SANITARY CONTROL OF TOMATO-CANNING FACTORIES. 



23 



it has been suggested by some manufacturers that they might, at the 

 start, pass their stock over a mechanical grader to remove all the 

 small tomatoes before the peeling stock goes to the scalder. These 

 small tomatoes could then be put through the proper processes for 

 pulp making while the regular trimmings from the peeling tables 

 would be totally discarded. Figure 3 is a graphic representation of 

 such a system. Although this system appears reasonable and has 

 been tested out by a few firms, sufficient data are not yet available 

 to show its practicability as a commercial proposition. It is much 



simpler than the sys- 



tern shown in figure ( rnwrassj 



2 and yet provides 

 for the utilization of 

 a large part of the 

 sound portions usu- 

 ally lost in the trim- 

 mings. 



PROMPTNESS IN 



HANDLING 



STOCK. 



The attention of 

 manufacturers has 

 been called repeat- 

 edly to the impor- 

 tance of the prompt 

 handling of tomato 

 stock, especially of 

 the pulp after the 

 sorting, washing, 

 and pulping proc- 

 esses have been 

 started. One of the 

 greatest objections to 

 the old "gravity 

 system " is the de- 



Fig. 3.- 



-Diagram of system for the manufacture of tomato 

 pulp from small tomatoes. 



lay occasioned at a stage when conditions are most favorable for 

 rapid multiplication of the organisms. In this system stock that 

 otherwise might be satisfactory is held for a period of time under 

 conditions nearly ideal for rapid growth of organisms, especially 

 bacteria and yeasts. 



By the gravity method the stock before pulping usually is warmed 

 more or less, according to the fancy of the manufacturer. After pass- 



