The biological preparation of aflatoxins was accomplished by
culturing the mold Aspergillus flavus on various media. Aflatoxin
was isolated by chloroform extraction of the culture, and purified
by column fractionation and crystallization. Rice, wheat, soya bean,
peanut and YES media were found to give high yields of aflatoxin. It
was...
The variation in fatty acid composition between the "bound" and
"free" lipid in stored anchovy meal was determined using gas-liquid
chromatographic analysis. A model system of fresh anchovy oil on
powdered lactalbumin was also studied to determine the changes in
extractability and fatty acid composition which occur during oxidation.
All...
Malonaldehyde, a very reactive member of the homologous
series of dialdehydes, is associated with the autoxidative deterioration
of lipids. Its measurement, in autoxidized lipid systems is an
expression of the extent of oxidation, in lipids. Malonaldehyde lends
itself well to such determinations because of the sensitivity and
specificity of its...
Factors limiting effective extraction and purification of bean
yellow mosaic virus (BYMV) were investigated. Since the use of published
techniques for purifying BYMV resulted in low yields of partially
purified virus, an improved method for partial purification of this
virus was developed. The following treatments of infectious crude extract
decreased...
The lipid composition of swine is characteristic of the species
and is also a reflection of their dietary history. Other investigators
have established that the physical properties and composition of
swine depot fat may be altered by variation of the dietary lipid.
Dietary regimens employing vegetable oil-bearing materials and
their...