Concerning to browning index, it could be observed that browning index was lowered as increasing the level of Ca lactate. Salts of calcium have been tested as anti-browning agents, studied the effect of calcium salts on susceptibility to browning of avocados. proposed the use of minimally processed apples ‘‘Fuji’’ in a treatment with 1% CaCl2 for 16 days storage at 8–10 _C.
Ca lactate pretreatments proved to be effective for increasing the retention of anthocyanin and ascorbic acid in thawed berries. The retention of ascorbic acid increased by 32.6– 72.1% in Ca lactate alone treatments and by 41.1–88.4% in Ca lactate – cooling combination treatments while anthocyanin retention increased by 8.8–25.3% and 11.5–33.5% in both Ca lactate and Ca lactate – cooling combination treatments respectively such results may indicate that the firming effect is accompanied by improved water holding capacity due to a more cross linked pectin network; thus, less juice is released during thawing of frozen berries. Furthermore, prefreezing calcium application maintains cell turgor, membrane integrity, and tissue firmness thus extending storage life. These results are in line with those reported from studies carried out with strawberries dipped in solutions of calcium salts and maintained either at 18 _C or in cold room storage.