• Korean Journal of Fisheries and Aquatic Sciences
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• v.25 no.6
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• pp.520-528
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• 1992

In order to establish the standard conditions for thermal sterilization of foods, a microcomputer based $F_o-value$ measuring system was developed upon the basis of the time-temperature profile in food. $F_o-value$ was calculated simultaneously from the time-temperature profile, and described as integrated lethality during the whole sterilization process. The accuracy of system was evaluated by the analysis of thermal diffusivity of the model solid food, Alaska pollack surimi. The $F_o-value$ could be measured precisely under the different sterilizing conditions as the varied time and temperature. The practical thermal diffusivities from various sterilizing conditions agreed well to the values predicted by some experimental equations suggested in the literatures. The differences were within the range of $\pm12\%$.

• Analytical Science and Technology
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• v.15 no.2
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• pp.142-148
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• 2002

They were analyzed that the levels of PCDDs/PCDFs in mackerel, walleye pollack, croaken and cuttlefish, which were mainly consumed in Korea, by high resolution gas chromatography/high resolution mass spectrometr (HRGC/HRMS). The samples measured in this study had been bought 3 sets of each fish from different 5 cities, Seoul, Chunchon, Daejon, Kwangju and Pusan. The TEQ level of PCDDs in mackerel (0.032 pgTEQ/g) was the highest. The TEQ level of PCDFs in walleye pollack (0.010 pgTEQ/g) was the lowest. The level of PCDDs was higher than PCDFs in fish.

• Korean Journal of Food Science and Technology
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• v.6 no.3
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• pp.185-187
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• 1974

Total malonaldehyde(MA) in several dried fishery products (Alaska pollack, anchovy, white bait and squid) was determined by distillation and TBA reaction. In particular, MA in a water extract of dried anchovy was fractionated into bound and free MA on a Sephadex G-10 column. Among the three elution peaks, two peaks were found to be bound MA representing 94.5% of the total MA in the water extract and free MA constituted only a minor peak.

• Korean Journal of Food Science and Technology
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• v.20 no.3
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• pp.371-379
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• 1988

To investigate on the biochemical characteristics of myofibrillar proteins between cold(pollack, salmon) and warm current fish (yellow corbina, shark), myofibrils and actomyosin were prepared, and their biological activities, effect of temperature on the myofibrillar ATPase activities and SDS-polyacrylamide gel electrophoretic patterns of myofibrils were compared. SDS-polyacrylamide gel electrophoretic analysis showed that electrophoretic patterns of myofibril vary from fish to fish. Difference in KCl concentration dependency of myofibrillar ATPase activities and ATPase activity- pH curve were found among fish species. Myofibrillar proteins from cold current fish showed higher specific activity at low temperature $(5^{\circ}C-10^{\circ}C)$ than those from warm current fish.

• 한국해양학회지
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• v.28 no.1
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• pp.35-46
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• 1993

To delineate water properties and current patterns in the spawning area of walleye pollock, hydrographic cast and current meter data collected in Strait, Gulf of alaska, were analysed, three water masses are identified in Shelikof Strait. A small amount of cold and dilute water ($<{\;}3^{\circ}C{\;}and{\;}<{\;}31.5\textperthousand$) originates from the lower Cook Inlet and flows southwestward close to the Alaska Peninsula coast. One branch of alaska coastal Current which enters the strait from the northeast comprises the main body of the upper and middle layers of the strait, and flows toward the southwest. Estimation of geostrophic baroclinic currents reveals that comparatively fast flow exists in the surface over the deepest portion of the strait, and most water exits through the southwestern entrance between Semidi and chirikof Is. On the other hand, a relatively slow-moving warm and saline ($>{\;}5^{circ}C{\;}and{\;}>{\;}32\textperthousand$) of the southwestern entrance flows northeasterly, and occupies the bottom layer in Shelikof Strait.

• Korean Journal of Fisheries and Aquatic Sciences
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• v.33 no.5
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• pp.413-417
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• 2000

The effects of film processing conditions on the water vapor permeability (WVP), the solubility of film's protein (SFP) and the soluble film's meterials amount (SFMA) were investigated to establish the conditions for preparing biodegradable and edible Alaska Pollack meal protein isolate (APMPI) film. ms of film were decreased with increasing plasticizer concentration but those were decreased with decrement of APMPI's pH values. SEPs were decreased with increasing APMPI's pH and plasticizer concentration. SFMAS were also strongly affected by plasticizer concentration and APMPI's pH. In the case of adding different plasticizers, WVP was increased in order as follows: glycerol, polyethylene glycol and sorbitol but SFMA showed inverse order.

• KSBB Journal
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• v.16 no.4
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• pp.426-429
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• 2001

To utilize sardine protein more effectively, fish meat paste products mixing sardine protein concentrate with pollack frozen meat paste at the ratio 0%, 15%, 20% and 25% were produced, and the change of firmness, sensory evaluation and the properties of amino and fatty acid were investigated. The quantity of sardine protein and it was almost gushed out around one hour at 100$\^{C}$. The firmness of the meat paste product was found as 0.54% and was better when the concentrated sardine protein was added at the ratio 15% and it was much higher than just that of pollack meat paste. In that case, total amino acid was the highest as 90.701 mg/g from the point of view of the amino acid composition. In terms of the fatty acid composition, unsaturated fatty acid of raw and boiled sardine was 61,8634% and 61.9384% each. We could find out that the high value of C$\_$20:5/ and C$\_$22:6/ of raw sardine was 7.2931% and 27.7843%, respectively.

