منابع مشابه
Insecticidal activity of indanomycin.
More than half of the worldwide expenditure on agrochemicals was devoted to insecticides in an effort to combat over half a million different herbivorous insect species1}. Despite this, 15% of the crops planted are lost to feeding insects and other pests2). The cost of this damage and its effect on agriculture has increased the demand for more effective crop protection agents. For manyyears, pe...
متن کاملInsecticidal activity of Bacillus laterosporus.
The Bacillus laterosporus strains 921 and 615 were shown to have toxicity for larvae of the mosquitoes Aedes aegypti, Anopheles stephensi, and Culex pipiens. The larvicidal activity of B. laterosporus was associated with spores and crystalline inclusions. Purified B. laterosporus 615 crystals were highly toxic for Aedes aegypti and Anopheles stephensi.
متن کاملHigh Spore Count and Improved Insecticidal Activity
Batch and fed-batch cultivation of Bacillus thurillgiellsis var. kurstaki was carried out to achieve high cell and spore density with maximum insecticidal activity. Cell cultivation was done in fully equipped fermentors under controlled conditions at different feed rates. Increased cell mass, high spore counts and improved insecticidal activity were achieved with fed-batch cultivation system. W...
متن کاملcomparison of catalytic activity of heteropoly compounds in the synthesis of bis(indolyl)alkanes.
heteropoly acids (hpa) and their salts have advantages as catalysts which make them both economically and environmentally attractive, strong br?nsted acidity, exhibiting fast reversible multi-electron redox transformations under rather mild conditions, very high solubility in polar solvents, fairly high thermal stability in the solid states, and efficient oxidizing ability, so that they are imp...
15 صفحه اولInsecticidal activity of the essential oil of Ligusticum mutellina roots.
The essential oil obtained from roots of different collections of Ligusticum mutellina was tested against 3rd instar armyworms, Pseudaletia unipuncta (Lepidoptera: Noctuidae), for insecticidal activity. The main compounds were isolated and their structures were elucidated using 2D-NMR techniques. Our collections contained dillapiole, ligustilide and myristicin as major compounds. The previously...
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ژورنال
عنوان ژورنال: The Journal of Antibiotics
سال: 1997
ISSN: 0021-8820,1881-1469
DOI: 10.7164/antibiotics.50.617