During fruit growth we observed a large increase in pulp a-carotene and b-carotene concentration in cv. Chanee. In this cultivar a further increase was found from the maturity stage to the ripe stage, in harvested fruit. Ripe cv. Chanee therefore had a much higher pulp a-carotene and b-carotene concentration than ripe cv. Monthong. Higher pulp carotenoid concentration in ripe fruit of the two cultivars studied was related to the deepness of the yellow color. This was reflected in the measured lower hue values and higher b⁄ values in cv. Chanee, compared to cv. Monthong. The data would agree with Khoo, Ismail, Mohd-Esa, and Idris (2008), who tested several fruit, noting that those with higher carotenoid concentrations
were more yellow.