CONCORD GRAPE JUICE. 
15 
Table 7. — Chemical composition of Concord grape juice at time of storing and after 4 
months' storage. 
a 
3 
6 


a 

d 

fl 
O) 
u 

u 
05 d 
I 


"*? 
8 rf 
4^ 
Analysis before or 
d 
§ 
CB 
d 
s 
a 
1 
>> 
as 
Ms 
•SpT 
m 
■« 
<D CP 
t> ft 
,a PI 
M.S 

ft 
T3 
ft 
| 
03 O 
a, 
5 7! 
O 0J 
03 ft 
u 
ft 
'0 

[h 
<v 
ft 
03 
d 
"5 °' 
II 
is 

°ft 
3 
M 
Pi d 
S w 
alter storage. 
w 
(-1 
-t-= O 
2 
38 
03 
O 



"o ft 
K2 
. 
h"3 
O Pn 
PI ft 
ft 
1° 
a 'S 
53 > 
03 CO 
c3 
So 
1 
'3 
03 
si 
03 
<p 
a? 
O 
3 
03 
(9 
ft 
'3 03 
jJ4 
03 
.3 
^ 
3 
O 


co 
03 
CO 
< 
CO 
CO 
fc 
H 
Eh 
£ 
O 
**< 
""j 
"< 
Eh 
Grams. 
P.et. 
Gms. 
Gms. 
Gms. 
Gms. 
Gms. 
Gms. 
Gms. 
Gms. 
Cc. 
Cc. 
Gms. 
Before 
17.01 
1.03 
13.25 
13. 38 
3.76 
1.26 
0.99 
0.30 
0.72 
0.34 
38.4 
7.6 
0.26 
After 
16.41 
1.07 
13.34 
13.47 
3.07 
1.10 
.72 
.28 
.47 
.22 
24.8 
4.4 
.19 
B»fore 
16.99 
.64 
13.55 
13.60 
3.44 
1.11 
.88 
.26 
.64 
.34 
33.8 
7.6 
.17 
After 
16.41 
.70 
13.58 
13.45 
2.83 
1.01 
.69 
.24 
.49 
.24 
25.8 
4.4 
.13 
Before 
17.01 
13.95 
13.99 
3.06 
1.08 
1.03 
.24 
.85 
.44 
45.2 
7.2 
.28 
After 
-- 
16.62 
"."67* 
13.80 
13.89 
2.82 
.95 
.78 
.23 
.60 
.30 
32.0 
4.6 
.21 
Before 
17.59 
14.45 
14. 60 
3.14 
1.08 
.97 
.24 
.77 
.39 
40.8 
7.6 
.20 
After 
17.17 
"."69" 
14.50 
14.41 
2.67 
1.02 
.84 
.27 
.63 
.32 
33.6 
4.4 
.16 
Before 
18.50 
15.11 
15.15 
3.39 
1.07 
1.02 
.31 
.74 
.37 
39.6 
8.0 
.19 
After 
17.69 
""."66" 
14.99 
14.95 
2.70 
.92 
.69 
.19 
.54 
.27 
28.6 
4.6 
.17 
Before 
19.76 
16.39 
16.55 
3.37 
1.04 
1.00 
.24 
.80 
.39 
42.8 
7.6 
.20 
After 
19.18 
"*.*i6" 
16.15 
16.30 
3.03 
.91 
.75 
.27 
.53 
.29 
28.0 
3.8 
.18 
Before 
17.35 
13.97 
14.05 
3.38 
.98 
.90 
.13 
.81 
.39 
43.2 
8.0 
.15 
After 
16.47 
■"."13" 
13.87 
13.82 
2.60 
.83 
.65 
.13 
.57 
.31 
30.4 
4.4 
.13 
Before 
18.48 
.14 
15.07 
15.11 
3.41 
1.25 
.85 
.15 
.73 
.37 
39.0 
8.0 
.26 
After 
17.95 
.23 
15.02 
15.13 
2.93 
1.07 
.66 
.22 
.50 
.24 
26.6 
3.0 
.22 
Before 
17.84 
.58 
14. 32 
14.49 
3.52 
1.27 
.97 
.17 
.86 
.40 
45.6 
8.0 
.24 
After 
• • 
17.33 
.69 
14.32 
14.30 
3.01 
1.07 
.58 
.14 
.49 
.24 
26.0 
3.4 
.17 
Before 
18.08 
14.70 
14.74 
3.38 
1.22 
.89 
.19 
.76 
.37 
40.4 
6.4 
.22 
After 
17.85 
""."23" 
14.88 
14.84 
2.97 
1.08 
.67 
.22 
.50 
.27 
26.4 
3.4 
.17 
Before 
18.50 
15.10 
15.21 
3.40 
1.22 
.90 
.15 
.80 
.38 
42.8 
7.2 
.27 
After 
... 
18.22 
"."id" 
15.26 
15.21 
2.96 
1.09 
.70 
.21 
.55 
.27 
29.0 
3.6 
.20 
Table 8. — Maxima, minima, and averages of data given in Table 7: Changes in chemical 
composition of Concord grape juice resulting from 4 months' storage. 
d 
o 
S 
is" 
> > d 
p- CO 
Pi <3 
> a 
CO 
^H 
m 
^2 
03 d 
3§ 
2s 
23 8 
|8g 
1 . 
C 
03 O 
CP 
ft 
03 O 
8 
8 
2£ 

w Sd 
io 
.3 .8 
Is 

O £ 
9| . 
d " d 
•d ° 
3 5PS 
ft 
c/T 
a 1 
"3£g 
03 g 
^T 1 
tut.. S-t 
a ® 
w ft 
2 a 
03 
5s ^ ~ 
IS 
ft 
o| 
ft 
1 - s 
■a -9 a 
S c3 ft 
1.2 
O 
^ft 
^s ft 
O 
t?^ 
o£2 
CP 
2 
M 
^03ft 
pf!2o1 
3 ^2 
CO , 
CO 
CQ 
fc 
Eh 
Eh 
Pn 

<j 
<1 
<5 
Eh 
Before: 
Grams. 
Grams. 
Grams. 
Grams. 
Grams. 
Grams. 
Grams. 
Grams. 
Grams. 
Cc. 
Cc. 
Grams. 
Maximum 
19.76 
16.39 
16. 55 
3.76 
1.27 
1.03 
0.31 
0.86 
0.44 
45.6 
8.0 
0.28 
Minimum . 
16.99 
13. 25 
13.38 
3.06 
.98 
.85 
.13 
.64 
.34 
33.8 
6.4 
.15 
Average... 
17.92 
14.54 
14.62 
3.38 
1.14 
.94 
.21 
.77 
.39 
41.1 
7.5 
.22 
After: 
Maximum 
19.18 
16.15 
16.30 
3.07 
1.10 
.84 
.28 
.63 
.32 
33.6 
4.6 
.22 
Minimum. 
16.41 
13.34 
13.45 
2.60 
.83 
.58 
.13 
.47 
.22 
24.8 
3.0 
.13 
Average... 
17.39 
14.52 
14.52 
2.87 
1.01 
.70 
.22 
.53 
.27 
28.3 
4.0 
.18 
Average loss.. 
.53 
.02 
.10 
.51 
.13 
.24 
-.01 
.24 
.12 
13.0 
3.5 
.04 
A hot grape juice represents a supersaturated solution of cream of 
tartar. As the juice in the carboy cools, the cream of tartar crystal- 
lizes until the solution is reduced to the point of saturation. This 
