50 MASS. EXPERIMENT STATION BULLETIN 449 



Canned and Frozen Baked Mcintosh Apples. (W. B. Esselen, Jr., C. L. Ras- 

 mussen, and C. R. Fellers.) Canned and frozen baked Mcintosh apples prepared 

 without added calcium chloride were quite soft and mushy and did not retain 

 their shape. They retained a satisfactory degree of firmness when treated with 

 0.05 to 0.10 percent calcium chloride. In no instance did the calcium chloride 

 cause an oflf-flavor in the product. The characteristic Mcintosh flavor was well 

 retained in both the canned and frozen apples. From the standpoint of appear- 

 ance glazed apples were rated best, with vacuum-treated and core-filled apples 

 in a descending order of preference. Scoring completely cored apples about the 

 periphery, before baking or glazing, reduced the tendency of the skin to split. 

 Baldwin and Northern Spy apples retained their shape and texture very well 

 without added calcium. In fact, those treated with calcium were considered to 

 be too firm and rubbery. 



Prepared Fresh Mcintosh Apple Slices. (\V. B. Esselen, Jr., C. L. Rasmussen, 

 and N. Glazier.) In the preparation of fresh sliced apples for the bakery or con- 

 sumer trade there are several factors that must be overcome or controlled in 

 the production and distribution of a good quality product. The objectionable 

 browning or discoloration of the slices may be satisfactorily controlled by treat- 

 ment with sulfur dioxide or for short periods of time by means of a treatment 

 with an acid and salt solution. While the concentration of sulfur dioxide re- 

 quired to maintain color may vary somewhat depending upon the condition of 

 the apples, etc., a 10-minute dip in a solution containing 1500 p.p.m. has been 

 found to be satisfactory under our conditions. Apples treated in this manner 

 maintained a good quality for from one to two weeks when stored at room tem- 

 perature and for three weeks or longer when held at 35 °F. During storage for a 

 week or longer a considerable amount of liquid tended to leach out of the slices 

 and accumulate in the bottom of the container. 



Consumer Package (22 ounces) of Prepared Fresh Mcintosh Fie Apples. 



