THE EFFECTS OF STORAGE OX FRUITS 133 



The size of the package also has considerable to do 

 with the rapidity with which the fruit is cooled down, 

 and hence the attended chemical changes. Large pack- 

 ages like barrels of apples require from 24 to 72 hours 

 for the inside of the package to reach the same degree 

 as the outside. Where the fruit is wrapped in paper, 

 the insulating power of the paper tends to retard the 

 cooling down process. The smaller packages, therefore, 

 are usually preferred by fruit storage men and by fruit 

 growers for the best results in the keeping qualities of 

 fruit in cold storage. 



The different varieties and kinds of fruit are affected 

 in widely different ways in cold storage. In such fruits 

 as lemons the desirability of the fruit rests largely upon 

 the quantities of citric acid they contain. It is imper- 

 ative that no very great quantity of the starch be con- 

 verted into sugar. "With fruits like bananas, pineapples, 

 etc., the quality is improved materially by the increase 

 of the sugar content and, therefore, they are stored 

 in a higher temperature. Thus, every effort is put forth 

 to develop as large a sugar content as possible. With 

 apples, certain varieties keep well in storage while 

 others go down very quickly. It is needless to say that 

 it is seldom, if ever, desirable to cold store fall or sum- 

 mer varieties of apples. Those of standard grade and 

 quality are in all cases the most desirable. 



