identified as Gliocladium sp. based on its cultural, morphological characteristics, internal transcribed spacer, and 18S rRNA sequence analysis. Kinetics of taxol production as a function of culture growth were investigated.

Studies on the Physiological and Biochemical Effects of Korean Ginseng (고려인삼의 생리.생화학적 효과연구)

  • 정노팔;진승하
    • Journal of Ginseng Research
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    • v.20 no.4
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    • pp.431-471
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    • 1996
  • Korean ginseng has been thought and used the most very important medicinal herb among the oriental medicinal drugs for thounds of years Korean ginseng had many ingredients such as tripenoid saponins. Nitrogen compounds, polysaccharides, polyacetylenic compounds and lipid compounds. Korean ginseng has wide effects in the various systems of human such as nervous system. Vascular system. Digestive system. endocrine system, immune system. etc. Many researchess who were interested in the biological effects of Korean ginseng have concerned the tripenoid saponins among the components of ginseng and carried out to find the effects of ginseng using the various experimental system. From their results, it was unveiled many effects of Korean ginseng gractually in the experimental systems and shown that Korean ginseng has various effects in the biological system. But recent studies has been carried out to the difference ginseng components, besides ginseng saponin thought to have various effects in biological systems. Also the functional mechanism of ginseng in the biological system is limited but the basic research to elucidate the mysterious effects of ginseng has been preferred. In this review, we focus on biological effects of Korean ginseng. Especially physiological and biochemical aspects in biological systems.

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Non-Saponin Fraction from Panax ginseng C.A. Meyer Inhibits Platelet Aggregation (혈소판 응집반응을 억제시키는 Panax ginsing C.A. Meyer의 비사포닌 분획)

  • Park, Kyeong-Mee;Rhee, Man-Hee;Park, Hwa-Jin
    • Journal of Ginseng Research
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    • v.17 no.3
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    • pp.246-249
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    • 1993
  • Hexane, Hexane/diethylether and chloroform fractions from Panax ginseng C.A. Meyer stroungly inhibitied human platelet aggregation induced by a high dose of thrombin (2$\mu$/ml). Chloroform fraction more strongly inhibited the platelet aggregation than the other two fraction among them. There were fatty acid ester and phosphate ester instead of polyacethylene compounds in the chloroform fraction.

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Conducting and interface characterization of carbonate-type organic electrolytes containing EMImBF4 as an additive against activated carbon electrode

  • Kim, Mingyeong;Kim, Kyungmin;Kim, Seok
    • Carbon letters
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    • v.16 no.1
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    • pp.51-56
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    • 2015
  • Carbonate-type organic electrolytes were prepared using propylene carbonate (PC) and dimethyl carbonate (DMC) as a solvent, quaternary ammonium salts, and by adding different contents of 1-ethyl-3-methyl imidazolium tetrafluoroborate ($EMImBF_4$). Cyclic voltammetry and linear sweep voltammetry were performed to analyze conducting behaviors. The surface characterizations were analyzed by scanning electron microscopy method and X-ray photoelectron spectroscopy. From the experimental results, increasing the $EMImBF_4$ content increased the ionic conductivity and reduced bulk resistance and interfacial resistance. In particular, after adding 15 vol% $EMImBF_4$ in 0.2 M $SBPBF_4$ PC/DMC electrolyte, the organic electrolyte showed superior capacitance and interfacial resistance. However, when $EMImBF_4$ content exceeded 15 vol%, the capacitance was saturated and the voltage range decreased.

Classification of Pseudomonas solanacearum isolates from tobacco plants in Korea (우리나라 담배 세균성마름병균(입고병균 : Pseudomonas solanacearum)의 Race와 Biochemical Type)

  • Yi Young Keun;Kim Jeong Hwa;Kang Seo Kyu
    • Korean journal of applied entomology
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    • v.21 no.3 s.52
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    • pp.123-127
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    • 1982
  • Fourteen isolates of Pseudomonas solanarearum virulent to tobacco cultivars were selected among isolates obtained from tobacco plants shelving wilt symptoms throughout the country during $1980\~1981$. The fourteen isolates were classified into two races based on reactions in eggplant, tomato, red pepper, potato and tobacco, and also classified into biochemical type 1 and type 4 according to physiological characteristics.