• Korean Journal of Fisheries and Aquatic Sciences
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• v.53 no.6
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• pp.894-899
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• 2020

This study investigated the effects of inclusion of pollock oil (PO) in the diet of broodstock on the egg and larval quality of Walleye Pollock Gadus chalcogrammus. The experimental diet comprised of semi-moist pellets prepared either with or without PO (control; Con). The fish assigned to each diet were fed to visual satiation (two meals per day) for 12 weeks. Eggs spawned from both groups of fish were sampled during the spawning season (three months) and the egg and larval quality was determined. Total egg volume, fertilization, and hatchability of eggs from the PO group were higher than those of the Con group. Fatty acid composition of fertilized eggs was not affected by the experimental diet. Oleic acid, eicosapentaenoic acid, and docosahexaenoic acid content in larvae of the PO group was higher than that in larvae of the Con group. These results demonstrate the beneficial effects of including PO in the broodstock diet of Walleye Pollock, specifically on the quality of the eggs (total egg volume, fertilization, and hatchability) and larvae (fatty acid composition).

• Journal of Life Science
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• v.26 no.8
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• pp.955-962
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• 2016

Fish-meat gel is an intermediate product used in a variety of surimi-based seafood. One of the most-used raw materials of fish-meat gel is Alaska Pollock due to its high-quality meat in terms of gel strength and texture. However, increasing demand for fish-meat gel, along with overexploitation of the wild catch Alaska Pollock, has put the industry in need of low-cost sustainable alternative sources for fish-meat gel. Pagrus major (PM) is a widely aquacultured fish known for having white meat that is low in fat. The current study compares the quality of fish-meat gel prepared from aquacultured PM to that of high and mid-grade Alaska Pollock fish-meat gel. Gels were compared in terms of gel strength, texture, color, and protein pattern. Results indicated that fish-meat gels prepared from PM were superior to Alaska Pollock fish-meat gels with regard to gel strength, hardness, springiness, chewiness, cutting strength, and breaking force. In addition, although not matching in quality, PM exhibited a cohesiveness, whiteness, and expressible moisture content comparable to Alaska Pollock of both grades. Protein pattern analysis also showed that PM and Alaska Pollock fish-meat gels had similar protein profiles before and after gel preparation. Therefore, P. major is suggested as a potential substitute for Alaska Pollock in fish-meat gel production.

• (The) Research of the performance art and culture
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• no.39
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• pp.279-323
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• 2019

The musical characteristics of Fishing songs in North Korean which recorded on Anthology of North Korean Folk Songs were examined in this paper. The results are as follows. Among Fishing songs in North Korea, there are "Rowing Song," the "Song for Hauling Nets," and the "Song for Picking Up Fish" in songs related to walleye pollack fishing and in songs related to croaker fishing, the "Song for Dropping Anchor" and the "Full-Load-of-Fish Song" in songs related to croaker fishing, the "Song for Weighing Anchor," the "Song for Shaking Fish," the "Full-Load-of-Fish Rowing Song," and the "Song for Hanging Walleye Pollack" in songs related to walleye pollack fishing. There are the "Song for Setting a sail" and the "Song for catching shells" in Fishing songs in North Korea, too. In the rhythmic elements of Fishing songs in North Korea, the tempo of the "Songs for Setting a sail" is moderato, and that of the "Songs for Picking Up Fish" of songs related to anchovy or herring fishing is quite slow. "Rowing Songs"(croaker fishing) have various tempos but faster than moderato, and usually get faster and faster as time goes by. Most songs have 4/♩. time and there are some of 2, 3 or 5 time. Some songs use irregular time or 6 time overlapping 2 beats. The mode Menari is the most common tonal system used in fishing songs of North Korea. And the mode Susimga, the mode Changbutaryeong, the mode Nanbongga, and the mode Odolttogi are also used in the tonal system of Fishing songs in North Korea. There are shoutting intonations that have indefinite pitch, too. Modulation or interaction by the mode Changbutaryeong appeared in songs of the mode Menari. There is a tendency to favor a certain tonal system by category. Responsorial form is mostly used, but in the most cases, they were sung in solo. In responsorial songs, several calling songs overlap with the responding songs. Durchkomponiert form is sung by antiphon or in solo, but the case sung in solo originally seems to have been sung by antiphon or unison, if we consider the procedure of the work. The "Song for Picking Up Fish" of Seonbong-gun of North Hamgyeong Province and Yangyang-gun of Gangwon Province, the "Full-Load-of-Fish Song-Bongjuktaryeong" of Jeungsan-gun of South Pyeongan Province and "Full-Load-of-Fish Song-Baechigisory" of Taean-gun of South Chungcheong Province, "Rowing Song" of Nampo City and Ganghwa-gun of Gyeonggi Province are resembled. In neighboring areas, even if the songs of different categorys, sometimes share a same melody. In a certain category, sometimes a same melody is shared to a considerable distance. It was first identified that in anchovy or herring fishing or dybowskii' sand eel fishing, the "Song for Picking Up Fish" is widely shared in the East Sea Coast area.