COMMEECIAL STOEAGE OF FRUITS AND VEGETABLES 



Table 1. — Approximate rate of evolution of heat ~by certain fresh fruits and 

 vegetables ichen stored at temperatures indicated 



Commodity 



Apples 



Bananas: 



Green 



Turning 



Ripe 



Beets 



Cantaloupe.-. 



Carrots.-. 



Celery 



Cherries (sour) 



Grapefruit 



Grapes (Cornichon and Flame Tokay) 



Lemons 



Lettuce 



Onions (Yellow Globe) 



Oranges 



Peaches 



Pears (Bartlett) 



Peppers 



Potatoes (Irish Cobbler) 



Raspberries 



Strawberries 



i British thermal units. The figures in this column were obtained (1) by assuming that the heat liberated 

 by respiration is produced by the respiration of a hexose sugar, and (2) by multiplying the milligrams of 

 carbon dioxide produced per hour by each kilogram of respiring material by the factor 220. 



2 Unpublished work on the respiration of vegetables by R. C. Wright and T. M. Whiteman. 



British ther- 



Tem- 



mal units of 



Litera- 



pera- 



heat per ton of 



ture 



ture 



fruits or vege- 



refer- 



(°F.) 



tables per 24 

 hours ' 



ences 



f 32 



660- 880 





40 



1,110- 1,760 



• (IS) 



1 60 



4, 400- 6, 600 



I 85 



6, 600-15. 400 





/ 54 



\ 68 



68 



3,300 





8,360 

 9,240 



(17) 



68 



8,360 





32 



1,166 





{ 40 



1,870 





60 



3,476 





32 



213 





{ 40 



506 





[ 60 

 ( 32 



3,938 

 814 



i (») 



\ 40 



1,408 





60 



3,808 





32 



704 





■ 40 



2,606 





60 



5,862 





32 



1,320- 1,760 





I 60 



11, 000-13, 200 



(7) 



32 



460 





40 



1,070 





60 



2,770 





80 



4,180 





35 



660- 1, 100 





\ 60 



2, 200- 2, 640 



• (7) 



80 



5, 500- 6, 600 





32 



580 





40 



810 





i 60 



2, 970 



(«; 



80 



6,200 





77 



2, 200- 3, 300 



(5) 



32 



638 





< 40 



7,392 





60 



22, 660 





32 



660- 1, 100 



( 8 ) 



< 50 



1,760- 1,980 





70 



3, 080- 4, 180 





32 



690- 900 





40 



1,400 





60 



2, 710- 2, 970 



(a) 



80 



8,000 





35 



1,540- 1,980 





60 



6, 600-13, 200 



■ (7) 



80 



15, 400-22, 000 





{ 32 



850- 1,370 





40 



1, 440- 2, 030 





60 



7, 260- 9, 310 





I 80 



17, 930-22, 460 





/ 32 

 I 60 



660- 880 





8, 800-13, 200 



kW 



( 32 



550 





\ 40 



1,518 





I 60 



3,322 





f 32 



440- 880 



1 ( 3 ) 



40 



1, 100- 1, 760 





1 50 



1,100- 1,540 





I 70 



2, 200- 3, 520 





f 35 

 \ 60 



4, 400- 6, 600 



} (7) 



15, 400-17, 600 



35 



3,300 



. 



60 



13, 200-15, 400 





32 



2, 730- 3, 800 





i 40 



5, 130- 6, 600 



> \o) 



60 



15, 640-19, 140 





l 80 



37, 220-46, 440 



J 



