Abstract:

In this paper, the moisture content, lipid contents, and fatty acid composition of liver, gonad, muscle, and derma
from adult Takifugu flavidus were investigated. The male was in stage Ⅲ of ovary development, and the female was in
stage Ⅳ of spermary development. The results indicated that there was a significant difference in moisture content among
different tissues (P ＜ 0.05). For the female, the highest moisture content was observed in muscle and the lowest moisture
content in liver; for the male, the highest moisture content was observed in spermary and the lowest moisture content in
liver. Meanwhile, the total lipid contents in liver, gonad, muscle, and derma of the female were (48.87 ± 7.75)%, (11.77 ±
1.44)%, (0.50 ± 0.00)%, and (0.13 ± 0.06)%, respectively. The total lipid contents in liver, gonad, muscle, and derma
of the male were (63.13 ± 3.07)%, (1.70 ± 0.10)%, (0.43 ± 0.12)%, and (0.30 ± 0.20)%, respectively. There was a
significant difference in total lipid content among different tissues for the female and male (P ＜ 0.05), and the highest lipid
content was detected in liver, followed by gonad, and the lowest lipid content in derma. In addition, the highest relative
contents of saturated fatty acids (SFA) were shown in muscle for the female and male. The relative content of C16:0 in muscle
was significant higher than in liver, ovary, and derma. Monounsaturated fatty acids (MUFA) as the most abundant fatty
acids in liver were (46.4 ± 0.5)% and (45.7 ± 0.9)% in the female and male, respectively, higher than in gonad, muscle
and derma. The most abundant fatty acids in gonad were polyunsaturated fatty acids (PUFA) at levels of (28.6 ± 1.4)%
and (33.8 ± 1.9)% in the female and male, respectively. The relative content of ΣPUFA in ovary was significantly higher
than in liver and muscle (P ＜ 0.05), while no significant difference was found between ovary and derma (P ＞ 0.05). The
relative content of ΣPUFA in spermary was significantly higher than in liver, muscle, and derma (P ＜ 0.05). The absolute
content of fatty acids in liver was 8.75% and 10.57% in the female and male, respectively, significantly higher than in gonad, muscle, and derma (P ＜ 0.05). This research shows that Takifugu flavidus is nutritional and delicious. The liver can
be used for the development of fish oil. The liver is rich in PUFA, which can provide the basic material for the development
of cardiovascular drugs.

Key words: Takifugu flavidus, liver, gonad, muscle, derma, fatty acid