Method for identifying honey varieties based on attenuated total reflection terahertz dielectric spectrum

Abstract

The invention relates to the technical field of analysis and detection, in particular to a method for identifying honey varieties based on an attenuated total reflection terahertz dielectric spectrum. The method comprises the steps of at first conducting terahertz scanning on a honey sample of which variety is known and obtaining a terahertz time-domain spectrogram, then transforming the terahertz time-domain spectrogram into a terahertz frequency domain spectrogram through Fourier transformation, conducting calculation to obtain the terahertz dielectric spectrum of the honey sample of which variety is known and conducting principal component analysis according to the terahertz dielectric spectrum to establish a PCA-DA model of the honey sample of which type is known; finally adopting the same method to conduct detection on honey sample to be tested to obtain a terahertz dielectric spectrum, then conducting identification on the terahertz dielectric spectrum according to the PCA-DA model, and the variety identified by the PCA-DA model is the variety of the honey of which the variety is unknown. According to the method for identifying honey varieties based on the attenuated total reflection terahertz dielectric spectrum, only terahertz spectrum of the unknown honey needs to be collected, and then identification can be conducted through the model; meanwhile, the method for identifying honey varieties based on the attenuated total reflection terahertz dielectric spectrum has the characteristics and advantages that detection speed is high, operation is convenient, no chemical agent is polluted, both time and labor are saved, and accuracy is high.

Description

technical field

[0001] The invention relates to the technical field of analysis and detection, in particular to a method for identifying honey varieties based on attenuated total reflection terahertz dielectric spectrum. Background technique

[0002] The varieties of honey are usually divided according to the types of nectar source plants collected by bees. Honey from different plant sources not only has differences in sensory and intrinsic quality, but also has different nutritional effects and production scales, so the prices are also different. . Therefore, in order to seek more illegitimate economic benefits, many unscrupulous traders put low-priced honey on the market in the form of high-priced honey to deceive consumers and make huge profits.

[0003] There are many types of honey with complex components, and the chemical composition of honey varies greatly due to differences in bee species, nectar sources, and environments. Therefore, the identification and detection...

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