II. CHEMISTRY 149 



TABLE II 

 Occurrence of the Provitamins D in Plants and Animals" 



Q Provitamin D, parts per 



^°^^^^ thousand of total sterol 



Phanerogams 



Cottonseed oil 28* 



Rye grass 15 



Scopolia root 14 



Spinach 10 



Wheat germ oil 10* 



Cocksfoot grass 8 



Horse chestnut 8 



Rutabaga 2.8 



Carrot 1.7 



Bean 1.0 



Cabbage 0.5 



Cryptogams 



Mold, Aspergillus niger =1000 



Mushroom, Cortinellus shiitake =1000 



Ergot, Claviceps purpurea 900 



Yeast, Saccharomyces cerevisise 800* 



Mold, Penicillium puherulum 280 



Alga, seaweed, Fucus vesiculosus 0.8 



Vertebrates 



Skin, pig 46* 



Skin, chicken feet 25* 



Skin, rat 19* 



Skin, wild pig 16 



Skin, mouse 9 



Skin, calf 7 



Skin, human adult 4.2 



Skin, human infant 1.5 



Skin, cow 1.8 



Skin, deer 1.6 



Skin, eel ^ 1.2 



Skin, chicken trunk 0.06* 



Liver, tuna, Japanese 11 



Liver, cod, Atlantic 4.4 



Liver, shark 1.0 



Liver, tuna 1.0 



Liver, pig 1.0 



Liver, cod, Japanese 0.90 



Liver, halibut 0.60* 



Liver, tuna, bluefin 0.40 



Liver, whale 0.12 



Brain, rabbit 0.70 



Brain, lumpfish 0.50 



Brain, human fetus 0.50* 



