20 
BULLETIN 1166, U. S. DEPARTMENT OF AGRICULTURE. 
Apple-pectin pulp was first brought to the attention of the De- 
partment of Agriculture by a manufacturer who found this so- 
called " extracted apple pomace " a waste product and its disposal 
a source of annoyance. A representative sample of the fresh, moist 
residue was analyzed. Later a sample of the dried product was 
received from another manufacturing company, which proposed put- 
ting it on the market as a stock food, under the name of " dried 
apple-pectin pulp," and had equipped a plant for that purpose. 
Representative subsamples (Nos. 36675 and 37866) of the two 
lots of dried pulp used in the feeding experiments were analyzed 
in the same way as the dried pomace samples (p. 11). These lots 
of the feed, which were sound and sweet and had been well dried, 
may be considered to be fairly representative of commercially dried 
apple-pectin pulp. 
Table 10 gives the data obtained in the chemical examination of 
the dried pectin pulp, as well as those obtained in the examination 
of the dried beet pulp with which the pectin pulp was compared in 
the milk-production test (p. 30), with the exception of the spe- 
cific acidities of the extracts which are included in Table 8. As the 
pectin pulp and the beet pulp were mixed with three times their 
weight of water before being fed, calculated values showing the 
composition of the respective " mashes " are given in Table 10. The 
composition of the corn silage with which the pectin pulp was com- 
pared in the preliminary trial is also included. 
Table 10. 
-Composition of dried apple-pectin pulp, dried teet pulp, and com 
silage. 
Product. 
Dried apple-pectin pulp (not ground at 
factory) 
Dried apple-pectin pulp with seeds removed 
( from sample 37373) 
Dried apple-pectin pulp (400-pound lot) 
Dried apple-pectin pulp (2-ton lot) 
Dried beet pulp 
Dried apple-pectin pulp (sample 36675) 
mixed with 3 times its weight of water, 2 as 
fed. 
Sam- 
ple 
No. 
fed. 
Cornsih 
Dried apple-pectin pulp (sample 37866) 
mixed with 3 times its weight of water, 2 as 
fed 
Dried beet pulp (sample 37867) mixed with 3 
times its weight of water,' 2 as fed 
37373 
37736 
36675 
37S66 
37867 
|3t;873' 
137157, 
Mois- 
ture 
at 
65°- 
ro°c. 
Ash. 
Ether 
ex 
tract. 
tract. 1 
P.ct. 
7.91 
7.57 
6.19 
6.90 
.54 
1.70 
.10 
P.ct. 
3.07 
.60 
P.ct. 
7.13 
6.81 
6.88 
7.13 
8.25 
1.70 
1.70 
1.80 
2.10 
Albu- 
min 
oids 
Crude 
fiber. 
Xitro- 
gen- 
P.ct. 
6. 25 
1.60 
P.ct. 
28. 50 
'27. 66 
24. 13 
25. 60 
19.59 
6.00 
7.00 
ex- 
tract. 
P.ct. 
47.23 
47.74 
50.54 
46.66 
57.94 
12.70 
15.80 
11.60 
4. 90 14. 50 
i More nearly true fat than ether extract. 
2 The results reported for this sample were calculated. 
