in
terms of Hunter L* value (lightness, ranging 0–100 indicating black to
white), a* value (+a* value indicates redness and−a* value indicates
greenness) and b* value (+b* value indicates yellowness and −b*
value indicates blueness) (Camire, Chaovanalikit, Dougherty, & Briggs,
2002). The samples were ground and passed through a 40 micron
sieve prior to analysis.