• 제목/요약/키워드: Natural plant products

검색결과 626건 처리시간 0.029초

Screening of Fungicides and Natural Plant Products and Their Efficacy on Control of Aspergillosis in Silkworm, Bombyx mori L.

  • Singh, G.P.;Sharma, S.D.;Selvakumar, T.;Nataraju, B.;Datta, R.K.
    • International Journal of Industrial Entomology and Biomaterials
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    • 제4권1호
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    • pp.5-11
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    • 2002
  • Seven fungicides viz., salcylic acid, bacistin (Carbandazim 50% WP), bayleton (Triadimefon 25% WP), Dithane M-45 (Mancozeb 75% WP), captan (Captaf 50% WP) formaldehyde and benzoic acid at three concentrations (0.50,0.75 and 1.0%) and ten plant products viz., Hena leaf, garlic bulb, tomato leaf, mango bark, cotton leaf, turmeric powder, onion, tulsi leaf, neem leaf and ginger at 1.0,2.0 and 3.0% concentrations were screened against Aspergillus flavus and A. tamarii in vitro. Among fungicides, salcylic acid and bavistin and among plants Hena and Mango bark powder were found to be very effective at all concentrations tested. Based on in vitro screening, only selected six fungicides at 1.0, 1.5 and 2.(0% and six plants at 2.0,4.0 and 6.0% concentrations were tested in vivo for controlling Aspergillosis in silkworm. Salcylic acid and bavistin fungicides and Hena leaf powder and Mango bark powder have shown considerable effect in controlling Aspergillus infection in silkworm at all concentrations tested.

Comparison of essential oil composition between Angelica gigas and Angelica acutiloba

  • Park, C.H.;Juliani, H.R.;Park, H.W.;Yu, H.S.;Simon, J.E.
    • Plant Resources
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    • 제6권3호
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    • pp.183-187
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    • 2003
  • Two kinds of Angelica belong to Umbelliferae collected, the one is Angelica gigas that is inhabitant in Korea and the other is Angelica acutiloba that is indigenous in Japan at the field of Snyder Research and Extension Farm Rutgers University, New Jersey and was analyszed by GC and GC/MS. The composition of the essential oil of the different aerial parts of the Angelica has been studied. The oil yields obtained upon hydrodistillation were 0.18% (v/w) in Korean Angelica and 0.44% (v/w) in Japanese Angelica on dry root weight basis. By the growing stage in the Rutgers greenhouse condition, leaf and root of essential oil content a little decreased on 9 months later than 4 months later except for Angelica gigas leaf. Both of Angelica showed that amounts of essential oil content presented in order of leaf > petiole > root according to different plant part. The analysis of the essential oil from Angelica root led to the identification of 14 constituents totaling 64% in Korean Angelica and 13 constituents totaling 68% in Japanese Angelica. The major constituents of the Angelica root essential oil were ligustilide (47 %) and gamma terpi (14 %) in Korean Angelica, and alpha pinei (32 %) and nonane (25 %) in Japanese Angelica

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천연식물자원 활용 코로나19 억제 치료제 개발 (Development of Drug Candidates based on Natural Products Against COVID-19)

  • 강세찬
    • 한국자원식물학회:학술대회논문집
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    • 한국자원식물학회 2021년도 춘계학술대회
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    • pp.3-3
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    • 2021
  • The ongoing global pandemic caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) has not only influenced over 1.26 billion people but also caused 2.77 million deaths worldwide (as of March 28, 2021). The vaccination could be the most efficient strategy to prevent SARS-CoV-2 infection. However, the continuous emergence of novel variants such as VUI-202012/01 (United Kingdom) and 501.V2 (South Africa) raises huge concerns about the effectiveness of the vaccine designed to target the original virus strain. Since ancient times regardless of the East and West, the plants which refered in this presentation have been consumed not only as food but also as a natural medicine to treat diverse diseases including infectious diseases. Importantly, these plants contain secondary metabolites that display antiviral activity involved in the inhibition of viral adsorption, penetration, and replication. Also, plant-derived natural medicines are expected to have a wider range of efficacy and fewer side effects than synthetic medicine, discovering novel plant-based viral agents would be a promising strategy to fight against SARS-CoV-2.

