Spectrum recognition method for alcohol doped in laser-induced fluorescent red wine

Abstract

The invention relates to a spectrum recognition method for alcohol doped in laser-induced fluorescence red wine. The method comprises the following steps: (1) obtaining an original fluorescence spectrogram of a red wine sample by using a laser-induced fluorescence spectrometer; (2) performing attribute reduction on the original fluorescence spectrum data of the red wine sample by using a BP-REF algorithm; (3) dividing the spectral data of the red wine sample into a training set and a test set by adopting a bootstrapping method; (4) optimizing an initial weight W of a learning vector quantization neural network (LVQ) model by using a particle swarm optimization (PSO); and (5) taking the red wine spectral data on the test set as the input of the model so as to detect and identify different types of red wine. According to the method, the PSO is combined with the LVQ to be used for classification and recognition of laser-induced fluorescence red wine doped alcohol, the method has the advantages of being high in generalization capacity, classification accuracy and practical application value, and the method has great significance in real-time and accurate detection of red wine adulteration.

Description

technical field [0001] The invention relates to the field of food safety detection, in particular to a spectral recognition method for laser-induced fluorescent red wine doped with alcohol. Background technique [0002] Red wine is a fruit wine brewed from grapes through natural fermentation. Its main components are grape juice and alcohol converted from sugar fermentation. Among them, grape juice accounts for more than 80%. In addition to grape juice and alcohol, red wine also contains tartaric acid, pectin, minerals, tannic acid and other substances. There are more than 1,000 kinds of substances, and more than 300 kinds of substances that are beneficial to the human body. Red wine has a great effect on the health of the human body. It can increase appetite, has a nourishing effect on the human body, can also beautify the skin, resist aging, help digestion, and has the functions of weight loss, diuresis, and sterilization. Drinking red wine in moderation for a long time ca...

AI Technical Summary

Problems solved by technology

However, some unscrupulous traders adulterate red wine for high profits, which not only causes harm to people's health, but also greatly endangers the development of the formal red wine industry and disrupts the market order.

[0003] At present, the methods commonly used to detect whether red wine is adulterated mainly include nuclear magnetic resonance spectroscopy, ion chromatography, and high-performance liquid chromatography. Realize the detection of red wine

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