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. 
Alkalinity of ash (N/10 
Ash. acid per gram of 
sample). . 
Protein 
No. Alkali. | Se 
= Water- | Water- etal 
Total. eee insol- | ae insol- | Total. 
| “| uble. uble. 
Perc: |Renck| penck. Cec Ce Ce. -| Perc: 
4 | 3 per cent potassium carbonate. .-.-...---. 11.45 6.52 4.93 7.90 4.20} 12.10 32.72 
2 | 2.5 per cent potassium carbonate. .--.--.. 8.36 4.89 3.47 4.00 4.90 8.90 31.72 
| eee CG shad ee eli rs aS oe areenere ne Lae 10. 52 6.63 3.90 5.90 4.55 | 10.45 32.57 
iil | Seeee COS ae ae Pies Se eee ee eee 11.49 8.75 2.74 Us 6.15 | 13.40 33.18 
2 ee GOR eC eee ih eee ee ee 11.00 8.08 2.92 7.35 5.40 | 12.75 33.79 
15 | 2.5 per cent potassium carbonate and 10 | i 
Percent watereee es sees eee 11.07 8.87 2.20 MetD 4.80; 12.55 32.20 
28 | 1 per cent potassium carbonate. .--....--- | $8.31 5.98 2.33 5.10 4.80 9.90 33.04 
AS Sees GOSS ea ee Sree aoc oe eee 907 B22 3.85 4.80 5.355] 40545 31.45 . 
PI | reese 6 6 eRe semen Seam eee 9.20 5. 82 3.38 5.45 5.35 | 10.80 32.59 
33 | 3 per cent sodium bicarbonate....-.--.---- 8.76 6. 54 2.22 6.65 5.05 | 11.70 32.37 ae 
7 | 2.84 per cent sodium bicarbonate. .--.--. 10.48 7.96 2252 6.60 5.90 | 12.50 31.09 ae 
20 | 2.5 per cent sodium carbonate.......--.- 11.45 8.17 3.28 | 11.15 5.25 | 16.40 29.57  s 
21 | 2 per cent sodium carbonate.......------ 10. 97 8.15 2.82 9.95 4.90} 14.8 28.71 2 
SIR en OhO ee Serene ae a aeeen Aer 10. 23 7.54 2.69 8.60 5.30 | 13.90 29.62 
18 | Sodium carbonate!_-..-.--------.------: | 11.39 6.99 4.40 7.70 5.30 | 13.00 30.45 
fleece On sss Bee a nes pease Rene | 9.60 fae 2.28 8. 20 Hi Tea 32.17 
26 | 4 per cent ammonium carbonate. --.---- 7.66 2.87 | 4.79 225 5.10 TARE 36.18 
50 | 1.75 per cent magnesium carbonate....-- 8.91 2.43 6.48 2.40 6.20 8.60 30.69 
8 | 2 per cent potassium bicarbonate and 1 
per cent ammonium carbonate..-..-.-- | 9.50] 6.97] 2.58 6.25} 5.40] 11.65} 31.29 
10,152. Ose Fe 22 Ok ee ee ee | 8.59] 5.75| 2.84] 4.25] 5.50| 9.75] 31.63 
16 | 1.5 per cent potassium carbonate and 1.5 
per cent sodium carbonate. -.-........-- 11.62 9.36 2.26 | 40.35 4.85 | 15.20 31.92 
9 | 0.66 per cent potassium carbonate and 
0.33 per cent ammonium carbonate...-} 9.15 Deoe 3. 83 4.40 5.55 | 9.95 31.29 
52 | 2percent (magnesium carbonate and po- 
Lassignycarpon ae) ==> o-oo eee 7.78 4.25 3553 4.10 5:25 OS ieee 
53 | 1.5 per cent (magnesium carbonate and 
potassium’ carhonate)=—---s-eee-a=e-e ee 8.29 4.75 3. 54 4.45 6.35 | 10.80 33. 52 
46 | 1 per cent (magnesium carbonate and 4 
potassium carbonate). --...-.--.------- (ey | SLAY 4.35 3.15 5.05 8.20 31.31 
AQ Noses: GO 2S areca eee eee ees seins | 9.32) 5.08| 4.24 4.50 5.00 9.50 30.82 
6 | 1.65 per cent potassium carbonate, 0.15 ll 
per cent scdium carbonate, and 0.22 7 
per cent ammonium carbonate......--. 10. 69 1219" -2,90 6.90 4.20 | 11.10 30.97 z 
(UR EU INTE (epee eee pees eM Ree SBI 11.62] 9.36] 6.48] 11.15] 6.35,| 16.40] 36. 153Re 
MANN INAS aaa oe et ce oe 7.66 2.43 | 2.20 2.25 4.20 7.39 27.75 
AN CLAUCnemer eee eer P re eee ea ene eee 9.7 Beas} S33 5.46 5e21" | 10567, 31.88 
34) Tmporbed so c7 Snes nsec ee ee ee 10. 10 7:94) 236 7.40 5-35) | alas 33.00 | 
Ate esee Ost ach soe eee he eee Pe ees 13.30 9.95 3.35 7.50 3.25] 42.575 33.82 
STalt cass OG. es ae en ee mead 11.42) 8.27] 3.15] 7.10] 3.50] 10.60| 31.35ammm 
 telhl aae GO is2 ei eee ee ee se eons 11.94 9.80 2.14 9.00 3.00 | 12.00 30. 84 a 
: i” 
Sample 2 was supposed to have been made by the addition of 2.56 | 
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 q 
kinds and percentages of which are, however, unknown. 
The total ash on the samples varies from 7.66 to 11.62 per cent, ql 
with an average of 9.73 per cent. The minimum ash is that of a 
cocoa treated with 4 per cent ammonium carbonate, which will, of 
course, volatilize in the heating which the product subsequently under- 
goes. With this exception the lowest ash is 7.78 per cent, being the 
