Chemical constants

P. pangasius

P. sutchi

Acid value

2.26 ± 0.04

1.72 ± 0.02

Percentage of free fatty acid

0.87 ± 0.03%

1.14 ± 0.05%

Saponification value

257.7 ± 2.54

233.66 ± 3.35

Saponification equivalent

217.66 ± 3.22

240.09 ± 2.24

Iodine value

83.85 ± 0.64

85.36 ± 1.20

Peroxide value

58.24 ± 2.32

43.90 ± 2.20

Ester value

255.48 ± 4.10

238.36 ± 3.15

Unsaponificable matter (%)

2.09% ± 0.36

2.37% ± 0.12%

Reichert-Meissel value

3.631 ± 0.22

2.54 ± 0.31

Acetyl value

17.09 ± 0.64

13.63 ± 0.45

Cholesterol value (%)

17.46% ± 1.15%

13.79% ± 0.37%

Values are given as mean ± S.D. of triplicate experiments
Table 3: Chemical properties of the lipids of Pangasius pangasius and Pangasius sutchi.