Method for discriminating shelf life of apple through near infrared spectroscopy based on JADE and ELM
A technology of near-infrared spectroscopy and shelf life, applied in the field of infrared non-destructive testing, can solve the problems of large sample base required for modeling, long training time, time-consuming and labor-consuming acquisition of physical and chemical values of samples, etc., to save manpower and material resources, and test quickly , the effect of improving the accuracy of the model
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[0023] Example
[0024] 1. Sample collection and spectrum collection
[0025] The test apples are Red Fuji apples, which are produced in Shandong Province, suitable for fresh food, but have a short shelf life and are easily damaged during storage and transportation. Choose 80 apples of medium size, similar colors and no pests, diseases and mechanical damage, and transport them to the laboratory for storage at room temperature (25°C, RH50%-60%) on the day of picking. Since the apple needs a balance process from the time of picking to room temperature, the composition changes greatly, and it is stored for two days for the first spectrum collection. After the completion of the spectrum collection, the samples were continued to be stored. Seven days later, the second spectrum collection was performed. As attached figure 2 As shown, the dotted line in the figure is the spectrum collected for the first time for a certain sample, and the solid line is the spectrum collected for the se...
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