2j6 
Journal of Agricultural Research 
Vol. XIV, No. 7 
hydrogen, respectively, at a temperature of 30° C. The changes in 
composition of the stored halves as compared with the halves analyzed 
immediately are given in Table II. 
Table II .—Changes in composition of sweet potatoes stored for five days under different 
conditions 
STORED IN OXYGEN AT 30° C. AND AT ATMOSPHERIC PRESSURE 
Sweet potato. 
No. 
On the basis of fresh material. 
On the basis of dry matter. 
Moisture. 
Starch. 
Reducing 
sugar as 
glucose. 
Cane 
sugar. 
Starch. 
Reducing 
sugar as 
glucose. 
Cane 
sugar. 
Per cent. 
Per cent. 
Per cent. 
Per cent. 
Per cent. 
Per cent. 
Per cent. 
7 ? . 
77.07 
15. 16 
0. 21 
I. 82 
66 . II 
0.92 
7 - 94 
7 ^. 
76. 96 
II. 92 
I. IO 
3 * 97 
5 i- 74 
4-77 
i 7 - 23 
8a. 
75 - 96 
is- 87 
- 2 3 
2.10 
66. 02 
.96 
8. 74 
8 b. 
76. 65 
13 * 23 
.98 
3-27 
56. 66 
4. 20 
14 . OO 
9f. 
76. IO 
15. 80 
•30 
2.08 
66 . ft 
1. 26 
8. 70 
9 b. 
74.87 
13 * 74 
i- 34 
3-81 
54.68 
5 - 33 
15.16 
10a. 
76.70 
IS -75 
•43 
1.94 
67. 60 
I. 84 
8-33 
10b. 
77.08 
i 2 - 57 
1.69 
2. 98 
54-84 
7-37 
13.00 
11a. 
76. OI 
l6. 19 
*25 
i- 95 
67.49 
I. 04 
8.13 
11b. 
73 - 72 
I S* 07 
1.23 
3 - 35 
57 - 34 
4.68 
12.75 
12a. 
76.32 
15-79 
•32 
2.13 
66 . 68 
i -35 
9 . OO 
12b. 
77- 6S 
11.89 
i- 39 
3- S 2 
S3- 20 
6. 22 
15*75 
STORED IN AIR AT 30° C. AND AT ATMOSPHERIC PRESSURE 
i3 a . 
76. 28 
IS. 92 
0. 29 
2 09 
67.12 
I. 22 
8.81 
13b. 
76-35 
14. °5 
1-45 ; 
3-21 
59- 4i 
6.13 
i3* 57 
14a. 
75- 78 
16.18 
-30 
2.19 
66.81 
I. 24 
9.04 
14b. 
75- 87 
14.97 
I-3 2 
2.10 
62.04 
5- 47 
8. 70 
* 5 a . 
77-54 
14.69 
•25 
2.11 
65.40 
1.11 
9- 39 
15b . 
77.04 
13- 70 
15 
2.67 
59- 67 
5- 01 
11.63 
16a.. 
76.46 
16.06 
.41 
i* 75 
68. 22 
1.74 
7-43 
16b. 
75-9«> 
I 5- °3 
1. 46 
2.31 
62.37 
6.06 
9- 59 
17a. 
75.02 
16.80 
•25 
2.11 
67. 26 
1.00 
8. 45 
17b. 
74- 95 
15.18 
•77 
3- 
60. 60 
3- 07 
12.42 
18a. 
76.08 
i5* 78 
t2 J 
2.12 
65.97 
i- 05 
8.86 
18b. 
74-75 
15-03 
.85 
3.16 
59-53 
3*37 
12. 52 
STORED IN HYDROGEN AT 30° C. AND AT ATMOSPHERIC PRESSURE 
19a. 
76.47 
i5- 74 
O. l8 
1. 78 
66. 89 
0. 77 
7- 5b 
19b. 
77. 26 
n* 94 
29 
4-36 
S 2 . 51 
1. 28 
19.17 
20a. 
77- IS 
15- 57 
23 
1.84 
68. 14 
1. 01 
8. 05 
20b. 
77- 47 
12.44 
.28 
4-15 
55- 22 
1. 24 
18. 42 
21a. 
78. 08 
14. 63 
•17 
i- 93 
66. 75 
. 76 
8.80 
21b. 
78.18 
n-75 
*34 
4-5° 
53-85 
1. 56 
20. 62 
22a. 
76.83 
15.11 
. 16 
2. 30 
65.21 
.69 
9-93 
22b. 
77- 50 
11. 69 
. 26 
4- 78 
51.96 
1.16 
21.25 
23a. 
76.86 
15-63 
. 18 
2. 03 
67- 55 
.78 
8. 77 
23 b . 
77.16 
i2- 57 
*32 
4. 50 
S5-°4 
1. 40 
19. 70 
24a... 
77. 60 
i5- 3° 
.41 
1. 61 
68.30 
1.83 
7. 19 
24b. 
79.01 
10-93 
.41 
4. 22 
52.07 
i*95 
20.10 
