The different freezing methods-air-blast, jet-impingement and
cryogenic freezing e had insignificant effects on the a* and
b* values, but significantly affected the L*, force, and drip loss
values. The L* and force values were most decreased by air-blast
freezing and least decreased by cryogenic freezing. The drip loss
value showed the opposite response. This could be explained by the
relationship between freezing rate and quality preservation. It is
well recognized that a higher freezing rate helps better preserve
frozen food quality (Sun & Li, 2003; Van Buggenhout et al., 2006). In
this investigation, the freezing rates by cryogenic, jet-impingement
and air-blast freezing were approximately 8, 7 and 5 C/min,
respectively. Therefore, the degrees of the color and texture (force
and drip loss) changes corresponded to these freezing rates. It was
observed that the L*, force and drip loss values of partially ripe
mango were less affected than those of ripe mango. This evid