The number of fisheries consumptions are increasing year by year in our country since it is well known that those seafoods benefit to health and rich in functional components. The high demand of fisheries product in Korea could not be satisfied with d...
The number of fisheries consumptions are increasing year by year in our country since it is well known that those seafoods benefit to health and rich in functional components. The high demand of fisheries product in Korea could not be satisfied with domestic production, hence there is an influx of imported fisheries products from other countries, especially in form of frozen seafoods. The frozen seafoods were commonly treated with ice glaze to preserve its quality and for distribution purposes. However, the weight after removing ice glaze could be shown as a low weight compared to that of raw material. The aims of this study were to investigate the main imported frozen seafood, such as frozen shrimp (F-S), frozen whip-arm octopus (F-WAO), frozen webfoot octopus (F-WO), frozen largehead hairtail (F-LH), and frozen small yellow croaker (F-SYC), in term of distribution condition, price, and weight in processing forms. We also assessed the error based on displayed weight on its packaging. In the end we would like to provide suggestion how to correct of the error and solution for manufacturing such product. The product that being assessed were: F-Ss in forms of individually quick frozen (IQF) and block, F-WAO and F-WO in form of block, while F-LH, and F-SYC were in form of bulk. The frozen seafoods were imported from China, Viet Nam, Thailand, Indonesia, India, and Malaysia. This study covered about 68 types of samples which displayed weight as minimum weight (250g, 400g, 3kg, 7.5kg, etc.) and period of shelf-life for 6 months, 9 months, 12 months, 15 months, 24 months, and 36 months. The amounts of ice glaze on frozen seafoods prepared in this experimental (6.1-8.4% for IQF F-S, 6.8-8.8% for block F-S, 6.2-7.2% for block F–WAO, 10.0-18.5% for block F-WO, 6.2-7.2% for bulk F-LH, 4.2-7.2% for bulk F-SYC) were high compared to those of reports, while, low compared to those of commercial frozen seafoods. The error rates of the net weight to the content weight, which was obtained after removing glaze of the frozen seafood prepared by floating the frozen pan on running water for 10-20 seconds before separating from pan, were 0-1.6% for IQF shrimp muscle, 0-2.4% for block-shaped F-S, 0-2.3% for block-shaped F-WAO, 1.2-2.4% for block-shaped F-WO, produced with fresh webfoot octopus, and 0.5-1.0% for bulked F-SYC. The net weight-contained frozen seafoods could be produced by washing/dewatering the raw material, weighing [for the case of IQF-shaped shrimp muscle, block-shaped F-S and F-WO, block-shaped F-LH(produced with fresh webfoot octopus) and F-SYC, should be weighed to the fresh seafood in accordance with the net weight], panning, freezing, depanning by floating the frozen pan on running water for 10-20 seconds before separating from pan, glazing and packaging.