Study on the Quantitative Assessment of Impact Damage of Yellow Peaches Using the Combined Hyperspectral Technology and Mechanical Parameters

The quantitative description of the impact damage yellow peaches is an essential basis for evaluating their quality and guiding postharvest handling. In this study, combined hyperspectral technology mechanical parameters method were used to quantitatively investigate peaches. Firstly, parameters, which are damaged area, absorbed energy, maximum contact force, stress peaches, obtained by device. statistical regression models between area established, results showed that energy force optimal characterize Then, raw spectra preprocessed three spectral pretreatment methods, standard normal variate (SNV), multiplicative scatter correction (MSC), SG smoothing, respectively, feature wavelengths selected competitive adaptive reweighted sampling (CARS), relationships successfully modeled based on partial least squares (PLSR). there a strong linear correlation data prediction performance SNV-CARS-PLSR model best, RP RMSEP it 0.920 86.452 mm2, 0.845 1.303 J, 0.943 49.666 N, 0.660 0.146 MPa, respectively. word, study shows can be assess guide handling fruits.