Millet origin traceability method based on mid-infrared spectrum technology and feature extraction

Abstract

The invention discloses a millet origin traceability method based on a mid-infrared spectrum technology and feature extraction, which comprises the following steps: step 1, respectively collecting infrared spectrums of millet samples from different origins, and carrying out pretreatment; step 2, firstly performing principal component analysis on the infrared spectrum data preprocessed in the step 1, then grouping variable data by utilizing a window analysis method, respectively establishing a classification model by adopting a support vector machine, then determining a group of variable data with small correlation by utilizing a hierarchical clustering analysis method, and constructing a millet producing area identification model; and step 3, collecting the infrared spectrum of a millet sample of an unknown production place, preprocessing, inputting into the millet production place identification model, and outputting to obtain the production place of the millet sample. According to the millet production place tracing method based on the mid-infrared spectrum technology and feature extraction, the production place of millet can be quickly judged.

Description

technical field [0001] The invention belongs to the technical field of food origin identification, and in particular relates to a millet origin tracing method based on mid-infrared spectrum technology and feature extraction. Background technique [0002] Millet is the husked seed of millet, also known as millet (rice), belonging to the genus Setaria in the Gramineae family. Millet is drought-tolerant and is widely planted in northern my country, accounting for 80% of the world's total output. Millet is rich in nutrients such as carbohydrates, fats and fatty acids, proteins and amino acids, vitamins and minerals. Its function can not only be used as a staple food, but also can be used to make wine and caramel. Aids in sleep". The quality of millet is closely related to its place of origin. There have been many millet product communities in famous and high-quality origin areas in China, such as: Golden Rice (Golden Millet) from Mamiao Town, Jinxiang County, Jining City, Shan...

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Problems solved by technology

However, the number of samples in this study was small, and the quality fluctuations between samples were not considered. The identification accuracy of this method for large samples is unknown.

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