6 



BULLETIN 666, U. S. DEPARTMENT OF AGRICULTURE. 



of some ammonium salt was added to these nibs, either during the 

 fermentation or in the water in which they were soaked. 



Table 3. — Analyses of alkali-treated cocoas. 



No. 



Alkali. 



3 per cent potassium carbonate 



2.5 per cent potassium carbonate 



do 



do 



do 



2.5 per cent potassium carbonate and 10 

 per cent water 



1 per cent potassium carbonate 



do 



do 



3 per cent sodium bicarbonate 



2.84 per cent sodium bicarbonate 



2.5 per cent sodium carbonate 



2 per cent sodium carbonate 



do 



Sodium carbonate 



do 



4 per cent ammonium carbonate 



1.75 per cent magnesium carbonate 



2 per cent potassium bicarbonate and 1 



per cent ammonium carbonate 



do 



1.5 per cent potassium carbonate and 1.5 

 per cent sodium carbonate 



0.66 per cent potassium carbonate and 

 0.33 per cent ammonium carbonate 



2 per cent (magnesium carbonate and po- 

 tassium carbonate) 



1.5 per cent (magnesium carbonate and 

 potassium carbonate) 



1 per cent (magnesium carbonate and 

 potassium carbonate) 



do 



1.65 per cent potassium carbonate, 0.15 

 per cent sodium carbonate, and 0.32 

 per cent ammonium carbonate 



Maximum. 

 Minimum. 

 Average . . . 



Ash. 



Total. 



Imported. 



do... 



do... 



do... 



Per rt. 

 11.45 

 8.36 

 10.52 

 11.49 

 11.00 



11.07 

 8.31 

 9.07 

 9.20 

 8.76 

 10.48 

 11.45 

 10.97 

 10.23 

 11.39 

 9.60 

 7.66 

 8.91 



9.50 

 8.59 



11.62 



9.15 



7.78 



S.29 



7.87 

 9.32 



11.62 

 7.66 

 9.73 



Water- 

 soluble. 



Per ct. 

 6.52 

 4.89 

 6.63 



8.87 

 5.9S 

 5.22 

 5.82 

 6.54 

 7.96 

 8.17 

 8.15 

 7.54 

 6.99 

 7.32 

 2.87 

 2.43 



6.97 

 5.75 



9.36 



5.22 



4.25 



4.75 



3.52 

 5.08 



7.79 



Water- 

 insol- 

 uble. 



Per ct. 

 4.93 

 3.47 

 3.90 

 2.74 

 2.92 



2.20 

 2.33 

 3.85 

 3.38 

 2.22 

 2.52 

 3.28 

 2.82 

 2.69 

 4.40 

 2.28 

 4.79 

 6.48 



2.53 

 2.84 



2.26 



3.83 



3.53 



3.54 



4.35 

 4.24 



2.90 



9.30 

 2.43 

 6.35 



6.48 

 2.20 

 3.38 



Alkalinity of ash (N/10 

 acid per gram of 

 sample). 



Water- 

 soluble. 



Cc. 



7.90 



4.00 



5.90 



7.25 



7.35 



7.75 

 5.10 

 4. SO 

 5.45 

 6.65 

 6.60 

 11.15 

 9.95 

 8.60 

 7.70 

 8.20 

 2.25 

 2.40 



6.25 

 4.25 



10.35 



4.40 



4.10 



4.45 



3.15 

 4.50 



6.90 



11.15 

 2.25 

 5.46 



Water- 

 insol- 

 uble. 



Cc. 



4.20 



4.90 



4.55 



6.15 



5.40 



4.80 

 4.80 

 5.35 

 5.35 

 5.05 

 5.90 

 5.25 

 4.90 

 5.30 

 5.30 

 5.15 

 5.10 

 6.20 



5.40 

 5.50 



4.85 



5.55 



5.25 



6.35 



5.05 

 5.00 



6.35 

 4.20 

 5.21 



Total. 



Cc. 

 12.10 



8.90 

 10. 45 

 13.40 

 12.75 



12.55 

 9.90 

 10.15 

 10. SO 

 11.70 

 12.50 

 16. 40 

 14. 85 

 13. 90 

 13.00 

 13.35 

 7.35 

 8.60 



11.65 

 9.75 



15.20 

 9.95 

 9.35 



10.80 



8.20 

 9.50 



16.40 

 7.35 



10. 07 



10.10 

 13.30 

 11.42 

 11.94 



Protein 

 (Nx 



6.25). 



Per ct. 

 32.72 

 31.72 

 32. 57 

 33. is 

 33.79 



32.20 

 33.04 

 31.45 

 32.59 

 32. 87 

 31.09 

 29.57 

 28.71 

 29.62 

 30.45 

 32.17 

 30. IS 

 30.69 



31.29 

 31.63 



31.92 



31.29 



27.75 



33.52 



31.31 

 30.82 



30.97 



36.18 

 27. 75 

 31.88 



7.94 



2. 16 



7.40 



5.35 



12.75 



9.95 



3.35 



7.50 



3.25 



12.75 



8.27 



3.15 



7.10 



3.50 



10.00 



9.80 



2.14 



9.00 



3.00 



12.00 



33. 00 

 33. 82 

 31.35 

 30.84 



Sample 2 was supposed to have been made by the addition of 2.5 

 per cent potassium carbonate. The results obtained, however, would 

 seem to indicate the addition of a much smaller quantity than this, 

 probably not more than 1 per cent. Samples 34, 35, 37, and 38 are 

 imported samples, all of which have been treated with alkalis, the 

 kinds and percentages of which are, however, unknown. 



The total ash on the samples varies from 7.G6 to 11.62 per cent, 

 with an average of 9.73 per cent. The minimum ash is that of a 

 cocoa treated with 4 per cent ammonium carbonate, which wiU, of 

 coarse, volatilize in the heating which the product subsequently under- 

 goes. With this exception the lowest ash is 7.78 per cent, being the 



