- 13 - 



During Vacuum-Cooling 



TEMPERATURES OF WET AND DRY STRAWBERRIES 



TEMPERATURE (°F.) 



$£**£ 



Dry strawberries 



\ I 



Wet strawberries 



^-VACUUM END 

 I I I I 



U. S. DEPARTMENT OF AGRICULTURE 



8 10 12 14 16 18 



TIME (MINUTES) 



NEC 3070-56 (2) AGRICULTURAL MARKETING SERVICE 



Figure 1 



During Vacuum-Cooling 



TEMPERATURE OF LETTUCE AND OF AIR 



TEMPERATURE(°F.) 



30 



Head lettuce 



.START ACTION 



_J L 



^BOOSTER 



■ II l 



(wet bulb) 



.. VACUUM END 



£j L_j i l 



2 4 6 8 10 12 14 16 18 



TIME (MINUTES) 



U S DEPARTMENT OF AGRICULTURE 



NEG 3071-56(2) AGRICULTURAL MARKETING SERVICE 



Figure 2 



