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Analysis and Evaluation of Nutritional Components in Different Tissues of Wild Sepia pharaonis

  • GAO Xiaolan ,
  • JIANG Xiamin ,
  • LE Kexin ,
  • WANG Yuan ,
  • HU Xiaopeng ,
  • FENG Xun
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  • College of Ocean, Ningbo University, Ningbo 315211, China

Received date: 2014-06-30

  Online published: 2014-12-05

Abstract

In order to evaluate the nutritive value of wild Sepia pharaonis, the nutritional components of different tissues (muscle, liver, ovary, nidamental gland and accessory nidamental gland) were determined. Ten female and 10 male wild Sepia pharaonis were randomly selected [female individual: average body length (31.37±0.32) cm, average body weight (2 173.33±141.10) g; male individual: average body length (30.97±0.74) cm, average body weight (2 476.33±117.54) g]. The contents of moisture, ash, crude protein, crude fat, and the composition and contents of amino acids and fatty acids in muscle, liver, ovary, nidamental gland and accessory nidamental gland were determined by biochemical analysis methods. Each organization was measured with 3 replications. The results showed that moisture and crude protein contents were significantly different among different tissues (P<0.05). The moisture content in 5 tissues of wild Sepia pharaonis was 60.12% to 78.33%. The crude protein content in 5 tissues of wild Sepia pharaonis was 31.47% to 77.93%, with the highest value in muscle (77.93%), followed by ovary (62.39%), accessory nidamental gland (58.62%), nidamental gland (57.64%) and liver (31.47%). The ash content in 5 tissues of wild Sepia pharaonis was 1.26% to 3.18%, and there was a significant difference (P<0.05) with exception of muscle and nidamental gland (P>0.05), with the highest value in accessory nidamental gland and the lowest value in liver. The crude fat content in 5 tissues of wild Sepia pharaonis was 2.46% to 12.82%, and there was a significant difference (P<0.05) with exception of muscle and accessory nidamental gland (P>0.05). The liver had the highest crude fat content (12.82%), followed by nidamental gland (4.80%), accessory nidamental gland (3.42%), muscle (3.14%) and ovary (2.46%). A total of 17 amino acids were identified in 5 tissues of wild Sepia pharaonis. The total amino acid content in 5 tissues of wild Sepia pharaonis was 27.68% to 77.87%, and the essential amino acid content was 13.60% to 31.80%. A total of 26 fatty acids were found, including 12 saturated fatty acids (SFA), 7 mono-unsaturated fatty acids (MUFA) and 7 polyunsaturated fatty acids (PUFA). The PUFA content was 27.48% to 54.15% of total fatty acids, and there was a significant difference between liver and other tissues (P<0.05), decreasing as nidamenta gland (54.15%), muscle (47.74%), ovary (45.50%), accessory nidamental gland (41.49%) and liver (27.48%). The contents of C20:5n-3 (EPA) and C22:6n-3 (DHA) were 6.72% to 16.03% and 12.79% to 32.20%, respectively. In all, wild Sepia pharaonis is a kind of nutrition rich cephalopods with high content of protein, low content of fat, various kinds and high contents of amino acids, and lots of PUFA, especially EPA and DHA.

Cite this article

GAO Xiaolan , JIANG Xiamin , LE Kexin , WANG Yuan , HU Xiaopeng , FENG Xun . Analysis and Evaluation of Nutritional Components in Different Tissues of Wild Sepia pharaonis[J]. Chinese Journal of Animal Nutrition, 2014 , 26(12) : 3858 -3867 . DOI: 10.3969/j.issn.1006-267x.2014.12.041

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