Electronic Noses Application to Food Analysis Using Metal Oxide Sensors: A Review

-Electronic noses employs different types of electronic gas sensors that have partial specificity and an appropriate pattern recognition techniques capable of recognizing simple and complex odors. This paper focuses on use of electronic noses that use metal oxide gas sensors. In this paper,we present the quality assessment applications to food and beverages, that includes determination of freshness and identification of spoilage, polluted, contaminated , unhygienic or adulteration in the food. The applications of electronic noses to a wide collection of food and beverages are considered, that consists of fruits, milk and dairy products, fresh vegetables, eggs, meat, fish, grains, alcoholic drinks and nonalcoholic drinks.