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Fungicidal activity and chemical constitution IX *
Author(s) -
BYRDE R. J. W.,
CLIFFORD D. R.,
WOODCOCK D.
Publication year - 1961
Publication title -
annals of applied biology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.677
H-Index - 80
eISSN - 1744-7348
pISSN - 0003-4746
DOI - 10.1111/j.1744-7348.1961.tb03609.x
Subject(s) - mycelium , aspergillus niger , biology , oxalic acid , fungicide , active carbon , fungus , botany , nuclear chemistry , food science , biochemistry , chemistry , environmental protection , environmental science
SUMMARY Maximum fungistatic activity in a series of 6‐ n ‐alkyloxines, tested against the mycelium of Aspergillus niger , was shown at a chain length of 6–7 carbon atoms. 6‐ n ‐Hexyloxine was more active than the corresponding 5‐ n ‐hexyl compound, the ED 50 value being approximately half. In the presence of Cu 2+ , maximum activity was found with oxine and 6‐methyloxine; with some higher members of the series a rapid initial growth rate fell sharply after 2 days. This growth inhibition was shown to be due to the production of oxalic acid by the fungus, which resulted in the liberation of the free oxine.