Electronic Tongue for Taste discrimination Shanghai Bosin Industrial Development Co.� Ltd.

1. What is the electronic tongue?

The electronic tongues simulate the human taste receptor mechanism� detect the sample information by sensor array� and analyze the overall quality of the sample with pattern recognition. Different from the chemical method� the output of the sensor detection is not the result of sample-composition analysis� but a signal pattern related to some characteristics of the sample� which can obtain the overall evaluation of the taste characteristics of the sample through the pattern recognition and analysis.

2. Shanghai Bosin C-tongue electronic tongue

A stable sensor array with 7 metal electrodes is mainly used in the C-tongue electronic tongue. The original idea of combined pulse relaxation spectrum is realized through voltammetry electrochemical pulse technology excitation. Through interactive induction analysis technology� the overall information of the measured object is obtained.

3. C-tongue application range

At present� electronic tongue has long been used in doing experiments and applied researches on the identification of true and false liquid food� such as wine� beverage� tea� etc.� product quality control and shelf life� rapid detection of pesticide residues� rapid detection of pathogenic microorganisms� etc.� and has shown obvious technical advantages and there have been a lot of application examples. As a new testing technology� it not only provides relevant research departments and testing departments as conventional scientific research instruments� but also provides rapid real-time means of on-site testing intelligent quality control for large-scale products.

C-tongue mainly used for:

Quality stability of brand industrial products and identification of true and false

Qualitative and semi-quantitative determination of certain trace components

Rapid qualitative and quantitative detection of pathogenic microorganisms

Measurement of correlation of taste sense attributes

Generalized multi-component rapid intelligent analysis

4. Specification

1. Sensor array composition: metal sensor� which can be used for lifelong.

2. Working electrode composition: platinum electrode� gold electrode� palladium electrode� titanium electrode� tungsten electrode� silver electrode.

3. Auxiliary electrode: platinum electrode.

4. Reference electrode: platinum electrode and Ag/AgCl electrode.

5. Signal acquisition: high-frequency relaxation pulse signal� from +1v to -1v� 0.2v/time.

6. Frequency of the pulse signal: 1Hz� 10Hz� 100Hz.

7. Time interval of the pulse signal: 0.001S.

8. Data magnification factor: up to 10⁶.

9. Signal excitation acquisition system: sampling rate�?span> 1kb/s.

10. Scanning sensitivity: 10^-6M.

11. Application scope: food� beverage� alcoholic products (including liquor)� condiments� etc. Samples can be directly tested without dilution.

12. Signal description: the signal collected is the overall response of the sample� rather than the results of the concentration of a specific component;

13. Hardware requirements: the sensor has stable performance� good reproducibility� long service life� rich detection information� 2-3min cleaning time of sensors� which lasts 2.6s at 0V� 2.6s at 1.2v� 2.6s at -1.2v� and improves the stability of detection.

14. Autosampler: graphical operation interface� easy to operate;

15. Supporting software functions: pattern recognition functions such as principal component analysis� linear discriminant analysis� grade and quality distinction;

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