AdministratorWhat is an electronic nose used for?
Electronic nose, as described by Gardner and Bartlett (1994) is “an instrument, which comprises an array of electronic chemical sensors with partial specificity and an appropriate pattern-recognition system, capable of recognizing simple or complex odors.” In the food industry, electronic nose is popularly used to …
What are the three major systems of the e-nose and their functions?
Electronic noses include three major parts: a sample delivery system, a detection system, a computing system. The sample delivery system enables the generation of the headspace (volatile compounds) of a sample, which is the fraction analyzed.
What are the different types of sensors used in e-nose?
Table 3.
| Sensor type | Sensitive material |
|---|---|
| Acoustic sensors: Quartz crystal microbalance (QMB); surface & bulk acoustic wave (SAW, BAW) | organic or inorganic film layers |
| Calorimetric; catalytic bead (CB) | pellistor |
| Catalytic field-effect sensors (MOSFET) | catalytic metals |
| Colorimetric sensors | organic dyes |
What are the benefits of using an electronic nose in the food industry?
The e-nose detects the smell more effectively then the human sense of smell. It also detects the hazardous or poisonous gas which is not possible to human sniffers.
Who invented electronic nose?
Jing Li, inventor of NASA’s E-Nose, or electronic nose, device inspects sensor array chips inside the device for COVID-19 detection.
What is another name for an artificial nose?
ARTIFICIAL-NOSE COMPONENTS. Artificial noses, sometimes called electronic noses (e-noses), can be described as having three main components: the vapor delivery system, the sensor array, and the pattern recognition algorithm (Figure 1). The vapor delivery system controls how the sample is delivered to the sensor array.
What are electronic noses and biosensors?
Electronic noses are bioinspired instruments that mimic the biological sense of smell. They are based on the use of gas sensors or biosensors combined with pattern recognition methods.
What is e-nose and E tongue?
An e-nose or an e-tongue is a group of gas sensors or chemical sensors that simulate human nose or human tongue. Both e-nose and e-tongue have shown great promise and utility in improving assessments of food quality characteristics compared with traditional detection methods.
How many sensors are in the nose?
They can have up to 40 sensors, each calibrated for a different chemical specificity, which, when combined provides a measurement pattern. The electronic nose relies on pattern recognition and therefore cannot identify unknown (or unexpected) compounds.