From a food quality perspective, considering the ever growing emphasis
on food monitoring, this application is intended to serve as a valuable
guide for the monitoring of edible oils/shortening. It should be noted
that in the U.S., per label claims, only some of the vegetable shortenings
reported any amount of phenolic antioxidant. None of the edible oils
that were found in stores reported any phenolic antioxidants. However,
although only edible vegetable shortening was tested for this study,
the provided sample preparation procedure and chromatographic
application easily lend themselves to the analysis of edible oils as well.