NOTES ON COCONUT, COPRA, AND COCONUT OIL. 



127 



was being continued in the oil, either by portions of the mold carried 

 over through the factory filters, or by enzymes which were expressed and 

 which would find their way into the final product. 



In order to determine if this supposition were correct, a number of 

 50-gram samples of the oil were subjected to different treatments, such 

 as filtration to remove sediment and most of the water, the addition of 

 antiseptic, sterilization by heat or by a combination of all three of the 

 above processes. The oils were heated at a temperature of 100° in a 

 water oven for two hours; ordinary quantitative filter paper was used 

 for filtration. Two samples from each treatment were prepared, one 

 lieing kept in a 100 cubic centimeter bottle half full, the other in a 50 

 cubic centimeter bottle filled to the neck. Unless otherwise stated, 

 samj)les were sealed with paraffin and kept in the light. One sample, 

 in the case of nmnbers 7 and 8, was kept in the light in 100 cubic centi- 

 meter Erlenmeyer flasks with sterilized cotton plugs, where air and light 

 might be expected to play the leading part in any change produced; the 

 other sample was kep»t in a wooden box covered with black paper. 



The following table shows the change in acidity during a period of 

 two years : 



Table III. — Change in acidity of coconut oil standing under different conditions for 



twQ years. 









■Sy. 



O CD 



OSVH . 



2 



OS ci 





■a 





CD 



is 



No. 



Description o£ oil. 



Description of 



package and 



condition. 



*^ a 



Ix, 





si 



1— 1 



at. 

 3.S 



1 



From original bottle unheated, 



ra. Small bottle- 

 lb. Large bottle.- 



7.6 



11.2 



3.6 



11.6 



0.4 



4.0 





unflltered, no antiseptic. 



7.6 



11.0 



3.4 



13.4 



2.4 



5.8 



2 



Unheatecl, fiUered, no antiseptic _ 



a. Small bottle— 

 .b. Large bottle- 



7.4 

 7.4 



8.8 

 8.8 



1.4 

 1.4 



9.7 

 11.2 



0.9 

 2.4 



2.3 

 3.8 



3 



Unheated, unflltered, +0.0,5 per 



fa. Small bottle__ 

 lb. Large bottle.- 



7.6 



9.6 



2.0 



10.9 



1.3 



3.3 





cent chloral. 



7.6 



9.2 



1.6 



11.9 



2.7 



4.3 



4 



Unheated, ^//ererf, H-0.05pcr cent 



a. Small bottle., 

 lb. Large bottle.. 



7.4 



8.7 



1.3 



9. .5 



0.8 



2.1 





chloral. 



7.4 



8.7 



1.3 



10.2 



1.5 



2.8 



5 



Heated, vinflltered, +0.0B per 



la. Small bottle., 

 lb. Large bottle.. 



7.6 



8.9 



1.3 



9.9 



1.0 



2.3 





cent chloral. ' 



7.6 



9.0 



1.4 



11.2 



2.2 



3.6 



6 



Heated, filtered, -yo.05 per cent 



ja. Small bottle- 



7.4 



8.2 



0.8 



8.8 



0.6 



1.4 





chloral. 



lb. Large bottle.. 



7.4 



8.9 



1..5 



10.4 



1.5 



3.0 



7 



Heated, nnfiltered, +0.0.'> per 

 cent chloral, kept in Ehrlen- 

 me.ver flask with cotton stop- 

 per. 



ja. In light 



lb. In dark 



7.4 

 7.4 



9.6 

 9.6 



2.0 

 2.0 



13.0 

 ■12.8 



3.4 

 3.2 



5.4 

 5.2 



8 



Heated, filtered, -fO.0.5 per cent 



[a. In light 



lb. In dark 



7.4 



11.0 



3.6 



15.0 



- 4.0 



7.6 





chloral, kept same as number 7. 



7.4 



11.6 



4.2 



»15.9 



4.3 



8.5 



i^ Since no increase in acidity due to the action of ligh,t could be observed after one 

 year, the samples previously kept in the dark were taken out and placed alongside the 

 others se-rving simply as a check on the determinations. 



