The food environment is continuously sensed for oxygen content, temperature, pathogens and indicators
are used for proper alarming. They also show the shelf life of the products with the help of the nanosensors.
Some examples include gold nano particle incorporated enzymes for microbes detection, gas sensing related
to condition of food products : nanofibrils of perylene-based fluorophores indicates fish and meat spoilage by
detecting gaseous amines. Others include zinc oxide and titanium oxide nanocomposites for the detection of volatile organic compounds. Nanobarcodes are used for tagging and also for security [10]. Thus the use of
smart sensors is beneficial to the consumers in terms of better quality identification and producers for rapid
distribution and authentication of the food products.