• Korean Journal of Fisheries and Aquatic Sciences
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• v.52 no.3
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• pp.199-208
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• 2019

The present study compared the sensory and physicochemical characterizations of Alaska pollock Theragra chalcogramma roe according to the L, M, S, 2S, KA, KB, KC, and G grades. The mean weights of the Alaska pollock roe were 81.2 g (74.1-85.7 g) in the L grade, 48.4 g (41.1-54.8 g) in the M grade, 38.6 g (33.5-45.6 g) in the S grade, 29.3 g (25.7-34.2 g) in the 2S grade, 45.7 g (41.4-50.0 g) in the KA grade, 41.4 g (37.7-46.1 g) in the KB grade, 38.3 g (36.0-42.6 g) in the KC grade, and 15.0 g (14.2-15.6 g) in the G grade. The results of the sensory (transparency, physical damage, texture, and odor) and physicochemical (moisture, amino nitrogen and volatile basic nitrogen contents, Hunter redness, and texture) evaluations revealed that, in the normal group, the quality of Alaska pollock roe was highest in the L grade followed by the M, S, and 2S grades whereas, in the cut-group order, the quality was highest in the KA grade followed by the KB, KC, and G grades. The present results suggest that the L, M, S, 2S, KA, and KB grades could be used for high-quality Alaska pollock roe products.

• Korean Journal of Fisheries and Aquatic Sciences
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• v.52 no.2
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• pp.105-113
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• 2019

The objective of this study was to investigate Alaska pollock Theragra chalcogramma roe grade distribution among blocks and its nutritional components by grade. M grade roe was predominantly distributed in blocks labeled as L and M (52.1 and 82.8%, respectively), and S grade roe was mainly found in blocks labeled as S (98.6%). Products labeled as containing KB and KC grade roe contained 77.1 and 65.5% normal roe, respectively. Among the five roe grades (L, M, S, G, and Off), total amino acid content was higher in normal roe than in abnormal roe. The major amino acids found in normal roe were leucine, aspartic acid, and glutamic acid, whereas G and Off grade roe contained leucine and glutamic acid, but not aspartic acid. The calcium, phosphorus, potassium, and iron contents of the five roe grades were within the ranges 13.0-20.0, 314.4-392.0, 124.1-157.7, and 1.7-2.2 mg/100 g, respectively. The five roe grades contained total fatty acid contents of 765-1,252 mg/100 g, with no significant differences among grades. The major fatty acids were 16:0, 18:1n-9, 20:5n-3, and 22:6n-3.

• Korean Journal of Fisheries and Aquatic Sciences
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• v.52 no.4
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• pp.334-343
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• 2019

We investigated the sanitary characteristics of Alaska pollock Theragra chalcogramma roe as a raw material based on the standards of several countries. The standards for raw materials of Alaska pollock roe for lead, total mercury, $^{134}Cs+^{137}Cs$, and $^{131}I$ were those of the South Korean Ministry of Food and Drug Safety; Staphylococcus aureus, Salmonella spp., Clostridium botulinum, methyl mercury, $^{134}Cs+^{137}Cs$, $^{131}I$, $^{239}Pu$, and $^{90}Sr$ were those of the United States Food and Drug Administration; lead, methyl mercury, inorganic arsenic, chrome, $^{134}Cs+^{137}Cs$, and $^{131}I$ were those of the Ministry of Agriculture of China; nitrite ion, $^{134}Cs+^{137}Cs$, $^{239}Pu$, and $^{235}U$ were those of the Ministry of Health, Labor and Welfare of Japan; $^{134}Cs+^{137}Cs$, $^{131}I$, $^{239}Pu$, and $^{90}Sr$ were those of Codex; and $^{134}Cs+^{137}Cs$, $^{131}I$, $^{239}Pu$, $^{241}Am$, and $^{90}Sr$ were those of the European Food Safety Authority. The results for the global standard items other than C. botulinum (lead, total mercury, methyl mercury, inorganic arsenic, chrome, $^{134}Cs+^{137}Cs$, and $^{131}I$, S. aureus, and Salmonella spp.) suggest that Alaska pollock roe is safe for use as a raw material.