Here various types of biosensors such as physicochemical, bioluminescent, electrochemical, opto-electric, piezoelectric, thermometric and magnetic has been deliberated to show their usefulness and applications in multiple field. Food industry requires suitable analytical methods for the safety and quality checking of foods. Chemical and biological hazards detection in foods is important to the human health. By on line measurement of different food components such as glucose, fructose, sucrose, lactose, lactic, malic, acetic, ascorbic, citric and amino acids, ethanol, glycerol, and triglyceride, polyphenols, oxygen, hydrogen peroxide, mycotoxin, vitamins, heavy metals, the food safety and microbiological quality aspects could be beneficial. Fluorescent biosensors have a large application in drug discovery and in cancer cell determination. Current and future researches may include a miniature array of biosensors, with rapid performance, high specificity, reproducibility and sensitivity. | The commercial application of biosensors as an analytical device
