Evaluation of Fourier transform-NIR spectroscopy for integrated external and internal quality assessment of Valencia oranges.

Highlights: [•] NIR methods for non-destructive composition analysis of oranges was investigated. [•] NIR with emission head gave best predictions of mass, colour index and vitamin C. [•] Using an integrating sphere gave best prediction of TSS. [•] NIR with emission head can evaluate external and internal characteristics. [ABSTRACT FROM AUTHOR]