Chapter 13: Electronic Nose and Electronic Tongue Check Access

The study provides a comprehensive overview of electronic noses (E-noses) and electronic tongues (E-tongues), devices designed to mimic the human senses of smell and taste, respectively. These devices are increasingly crucial for quality control in various industries, including food processing, pharmaceuticals, and environmental monitoring. The E-nose uses an array of sensors to detect and differentiate complex odors, while the E-tongue employs sensors to analyze taste profiles. This chapter discusses the biological basis of the olfactory and gustatory systems, detailing how these sensory systems function and how their principles are applied in electronic counterparts. It outlines the methodologies for sampling and detecting volatile compounds, such as static headspace, trapping and purging, solid-phase microextraction (SPME), dynamic headspace sampling, and needle trap extraction. The applications of E-noses and E-tongues in food processing and packaging are highlighted, emphasizing their role in ensuring product quality and safety. The chapter also addresses the challenges and future trends in the development and application of these technologies, aiming to bridge the gap between machine olfaction and human sensory perception.