36 BULLETIN 908, U. S. DEPARTMENT OF AGRICULTURE. 
CHANGES OccURRING IN FisH HeEtp IN PIcKLE AND IN Dry Satt. 
A number of experiments on a laboratory scale and on a compara- 
tively large scale were conducted to determine what changes occur 
when fish remain for certain periods of time in pickle and in dry salt. 
LABORATORY SCALE. 
Fish about 5 inches long, said to have been out of the water only 
two hours, both eviscerated and uneviscerated, were used for the 
first series of experiments. They had been carried in pickle with a 
specific gravity of 1.1212 at 25°/25° C. and a salt content of 15.5 per 
cent. 
Some of these fish, in covered porcelain evaporating dishes, were 
allowed to stand for some time in pickle obtained from a freshly 
prepared lot at an adjacent cannery. The composition of this 
pickle at the stated intervals is shown in Table 13. 
TaBLE 13.—Composition of pickle in which fish were held. 
From eviscerated fish. From uneviscerated fish. 
ve Specific | Specific | 
Condition. gravity an gravity cor 
(by Bic; | (acy. | by Pic. | acl 
nometer), * | nometer), aCl). 
25°/25° C. | 25°/25° C 
| Per cent. Per cent. 
Freshest 26a eee ts ees Ps ee ee sae ee 1.1279 16. 49 | 1.1279 16. 49 
ATC CY 24 OUTS eee ae ae Ae eo eS eek pe een 1.1150 | 14, 50 | 1.1099 13. 56 
‘A fier48 NOUPSER En ee ee eek ee ee eee eno Ree See 1.1152 14, 49 1.1120 13.98 
IAT EET: 96 NOUN Shee ae ese cise ea Se aye Saree eee eee 1.1157 | 14, 49 1.1132 13. 97 
TABLE 14.—Composition of fish held in pickle and in dry salt (2 to 96 hours). 
| Moisture and fat 
free basis. ae 
Total Acidity 
oe pare of fat 
volatile (N/20 
Condition of fish. Water. Fat. as ee sodium 
: ope Amino | ethylate 
nia and | nitrogen Acid per 
ES | ea nitrogen.| gram) 
Eviscerated fish in pickle: | Per cent. | Per cent. Mg. Mg. Mg. Ce. 
PROUTSEee eee eects cle Heal aniiaseeeee 69. 68 4, 36 16.3 62.8 1.53 12.3 
ZANOUTS Haake ees ca ce oee sacle 63. 75 ALG2) 82 tah sea ee eee - 96 12.6 
AS MOUTS es eels bss os eee 62. 30 3. 94 10.5 31.1 1.00 12.5 
OGFHOUTS aie ee pas oes ee oy omen ane 67. 39 3. 69 7.0 24, 2 1.00 10.7 
Uneviscerated fish in pickle | 
DHOUS eset ees os UR OR ee Fees 69. 33 | 3.97 | 18.6 69. 7 1. 87 15.5 
ZA MOUTS saan eee ana ses ae eee ee 63. 22 | 5. 86 13.9 45. 0 1.68 14.6 
ASINOUTS Seen reece cee sons cee ee 62. 63 9569 2/ suet ca toe a | See e see ses See ay 15.0 
OG OUES Se ee ees aan Soe ee 68. 25 | 3. 77 12.9 46.1 1.34 16.9 
Eviscerated fish in dry salt 
DAN OUTS He eee ere ec tot Nea sean Se 52. 42 5. 20 14.0 33.1 1.09 17.0 
ASOMESS Meee retin eels eee ren cicence 52. 68 4,85 12.8 30.1 1.00 16.7 
GhiHOUNS ss cer ee er ence teens ir saaion 53. 31 5. 00 15.2 36.5 1.00 16.4 
Uneviscerated fishin dry salt 
DEIN OUTS ooo oe Bee eee Cece sesh 51. 85 6.31 12.8 | 30. 6 1.44 17.3 
ARMONIS oe secret see ae se eee ee os 500. 58 6. 01 13.9 32.0 1. 03 17.1 
OGINOUTS. sass eee Soe eos kas eee e 52. 56 6. 44 | 14.0 34. 1 1.18 15.1 
