APPLE BY-PRODUCTS AS STOCK FOODS. 
21 
Table 10. 
-Composition of dried apple-pectin pulp, dried beet pulp, and corn. 
silage — Continued. 
Product. 
Sam- 
ple 
No. 
Pen- 
to- 
sans. 
Re- 
duc- 
ing 
su- 
gars 
as in- 
vert. 
Non- 
reduc- 
ing 
su- 
gars 
as 
su- 
crose. 
-larch 
meth- 
od). 
De- 
gree 
of 
acid- 
ity. 
Wa- 
ter- 
insol- 
uble 
sub- 
stance. 
Wa- 
ter- 
in sol- 
uble 
crude 
pro- 
tein. 
Alco- 
hol 
pre- 
cipi- 
tate. 
Tola! 
hy- 
dro- 
cyanic 
a< id 
(H< 
N • 
Dried apple-pectin pulp (not ground at 
37373 
37736 
36675 
P.ct. 
13.10 
11.60 
12.70 
12.20 
26.40 
3.20 
U.80 
3.00 
6.60 
P.ct. 
P.ct. 
P.ct. 
Cc. N 
acid 
per 
kilo. 
312 
P.ct. 
P.ct. 
P.ct. 
P.ct. 
3 0.00 
Dried apple-pec-tin pulp with seeds re- 
.00 
Dried apple-pectin pulp (400-pound 
lot) 
4.66 
3.52 
.35 
1.20 
0.44 
.43 
1.35 
.10 
?*6."i" 
V2.4 
242 
\ 248 
48 
60 
6 340 
| 62 
12 
.00 
Dried apple-pectin pulp (2-ton lot) 
37866 
37867 
68.91 
6. 88 9. 30 
-.00 
Dried apple-pectin pulp (sample 36075) 
mixed with 3 times its weight of 
Corn silage, as fed 
(36873 
\37157 
Dried apple-pectin pulp (sample 378G6) 
mixed with 3 times its weight of 
.90 
.10 
.10 
.30 
f 1.5 
1 «.e 
17.20 
1.70 
2.30 
Dried beet pulp (sample 37867) mixed 
with 3 times its weight of water, 2 as 
fed 
2 The results reported for this sample were calculated. 
3 Although the test on the whole sample gave a negative result, a separate test on the seeds (2 per cent of 
the sample) gave a positive result. 
4 Obtained by the 60 per cent alcohol purification method. 
6 This samp e contained a very small quantity of seed tissue which, when tested separately with added 
emulsiri, gave a positive result. 
6 Nonvolatile, 150. 
The similarity in composition between the pectin pulp, moistened 
as fed, and the corn silage is striking, if the acidity be excepted. 
While the result for ether extract in the pectin pulp is twice that 
in the silage, the true fat content, gauged by the petroleum-ether 
extract, is but little greater. The beet pulp " mash " is higher in 
crude protein, although lower in albuminoids, but contains prac- 
tically no fat and a negligible quantity of sucrose. Albuminoid 
nitrogen in the one sample of pectin pulp tested for it constituted 
over 90 per cent of the total nitrogen. This agrees well with corre- 
sponding data found in the literature for apple pomace (79, 108). 
The malt-diastase determination of starch was no more satis- 
factory for dried pectin pulp than for dried pomace, nor was the 
colorimetric method reliable. The results obtained by the 60 inn- 
cent alcohol purification method probably more nearly represent 
the true starch content. 
The sample from which seeds had been separated, like the corre- 
sponding dried pomace sample, still contained tine seed tissue, 
judging by the ether extract and protein contents. This line seed 
material probably had lost its cyanogenetic property, as in rup- 
tured seed tissues, particularly when moist, such reactions are soon 
completed, and any hydrocyanic acid formed would have been 
eliminated in the drying process. 
The degree of (total) acidity ranges from 12, for the moist beet 
pulp, to 340, for the corn silage, with the pectin pulp "mash" 
