Fried foods, whether deep-fried, pan-fried or stir-fried are one
of the most popular culinary delights enjoyed by consumers
throughout the world (Gupta, 2004). In a typical institutional frying
operations, the oil is continuously and repeatedly used at elevated
temperature, often regularly replenished with fresh oil. The
high temperature, continuous exposure to oxygen, coupled with
the presence of water from the food result in a series of chemical
reactions with consequent degradation of the frying oil and food
components. At frying temperature, a large number of volatile
and nonvolatile compounds are formed. Not only do these compounds
adversely affect the stability of the frying oil, but the food
fried in deteriorated oils also acquires decomposition products that
may have adverse effects on food safety.