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- W2371340975 abstract "The objective of this study is to separate and purify the herbicidal fractions produced by the mycelia of PAM1,an isolate of the pathogen Pythium aphanidermatum.The mycelia were extracted sequentially with ethyl acetate and methanol and then treated with ultrasonic,and the crude extracts were separated by using the methods of column chromatography and HPLC.The chemical structures of the compounds obtained were analyzed by using the techniques of mass spectra(MS),infrared spectrum(IR)and nuclear magnetic resonance(NMR).Compound 1and compound 2were obtained from the ethyl acetate and methanol extracts,respectively,which showed high bioactivity on Digitaria sanguinalis.The NMR spectrum of compound 1indicated that there were unsaturated bonds,hydroxyl group and carboxyl in its molecular,and the MS spectrum showed its molecular weight was 578,which in-dicated that the formula was C37H70O4.And the probable formula of compound 2was likely to be 453.The two compounds separated from the extracts of the mycelia of Pythium aphanidermatum were deduced to be a kind of fatty acids." @default.
- W2371340975 created "2016-06-24" @default.
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- W2371340975 date "2014-01-01" @default.
- W2371340975 modified "2023-09-23" @default.
- W2371340975 title "Separation and identification of herbicidal compounds produced by the mutated isolate PAM1 of Pythium aphanidermatum" @default.
- W2371340975 hasPublicationYear "2014" @default.
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