NIR spectroscopy has been a powerful tool for quality detection
and process control in the agricultural and food industries.
Numerous studies have been reported in recent years on NIR
spectroscopy for fast measurement of SSC and other quality
attributes of apple. In the study of Eisenstecken et al. (2015), an SSC
model was built within the range of 1000–2500 nm, and the SSC
prediction model showed inadequate coefficients of determina-
tion. Additionally, Peirs et al. (2001)