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Articles by H. Ziaeian
Total Records ( 1 ) for H. Ziaeian
  H. Ziaeian , S. Moini and S. Jamili
  Amino acid and Unsaturated Fatty Acid (UFA) contents of long tail tuna (Thunnus tonggol) roe and their changes were investigated during 9 months of frozen storage at -18°C. These analyses were performed immediately after the freezing, then after 3rd, 6th and 9th months of cold storage at -18°C. Numbers 10 poly unsaturated fatty acids (PUFAs) and 8 monounsaturated fatty acids (MUFAs) were identified. After 9 months of cold storage, these compounds reduced from 34.55 and 27.78% to 24.62 and 25.62%, respectively. The most abundant UFAs in the fresh and frozen roes were C16:1, C18:1, C20:5(n-3), C22:5(n-3) and C22:6(n-3). The results showed that n-3 and n-6 fatty acids in fresh roe were 32.75 and 1.61%, respectively, which decreased to 23.41 and 1.09%, respectively, after 9 months of cold storage. The most abundant amino acids in long tail tuna roe were lysine, histidine, aspartic acid and leucine. According to the results, the amounts of Essential Amino Acids (EAA) and nonessential amino acids (NE) were 104.78 and 75.61 mg g-1, respectively that reduced to 78.25 and 61.40 mg g-1 at the end of storage period. Moreover, the amino acid compositions for fresh roe showed a relatively higher ratio of EAA/NE in comparison to frozen samples after 9 months of cold storage. These ratios were 1.38 and 1.27, respectively. These findings are showing that Thunnus tonggol can be a rich source of n-3 fatty acids and Essential Amino Acids (EAA) for human health.
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