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Biochemical characteristics and serotypes of Salmonella spp isolated from domestic animal in western Gyeongbuk province (경북서부지방 가축에서 분리된 Salmonella 속균의 생물화학적 특성 및 혈청형)

  • 김규태;김정화;우정희;장영술;김대원;김봉환
    • Korean Journal of Veterinary Service
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    • v.25 no.3
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    • pp.259-273
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    • 2002
  • The present study was conducted to investigate the prevalence, biochemical properties and serotypes of Salmonella organisms in the domestic animals in Western Gyeongbuk province during the period from January to December 2000. Salmonella spp were isolated from 51(1.62%) of 3,141 cases of domestic animals. Serotypes of isolates were S enteritidis 17(29.6% of isolates), S agona 11(20.3%), S rissen 8(14.8%), S gallinarum 4(7.4%), S derby 3(5.5%), S typhimurium 2(3.7%), S travis 1(1.8%), S montevideo 1(1.8%) and untypable 4(12.9%), in order. The majority of isolates were highly susceptible to amikacin, ampicillin, ciprofloxacin, cephalothin, chloramphenicol, trimethoprim-sulfamethoxazole, norfloxacin and gentamicin, whereas all isolates were resistant to bacitracin, erythromycin, tiamulin and tylosin, and the majority of them were highly resistant to penicillin, streptomycin and tetracycline.

Antibiotic Resistance and Biochemical properties of Pathogenic Echerichia coli Isolated from Piglets with Diarrhea in Kyongbuk Western Area (경북서부지역 설사자돈에서 분리한 Haemolyic E. coli의 생화학적 특성 및 약제 내성)

  • 조종숙;이정아;오강희;박영구
    • Korean Journal of Veterinary Service
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    • v.16 no.2
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    • pp.150-156
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    • 1993
  • The present study was conducted to investigate the biochemical characteristics and anti-biotic resistance of pathogenic Escherichia coli (E. coli) isolated from piglets with diarrhea in Kyongbuk Western Area during the period from February to November 1992. 55 E. coli strains were isolated from 97 piglets with diarrhea and the biochemical and cultural reaction were compared with the classification criteria of Edwards and Ewing. The majority of E. coli were susceptible to amikacln, enrofloxacin and gentamicin. 51 (92.7%) out of 55 drug resistance stains carried R factor (R+) which were transferable to the recipients by conjugation.

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HEPATO-AND RENAL TOXICITY OF AQUEOUS EXTRACT OF A MUSHROOM, AMANITA VOLVATA IN MICE

  • Chang, Il-Moo;Kazumasa Yokoyama;Yuji Ishihara;Morio Fukuara
    • Toxicological Research
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    • v.5 no.1
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    • pp.1-7
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    • 1989
  • Toxic effects of a mushroom, Amanita volvata, were studied in respect to biochemical and histological changes induced in the liver and kidneys of mice. The changes in biochemical parameters characteristically appeared 12 hrs after oral administration of an aqueous extract of the mushroom. The hepatic glycogen decreased markedly to 17% of the control level and a concemitant decrease in blood glucose was also observed. The activity of serum glutamic oxaloacetic transaminase (SGOT) was elevated by 2.5-fold and the level of blood urea nitrogen (BUN) increased by 3-fold, respectively, 12 hrs after administration of the mushroom, their levels being maintained up to 24 hrs.

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Ficus racemosa Affords Antihepatotoxic Activity Against Paracetamol-Induced Acute Liver Damage in Rats

  • Mandal, Subhash C.;Maity, Tapan K.;Das, J.;Saha, B.P.;Pal, M.
    • Natural Product Sciences
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    • v.4 no.3
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    • pp.174-179
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    • 1998
  • The effect of oral treatment with Ficus racemosa leaf extract (400 mg/kg for seven days) were studied on hepatic damage induced by paracetamol (750 mg/kg, i.p.) in rats. Biochemical parameter like SGOT, SGPT, serum bilirubin and alkaline phosphatase were estimated to assess liver function. These biochemical observations were supplemented by histopathological examination of liver sections. The activity of extract was also comparable to Neutrosec a known hepatoprotective formulation.

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