Distribution of oil or other diethyl ether extractable material in various fractions of peanuts infected with selected fungi

Percentage oil or other diethyl ether soluble material was determined in lyophilized ground whole seeds and in buffer (sodium phosphate; pH 7.9, I ‐0.01) soluble and insoluble extracts of high quality “Florunner” peanuts, (Arachia hypogaea L.) not inoculated or inoculated withAspergillus parasiticus, Aspergillus oryzae, Rhizopus oligosporus, orNeurospora sitophila and held for various time intervals to 18 days. During the test period, percentage ether extractable material increased in buffer soluble fractions of peanuts infected with these fungi and decreased in insoluble preparations. The trends of these quantitative changes at various test intervals were similar for seeds infected withA. parasiticus andR. oligosporus. Likewise, percentages were similar for seeds infected withN. sitophila andA. oryzae. The percentage ether soluble material in whole seeds infected with these fungi either decreased slightly or did not change during the test periods. Data suggest that techniques developed to separate oil and protein fractions from high quality peanuts using aqueous extraction processes may not be suitable for isolating these components from molded or partially decomposed seeds.