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Antitumor and antioxidant activities of Bryonia laciniosa against Ehrlich's Ascites Carcinoma bearing Swiss albino mice

  • Sivakumar, T;Kumar, R Sambath;Perumal, P;Vamsi, MLM;Sivakumar, P;Kanagasabai, R;Baskaran, MV;Karki, Subhas S;Mazumder, UK;Gupta, M
    • Advances in Traditional Medicine
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    • 제5권4호
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    • pp.322-330
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    • 2005
  • The plant Bryonia laciniosa (Family: Cucurbitaceae) has been indicated for the treatment of various diseases one among which is cancer. The purpose of this study was investigating experimentally the possible anti-tumor effect and antioxidant role of Bryonia laciniosa leaves in animal model. The methanol extract of Bryonia laciniosa (MEBL) administered at the doses of 62.5, 125 and 250 mg/kg in mice for 14 days after 24 h of tumor inoculation. The effect of MEBL on the growth of transplantable murine tumor, life span of EAC bearing mice, hematological profile and liver biochemical parameters (lipid peroxidation, antioxidant enzymes) were estimated. Treatment with MEBL decreased the tumor volume and viable cell count thereby increasing the life span of EAC bearing mice and brought back the hematological parameter more or less normal level. The effect of MEBL also decreases the levels of lipid peroxidation and increased the levels of glutathione (GSH), superoxide dismutase (SOD) and catalase (CAT). The present work indicates that the methanol extract of Bryonia laciniosa exhibited significant antitumor and antioxidant activity in vivo.

Some properties of Cucumber mosaic virus and a potfvirus isolated from Freesia

  • Lim, H.R.;Shin, E.G.;Ahn, H.I.;Ryu, K.H.
    • 한국식물병리학회:학술대회논문집
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    • 한국식물병리학회 2003년도 정기총회 및 추계학술발표회
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    • pp.147.1-147
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    • 2003
  • Freesia, a member of the Iridaceae family, has fragant, tubular shaped flowers and is very popular ornamental plants in the world. Diseased freesia plants showing systemic leaf streak mosaic symptoms were collected from a cultivated farm in Kyonggi province, Korea in 2003, and its causal agents were investigated. Two viruses, Cucumber mosaic virus (Fr-CMV) and a potyvirus, were identified from the leaf tissues of the diseased freesia based on sequence analysis and host range tests. CMV-Fr could infect systemically on Chenopodium quinoa, C. amaranticolor, N. glutinosa, and N. benthamiana, and this biological property is distinguishable from ordinary strains of CMV. A filamentous potyvirus-shaped virus could not infect general indicator plants by mechanical inoculation. Single RT-PCR products was successfully amplified with a set of degenerate primers specific to the Potyvirus genus and total nucleic acids from the infected tissues, and was cloned into the pGEMT-Easy vector. Nucleotide sequences confirmed it belongs to the Potyvirus genus with either a new species or an isolate of Freesia mosaic virus (no information is available for the FrMV). This is the first report of FrMV in Korea and more characterizations of the two viruses are in progress.

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Acetonylidene americanin A, An artefact isolated from phytolacca americana

  • Woo, Won-Sick;Kang, Sam-Sik;Otto-Seligmann;Wagner, Hildebert
    • Archives of Pharmacal Research
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    • 제5권1호
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    • pp.1-5
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    • 1982
  • From the seeds of Phytolacca americana, acentonylidene americanin. A was isolated and its structure elucidated mainly by spectroscopic methods. This compound is not a genuine constituent but formed in the tissue on heating with acetone.

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한국산(韓國産) 엉겅퀴(Cirsium Pendulum $F_{ISCH}$)에서 Cirsimarin의 분리(分離) 및 확인(確認) (Separation and Identification of Cirsimarin from Cirsium Pendulum $F_{ISCH}$)

  • 윤혜숙;장일무
    • 생약학회지
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    • 제9권3호
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    • pp.145-147
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    • 1978
  • Whole plant of Cirsium Pendulum $F_{ISCH}$ was extracted with methanol and a flavonoid glycoside was isolated from the methanol extract. The glycoflavonoid was identified as cirsimarin, $4',5-dihydroxy-6,7-dimethoxyflavone-4'-{\beta}-D-glucopyranoside$.

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Antithrombotic activities of saponins from Ilex pubescens

  • Han, Yong-Nam;Baik, Soung-Kyung;Kim, Tae-Hee;Han, Byung-Hoon
    • Archives of Pharmacal Research
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    • 제10권2호
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    • pp.115-120
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    • 1987
  • Methanol extract of Ilex pubescens roots prolonged bleeding time threefold, and inhibited the generation of malondialdehyde released during platelet aggregation inducted by thrombin. Through several purification procedures, its saponin, named ilexoside, was proved to be responsible for the antithrombotic activities of the plant. Ilexosides A, -D and -J and 24-carboxypomolic acid showed strong inhibitory activities on platelet aggregation induced by thrombin.

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