Flavor detection for milk quality assessment using embedded electronic noses

A milk of good quality should have a pleasantly sweet and sanitary flavor with similar after taste. One of the most significant quality parameter is the flavor that determines the suitability of milk. The milk is generally transported longer distances to the urban population around large metropolitan centers. Due to increase of population density, the farms sited close to the cities tend to increase their scale of operations. The flavor un-stability in the milk changes the quality of the milk. In many cases the most common flavor defect of milk is feed flavor. It is hard to assess the milk flavor with human nose system. So it is necessary to develop the nostril system to determine the quality of milk based on the odor and flavor. It was done with the development of the embedded artificial electronic olfactory device called electronic nose and is processed and classified using microcontroller. With the help of this Embedded Electronic Noses (EEN) system, it can be easily determine the suitability of milk for consumption. The different flavors have different voltage values (such that different concentrations of gasses in the milk). This method provides a fast, simple, non-expensive and non-destructive method of milk quality assessment and classification. The gases like LPG, Butane, ammonia, ethanol propane were considered here.