Inhibitors of Aquatic Hyphomycetes in Dead Conifer Needles
作者:
BärlocherFelix,
OertliJ. J.,
期刊:
Mycologia
(Taylor Available online 1978)
卷期:
Volume 70,
issue 5
页码: 964-974
ISSN:0027-5514
年代: 1978
DOI:10.1080/00275514.1978.12020313
出版商: Taylor&Francis
数据来源: Taylor
摘要:
SUMMARYNeedle powders ofPinns leucodermisandSequoia giganteawere extracted with petroleum ether, ethanol, methanol, or distilled water. After evaporating the solvents, extracts, and extracted powder were added to nutrient medium to examine their effect on linear expansion of five aquatic Hyphomycetes. All extracts depressed fungal growth, the inhibition being strongest with the two alcoholic extracts. The FeC13test indicated phenolic compounds in the alcohol and water but not in the petroleum-ether extracts. There was no correlation between the colorimetrically determined phenol content of an extract and its antifungal activity. Untreated needle powder strongly inhibited fungal growth, as did petroleum- ether or water-extracted powder. By contrast, alcohol-extracted powder did not inhibit fungal growth. The inhibitory effect of methanol extract was much more pronounced at apH range of 4.0-4.5 than at 5.5-6.5.
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