Journal of the American Oil Chemists' Society
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Determination of sulfur contents of vegetable and marine oils by ion chromatography and indirect ultraviolet photometry of their combustion products
Journal of the American Oil Chemists' Society - Tập 65 - Trang 1526-1530 - 1988
A simple method for the determination of total sulfur content in vegetable and
marine oils is described. The method involves combustion of the oil sample in an
oxygen bomb to convert all forms of sulfur to sulfate ions with subsequent
determination of the sulfate by ion chromatography and indirect ultraviolet
detection. The ultraviolet system described is more sensitive than conductivity
detection...
The chemical composition of California olive oil
Journal of the American Oil Chemists' Society - Tập 2 - Trang 40-44 - 1925
Effect of fatty acid positional distribution and triacylglycerol composition on lipid by-products formation during heat treatment: II. Trans isomers
Journal of the American Oil Chemists' Society - Tập 75 - Trang 1073-1078 - 1998
This study examined the effect of the fatty acid positional distribution and of
the triacylglycerol (TG) composition on heat-induced trans isomerization of
linoleic and linolenic acids. For this, we synthesized diacid TG molecules that
were acylated only with linoleic acid (L) or with linolenic acid (Ln) along with
palmitic acid (P). The fatty acid of interest was positioned either in the
central ...
The use of the computer in serum lipid and lipoprotein analysis
Journal of the American Oil Chemists' Society - Tập 44 Số 1 - Trang 5-10 - 1967
AbstractThe usefulness of computers in data evaluation is generally recognized;
however, the problem of utilizing a computer in the most intelligent manner
deserves careful consideration.Several programs are described which aid in serum
lipid and lipoprotein analysis. Two programs requiring a minimum of manual
measurements have been developed to analyze gas‐liquid chromatograms. These
programs per...
Plasticizing effect of acetylated castor oil on castor oil-based, moisture-cured polyurethane film
Journal of the American Oil Chemists' Society - Tập 55 - Trang 653-656 - 1978
Moisture-cured polyurethane films have been prepared by reaction between toluene
diisocyanate and castor oil or derivatives such as castor oil diethanol amide,
castor oil monoglyceride, ethylene glycol monoricinoleate, and propylene glycol
monoricinoleate. Effect of acetylated castor oil as an internal plasticizer on
the resulting urethane films has been studied. Catalytic effect of 3-5%
triethano...
Comparison of performances of approved chemists handling commodity credit corporation-processor soybean analysis work during the seasons of 1944–45 and 1945–46
Journal of the American Oil Chemists' Society - Tập 24 - Trang 265-269 - 1947
Infrared anisotropy and structure of crystalline methyl stearate and methyl octadecyl sulfonate
Journal of the American Oil Chemists' Society - - 1966
AbstractInfrared spectra of highly oriented crystalline films of methyl stearate
and methyl 1‐octadecyl sulfonate have been obtained using polarized radiation
with the electric vector parallel and at 45Ŷ to crystallographic axes. The
anisotropy of methyl stearate is in good agreement with the known structure and
with vibrational assignments. The results obtained on the methyl ester of
octadecyl su...
A Novel Method for Monitoring the Transesterification Reaction of Oil in Biodiesel Production by Estimation of Glycerol
Journal of the American Oil Chemists' Society - Tập 87 Số 7 - Trang 747-754 - 2010
A quantitative method is reported for the estimation of glycerol during
transesterification of oil to form biodiesel. The reagent used to derivatize
glycerol was 9,9-dimethoxyfluorene. Glycerol is estimated by both UV–visible
spectrophotometric and high performance liquid chromatography methods. Using the
former method, detection limits of 0.05% w/w of glycerol in biodiesel was
established. Valida...
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