VITAMINS OF CRAiNBERRIES 



15 



indicate that losses do occur during <lrying and storage. I'ruits comparable to 

 cranberries in vitamin A content are apples, orange juice, and peaches (38). 



Complete protection 



Very slight xerophthalmia 

 in one rat 



Slight xerophthalmia — pus 

 in one rat 



Xerophthalmia — pus in 

 three rats 



Severe xerophthalmia and 

 copious pus 



Vitamin B (Bi) 



In the vitamin B investigations the method suggested by Sherman and Spohn 

 (3.S) and modified by Chase (7) was employed. Healthy young rats, 28 days old, 

 were placed in metal cages with raised wire-screen floors and fed a vitamin B-free 

 diet consisting of vitamin-free casein 18, salt mi.xture 4, butter fat 8, cod-liver oil 2, 

 autoclaved yeast 15, and starch 53 parts. The animals continued to gain for 

 about two weeks. When growth ceased, their diet was supplemented by dried 

 cranberry powder which was incorporated in the diet in definite proportion, re- 

 placing an equal weight of starch. Accurate records were kept of the weights of 

 the animals and the amount of food consumed. The data are presented in Table 7. 



Table 7. — Vitamin B (Bi) in Cranberries 



From these data, it is apparent that the material used contained no vitamin B. 

 Even when cranberry powder comprised 15 per cent of the diet, it did not benefit 

 the animals. Here, of course, even more than with vitamin A, losses might have 

 occurred during the drying. But if a significant amount of vitamin B had been 

 present in the raw cranberries, an amount of the dried material equivalent to 12 

 grams of fresh cranberries daily should have given at least some protection. 



Vitamin G (B2) 



Vitamin G assays were conducted according to the method developed by Bour- 

 quin (4). Normal young rats, 28 days old, were placed in metal cages with raised 

 wire-screen floors and fed the vitamin G-free diet consisting of purified casein 

 18, salt mixture 4, butter fat 8, cod-liver oil 2, and cornstarch 68 parts. The corn- 

 starch carried the alcoholic extract from 50 grams of whole wheat for each 100 grams 

 of diet. The animals were continued on this diet until they ceased growing. At 

 this time the diet was supplemented with dried cranberry which was incorporated 



