Real-time nondestructive detection method for sugar content and acidity of peach
A non-destructive testing and sugar content technology, applied in neural learning methods, measuring devices, and material analysis through optical means, can solve the problem of limited sample sources, achieve low cost, fast speed, and no chemical reagents.
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[0027] Select two kinds of peaches with no damage on the surface and no pests and diseases: 30 peaches and nectarines as materials, and number each peach, 60 in total.
[0028] The collection of near-infrared spectral data adopts the method of diffuse reflectance, selects 20 points near the equatorial plane of each peach ring and avoids the side edges and corners and selects 20 points for spectral scanning, and the collected spectral range is 340-1021nm. 2047 points. The spectral data collected at the sampling points of each sample were used for subsequent data analysis.
[0029] The sugar content of each peach sample was detected by a handheld digital refractometer. First, clean the prism of the sugar meter with distilled water and wipe off the water, then calibrate and adjust to zero, then cut the peach whose spectrum has been measured with a clean knife and squeeze out the juice on the mirror surface of the refracting prism, and measure twice in a row , record and average...
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