DIGESTIBILITY OF SOME BY-PRODUCT OILS. 



13 



Data of digestion experiments with pum 



pkin-seed oil in 



a simple mixed diet. 





Weight 

 of food. 



Constituents of foods. 



Experiment, subject, and diet. 



Water. 



Protein. 



Fat. 



Carbo- 

 hydrate. 



Ash. 



Experiment»No. 829, subject P. K.: 



Blancmange containing pumpkin-seed oil 



Grams. 



1,429.0 

 368.0 

 318.0 

 236.0 



Grams. 

 723.2 

 33.1 

 276.3 



Grams. 



25.1 



39.0 



2.6 



Grams. 



216.4 



5.5 



.6 



Grams. 



456.4 



284.5 



36.9 



236.0 



Grams. 

 7.9 

 6.9 



Fruit 



1.6 



















2,351.0 

 61.0 



1,032.6 



66.7 

 18.2 



222.5 

 11.1 



1,013.8 

 26.6 



15 4 





5.1 















48.5 

 72.7 



211.4 

 95.0 



97.6 



987.2 

 97.4 



10.3 



Digestibility of entire ration (per cent) . . 







66.8 



Estimated digestibility of oil alone (per 





















Experiment No. 830, subject G. S. M.: 



Blancmange containing pumpkin-seed oil 



1,524.0 

 231.0 

 632.0 

 445.0 



771.3 

 20.8 

 549.2 



26.8 



24.5 



5.0 



230.7 

 3.5 

 1.3 



486.8 



178.5 



73.3 



445.0 



8.4 

 3.7 



Fruit 



3.2 



















2,832.0 

 91.0 



1,341.3 



56.3 

 26.6 



235.5 

 11.9 



1, 183. 6 

 43.2 



15 3 





9.3 















29.7 

 52.8 



223.6 

 94.9 



98.7 

 76.5 



1, 140. 4 

 96.4 



6.0 









39.2 



Estimated digestibility of oil alone (per 









Average food consumed per subject per day. 



863.8 



395.7 



20.5 



366.2 



5.1 



Summary of digestion experiments with pum,pkin-seed oil in a simple mixed 



diet. 





Subject. 



* Digestibility of entire ration. 



Estimated 

 digesti- 



Experiment No. 



Protein. 



Fat. 



Carbo- 

 hydrate. 



Ash. 



bility of 



pumplrin- 



seed oil 



alone. 



829 



P. K 



Per cent. 

 72.7 

 52.8 



Per cent. 

 95.0 

 94.9 



Per cent. 

 97.4 

 96.4 



Per cent. 

 66.8 

 39.2 



Per cent. 

 97.6 



830 



G. S. M 



98.7 











62.8 



95.0 



96.9 



63.0 



98.2 









In the two tests reported above the subjects ate 21 grams of pro- 

 tein, 77 grams of fat, and 366 grams of carbohydrate, which sup- 

 plied 2,235 calories of energy. Of the 76 grams of fat eaten daily 

 74.5 grams was pumpkin-seed oil. As they reported no laxative 

 effects resulting from this diet it may be concluded that the limit of 

 tolerance for pumpkin-seed oil is in excess of 75 grams daily. The 

 diet as a whole was well assimilated, for the digestibility was found 

 to be 62.8 per cent for protein, 95 per cent for fat, and 96.9 per cent 

 for carbohydrate. The value 98.2 per cent for the digestibility of 

 pumpkin-seed oil implies that this oil is well assimilated. While 

 the supply of pumpkin-seed oil available was sufficient for only two 

 tests, the results of these seem to justify the conclusion that pumpkin- 

 seed oil of good quality would be a valuable food and possess a dietary 

 value similar to that of better-known edible oils. 



