Above mentioned fish were caught in the coldest season. The samples of oils were obtained from these fish.
I. Catfish oil.
A sample of the catfish (
Parosilurus asotus Linne) oil was analyzed, and the following properties have been observed :
Body oil Internal Liver oil organs oil
Yield% 4.11 0.79 2.33
d154 0.9199 0.9268 -
n15D 1.4710
n20D1.4753
n20D1.6730
A.V. 7.6 66.2 36.6
S.V. 191.2 171.2 215.9
I.V. 120.7 166.4 166.0
(Wijs)
Unsaponifiable 2.01 16.93 13.37
matter %
Color Reddish brown Yellow Dark brown
Liver oil value 2.0 (+)
1) (+)
2) *1), 2) : Color reaction with cone H
2SO
4 The mixed fatty acids of the body oil had the following constants :
Yield% N.V. I.V. Color
92.50 201.4 125.3 Yellowish brown
The solid and liquid acids separated from the mixed acids had the following data :
Solid acids Liquid acids
Yield% 25.91 74.09
d204 - 0.9092
n20D - 1.4656
N.V. 209.0 196.8
I.V. 23.5 158.9
mp (°C) 47.248.6 -
Color Pale yellow Dark red
The above solid and liquid acids of the mixed acids composed of the following acids respectively :
(i) Sold acids : Chiefly C
16, C
18 and minor amounts of C
20, C
22, C
14, C
12 acid.
(ii) Liquid acid : C
18-_??_
1, _??_
2, _??_
3 and minor amounts of C
16-_??_ : C
22-_??_
1, _??_
2, _??_
3 (_??_
4?) acid and C
22 unsaturated.
Unsaponifiable matter mp (°C) I.V. Color
Body oil 110.5117.8 136.9 Yellowish red
Internal organs oil 142144 - Colorless
Liver oil 141143 - Colorless
II. Crucian oil
The samples of the crucian oils of the body and internal organs were obtained from the fish by ether extraction and had the following properties :
Body oil Internal organs oil
Yield% 2.78 1.25
d154 0.9188 0.9188
n15D 1.4724 1.4725
A.V. 15.1 58.2
S.V. 193.4 172.9
I.V. 122.6 150.6
Unsaponifiable matter% 1.85 12.18
Color Reddish brown Yellowish brown
Liver oil value 0 0
The mixed fatty acids of the body oil had the following data :
Yield% N.V. I.V. Color
92.60 202.9 126.1 Yellowish red
The solid and liquid acids separated from the mixed acids had the following properties :
Solid acids Liquid acids
Yield% 26.26 73.74
d204 - 0.9092
n20D - 1.4660
N.V. 210.0 199.4
V.I. 19.3 158.6
mp (°C) 48.550.6 -
Color Pale yellow Dark red
The solid and liquid acids composed of the following acids respectively :
(i) Solid acids : Chiefly C
16, C
18 and minor amounts of C
14, C
20, C
12 acid.
(ii) Liquid acids : Chiefly C
18-_??_
1, _??_
2 and minor amounts of C
16-_??_
_??_, C
20-_??_
1, _??_
2, _??_
3 acid.
Unsaponifiable matter mp (°C) I.V. Color
Body oil 111.4118.6 125.6 Yellowish red
Internall 142146 - Pale yellow organs oil
III. Hymenophso curia oil
This oil extracted from the only one fish (460g) of “Hymenophso curta” by ether extraction had the following properties :
Yield%
d154 n15D S.V. I.V.
3.46 0.9215 1.4707 198.1 113.7
Unsaponifiable matter % Collor
2.29 Yellowish brown
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