EFFECT OK ALKALI TLKATMKXT ON COCOAS. 



17 



ing ratio for the untreated cocoa has a maximum of 0.71, with an 

 average of 0.51. This simply bears out the general belief that in a 

 treated cocoa the soluble ash is approximately two-thirds of the total, 

 while in an untreated cocoa it is one-third of the total. 



Table 11: — Ash ratios on alkali- treated cocoas. 





Water-soluble 

 ash 



Alkalinity water- 

 soluble ash 



No. 



Water-soluble 



ash 



Alkalinity water- 

 soluble a li 



No. 



Water-insoluble 

 ash 



Alkalinity water- 

 insoluble ash 



Water-insoluble 

 ash 



Alkalinity water- 

 insoluble ash 





Cocoa. 



Water- 

 soluble 

 matter. 



Cocoa. 



Water- 

 soluble 

 matter. 



Cocoa. 



Water- 

 soluble 

 matter. 



Cocoa. 



Water- 

 solublc 

 matter. 



4 



1.32 

 1.41 

 1.70 

 3.18 

 2.72 

 4.03 

 2.57 

 1.36 

 1.68 

 2.95 

 3.16 

 2.49 

 2.88 

 2.80 

 1.59 

 3.20 

 .60 

 .37 



5.06 

 2.19 

 3.01 

 7.55 

 7.83 

 11.45 

 6.08 

 3.25 

 3.88 

 3.68 

 6.59 

 12.20 

 11.60 

 5.39 

 8.78 

 4.83 

 3.75 

 2.18 



1.88 



.82 



1.32 



1.18 



1.35 



1.63 



1.07 



.89 



1.01 



1.31 



1.12 



2.12 



2.19 



1.58 



1.44 



1.60 



.45 



.38 



2.36 

 1.32 

 2.00 

 2.43 

 2.33 

 3.80 

 1.62 

 1.19 

 1.47 

 3.41 

 2.59 

 4.87 

 3.00 

 4.62 

 3.63 

 2.47 

 .89 

 .83 



8 



2.75 

 2.03 

 4.14 

 1.33 

 1.20 

 1.34 

 .81 

 1.20 

 2.70 



7. OS 

 5.00 

 4.46 

 3.84 

 3.83 

 4.14 

 3.09 

 3.31 

 4.90 



1.16 



.76 

 2.15 



.79 

 .79 

 .69 

 .63 

 .90 

 1.62 



] . 85 



2 



10 



1.14 





16 



4. 33 



11 



9... 



1.40 



12 



52... 



1.59 



15 



53 



1.91 



2S 



46... 



1.13 



24 



49 



1.27 



22 



6 



2.88 



33 



Maximum . 

 Minimum- 

 Average . . . 



34 





7 



4.14 

 .37 

 1.88 



12.20 

 2.18 

 4.51 



2.19 

 .38 

 1.26 



4. 87 



20 



.S3 



21 



2.31 



31 





18 



3.67 

 2.98 

 2.63 

 4.58 



15.36 

 6.96 

 10.17 

 17.16 



1.37 

 2.93 

 2.02 

 3.00 



5.61 



17 



35 



3.62 



26 



37. . 



2.94 



50 



38 



4.44 









Similar figures for the ash of the water-soluble matter show a 

 wider variation, the ratio for the alkali-treated cocoa showing a 

 minimum of 2.18 with an average of 4.51, while the ratio on the 

 untreated cocoa has a maximum of 2.31, with an average of 1.24. 

 Only one sample of the untreated cocoa is higher than the minimum 

 of the treated cocoas. 



The ratio between the alkalinity of the water-soluble ash and the 

 alkalinity of the water-insoluble ash on the untreated cocoa varies 

 from 0.34 to 0.61, with an average of 0.41. Only two samples have 

 a ratio above 0.50. On the alkali-treated cocoas, however, the range 

 is from 0.38 to 2.19, with an average of 1.26. Aside from sample 50, 

 only one ran below 0.63. This sample had been treated with magne- 

 sium carbonate, which, of course, increased the alkalinity of the insol- 

 uble ash. In the same ratio of the water-soluble matter the untreated 

 cocoas varied from 0.36 to 1.04, with an average of 0.59. Only one 

 sample exceeded 0.75. The treated cocoas, on the other hand, varied 

 from 0.83 to 4.87, with an average of 2.31, only three samples being 

 less than 1.14. The ratios of the water-soluble and water-insoluble 

 ash of the water-soluble matter and the ratios of the alkalinities of the 

 water-soluble ash and the water-insoluble ash, on both the cocoa and 

 the water-soluble matter, are fully as complete evidence of the use 



