Comparison of reflectance, interactance and transmission modes of visible-near infrared spectroscopy for measuring internal properties of kiwifruit (Actinidia chinensis)
P. N. Schaare and D. G. Fraser
Postharvest Biology and Technology Vol: 20 Issue: 2 Pages: 175-184.
2000
บทคัดย่อ
Three modes of visible-near infrared spectroscopic measurement (reflectance, interactance and transmission) were compared for their ability to non-destructively estimate harvest soluble solids content (SSC), density and internal flesh colour of the yellow-fleshed kiwifruit Actinidia chinensis. Interactance mode spectra provided the most accurate estimates of SSC, density and flesh colour. SSC was predicted with a standard error of prediction (SEP) of ±0.80° Brix and with correlation coefficient R2 of 0.93. Whole-fruit densities were predicted with an SEP of ±3.6 kg m-3 and with an R2 of 0.74. Internal flesh hue angle was predicted with an SEP of ±1.6° and with an R2 of 0.82.