Abstract
A collaborative study was conducted to examine the applicability of a sensory test to determine the life span of frying oil. Three types of food were deep-fried with or without a batter coating. Sensory tests on the frying oil and fried foods were carried out.
The usable life of the frying oil with a batter coating, which is defined as the frying time until the flavor score reached 3, was slightly longer than that for frying without a batter coating; the oil was less discolored and the scores for “viscosity” and “rancid flavor” were lower with the batter coating. These results suggest that the batter coating prevented the extraction of those components responsible for the color, viscosity and rancid flavor of the frying oil. Fried foods with a flavor score of 3or more were not considered acceptable for eating. It is suggested that frying food with a batter coating as well as without a batter coating is useful to to determine the life span of frying oil.
