EFFECT OF ALKALI TREATMENT ON COCOAS. 
il 
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 | Alkalinity water- Water-soluble | Alkalinity water- 
ash. soluble ash ash soluble ash 
Water-insoluble| Alkalinity water- Water-insoluble| Alkalinity water- 
ash insoluble ash ash insoluble ash 
No. No. 
Water- W ater- Water- Water- 
Cocoa. |soluble| Cocoa. | soluble Cocoa. | soluble} Cocoa. } soluble 
matter. matter. matter. matter. 
ANEW ie ee er 5. 06 1. 88 QESGm| NGatmacys oat rvere DD 7.08 1.16 1.85 
Diss eete lh Oe ae 1.41 2.19 5 fey) BPA Podge aesy cer ey 2. 03 5.00 . 76 1. 14 
Gta ye eee ee 1.70 3.01 1232 POO) MV Als ssseccséoqns 4.14 4.46 DR ISS AL 88} 
11D heat ee a eae 3.18 oo) 1.18 DRA BW |e Out hie selekaeine ee 133 3. 84 79 1. 40 
PD eee ayes 5 2.72 7. 83 135 PL As els Gee cios 1. 20 3. 83 .79 1. 59 
ij <5 5 eae 4.03 | 11.45 1.63 BHO Provo esesnee de 1. 34 4.14 . 69 1. 91 
es a etsy Hd Dot 6. 08 1.07 TGQ: AG erie rns Seale . 81 3. 09 . 63 1, ales} 
G7. b8 as St ee 1. 36 3820 . 89 MELO S| AO Ay eee es ley 1. 20 3331 . 90 a2 
DDR ie ade 1. 68 3. 88 1.01 TUN NC Ghee area a ee ee 2. 70 4. 90 1. 62 2. 88 
So Mee ise aks i 2.95 3. 68 1.31 3. 41 — 
Uae ee ee ee 3.16 6. 59 12 2. 59 Maximum. 4.14 12. 20 2.19 4, 87 
Ae apt ae ake QEAOT 2420 Deo 4. 87 Minimum.. Roh 2.18 OS 83 
OF ee ee 2.88 | 11.60 2.19 3. 00 Average ..- 1.88 4.51 1. 26 2531 
Sheen ee Dt 2. 80 5. 39 1. 58 4,62 — = 
ISQGs Sei es 1.59 8.78 1. 44 SG Bybee Saoeascud BE OP |) aS BIH 1 BY 5. 61 
(ee ee es 3. 20 4.83 1. 60 RANI Meghan 4 coe as 2.98 6. 96 2. 93 3. 62 
PAO RA ae ep . 60 oy UN 45 Bee he earl ao eae QUOdu a Ose 2. 02 2. 94 
OBER eaee eae Os 2.18 -38 POPS AL Cateye eyes ese gem ee 4.58 17.16 3.00 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 
