Arpassorn Sirijariyawat and Sanguansri Charoenrein

pp. 517 - 523

Abstract

One major problem with frozen fruits is a loss of texture. Therefore this study investigated the effects of the freezing
process on the freezing profiles, texture, and drip loss of apple, mango, cantaloupe, and pineapple fruit samples. All frozenthawed fruits varied in these three properties because of diversity in the fresh fruits. Mango had the highest total soluble
solids content and the lowest freezing point, whereas pineapple showed the highest freezing rate. The highest firmness and
crunchy texture were found in fresh apple, and these properties were absent in the other fresh fruits. The firmness of all
frozen fruits significantly decreased by different percentages as compared to those of the fresh fruits. The drip loss of each
fruit type was also significantly different with apple samples having the highest firmness decrease and drip loss. This study
shows that freezing characteristics and frozen fruit properties depend on type of fruit.