Electronic Tongue (Taste Fingerprint Analysis) - Electronic Tongue

Definition of Electronic Tongue

Electronic tongue, also known as taste sensor or taste fingerprint analyzer, is a modern qualitative and quantitative analysis and detection instrument mainly composed of interactive sensitive sensor array, signal acquisition circuit, and pattern recognition based data processing method.

The basic principle of electronic tongue

Electronic Tongue is a modern qualitative and quantitative analysis and detection instrument mainly composed of an interactive sensitive sensor array, signal acquisition circuit, and pattern recognition based data processing method. The electronic tongue is based on a stable sensor array composed of inert metal electrodes, which is excited by the volt ampere electrochemical pulse technology to realize the original combination pulse relaxation spectrum idea. Then, through interactive induction analysis technology, the overall information of the measured object is obtained, and the overall characteristic evaluation of the product and the qualitative and quantitative detection and analysis of several components are quickly, real-time, and online realized.

The basic structure of electronic tongue

Sensor array:

• Non-specific sensor array
• Has a certain degree of specificity and interactive induction

Signal excitation acquisition system:

• Related to the design of sensor arrays
• Related to the properties of the tested object

Multivariate Mathematical Statistics System:

• Differential Analysis of Overall Quality Differences in Objects (PCA)
• Origin protection products and brand product authenticity identification (SIMCA, PLS-DA)
• Product Quality Rating (DFA)
• Rapid response of sensory attributes and physicochemical indicators of samples (PLS)
• Evaluation of Product Shelf Life (PCA, PLS)

Application fields of electronic tongue

• Detection of Basic Taste Substances: AcidSweetBitterSaltyDifferentiation and detection of five basic flavor substances and detection of various other flavors in fresh food
• foodAlcohol, beverages, tea, aquatic products, livestock products, poultry and egg products, edible oil, fruits and vegetables and their processed products, milk and dairy products, cooking foods, health foods
• pharmacyTraditional Chinese Medicine, Western Medicine, Preparations, and Decoction Pieces
• tobaccoTaste judgment of various types of tobacco
• Agricultural residuesTesting for pesticide residues in fruits and vegetables
• Rapid detection of pathogenic microorganismsMicrobial testing of aquatic and meat products

6 significant features of electronic tongue:

• fastThe sample does not require any pre-treatment and can be tested directly on site. The expected results can be obtained in 1-3 minutes. It has high sensitivity, rich information content, automatic cleaning and calibration function, simple and reliable operation, providing practical possibilities for intelligent processing.
• objectiveCan be used for objective digital detection and evaluation of sample basic flavors (sour, sweet, bitter, salty, fresh) and other single and compound flavors. It is possible to clearly distinguish different degrees of acidity, sweetness, bitterness, saltiness, and freshness between samples.
• stableBased on the selection and optimization of test objects, a specially designed inert precious metal sensor array is formed, which has high performance stability and repeatability. It is currently the most stable system in commodity electronic tongues, with a long lifespan of up to several years and does not require frequent replacement.
• widely: It is easy to detect corrosive samples or oil samples, such as Baijiu and edible oil.
• flexibleElectronic tongue is a type of universal broad-spectrum intelligent analytical instrument with great flexibility and scalability. It can be combined with specific user needs and sample data model libraries to define and expand its functions, and combined into specialized electronic tongue models suitable for different purposes and environments.
• convenientThe electronic tongue is easy to operate and is not affected by external static electricity interference (such as static electricity from the environment itself, operators, and other objects).