F. Navarro et J. Costa, EVALUATION OF PAPRIKA PEPPER COLOR BY TRI ESTIMULUS COLORIMETRY, Revista espanola de ciencia y tecnologia de alimentos, 33(4), 1993, pp. 427-434
The colour of paprika pepper obtained from eight paprika cultivars dev
eloped by the Centro Regional de Investigaciones Agrarias (CRIA, Murci
a), four of them with chlorophyll retainers genes and differing in the
content. of red and yellow pigments, and also in their visual colours
, was evaluated by ASTA traditional method and by direct measurement o
f colour reflection. The cultivars with chlorophyll retainers genes, p
resented in the reflection spectra a relative minimum at 670 nm. Using
CIE Yxy and CIELAB systems, the cultivars with less yellow xantophill
es content and higher concentration in red pigment were markedly dista
nt from those with chlorophyll; this difference could be used to compl
ement the method of extraction to evaluate the colour of the paprika p
epper.