• Title/Summary/Keyword: salmon

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A Study on the Comparison of Flatfish and Salmon Consumption Patterns in Twenties -Focus Group Study- (20대 소비자의 광어·연어 소비성향 비교에 관한 연구 -표적집단면접(FGI)을 중심으로-)

  • Kim, Ji-Ung;Park, Ji-Hyun;Kang, Hyo-Seul
    • The Journal of Fisheries Business Administration
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    • v.50 no.3
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    • pp.1-15
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    • 2019
  • The purpose of this study is to analyze the differences by comparing consumption tendency of the Flatfish and Salmon using focus group interview (FGI). The FGI was conducted on university students in their 20s, with a total of 38 respondents surveyed in seven focus groups. Flatfish was recognized as a food in the form of popular sliced raw fish and had customer image that fit for middle-aged men in their 40s and 50s while eating with alcohol. 20s were perceived to be out of date with their age group as flatfish was considered old fish that did not match their age. In addition, they felt low accessibility to flatfish. Salmon was perceived by 20s as a food with a higher appeal than flatfish. Salmon has been creating a brand identity in their 20s and 30s for fashionable and trendy food that appealed to younger generations. They considered characteristics of salmon high in intangible value, such as something sophisticated, trendy, and beautiful. 20s consumed various forms of salmon including salmon sushi, salmon bowl, and salmon fillet, and they perceived it as a psychologically close food that can be easily accessible. In this study, the color of species (orange color of salmon), accessibility, restaurant image, and social media exposure were found to influence the consumption patterns of two species.

Relationship between Migratory Timing of Salmon (Oncorhynchus keta) into the Wangpi River and Coastal Environment of the Mid-eastern Coastal Water of Korea (동해 중부 연안에서 연어(Oncorhynchus keta)가 왕피천으로 이동하는 시기와 연안 환경간의 관계)

  • Kim, Beom-Sik;Jung, Yong-Woo;Jung, Hae-Kun;Lee, Chung Il
    • Journal of Environmental Science International
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    • v.30 no.12
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    • pp.1067-1079
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    • 2021
  • The coastal water is a space where salmon (Oncorhynchus keta), critical energy-conveying mediator, stay to adapt to different environments while traveling between ocean and river ecosystems for spawning and growth. The mid-eastern coast of Korea (MECW) is the southern limit of salmon distributed in the North Pacific Ocean. Understanding the distribution and migration characteristics of salmon in the MECW is important for the prediction of changes in the amount and distribution of salmon related to changes in the future marine environment. We analyzed the relationship between the salmon migratory timing ascending the Wangpi river and change in vertical seawater temperature and tidal elevation. Overall results highlight that (1) Salmon began to ascend the river when the sea surface water temperature (SST) decreased below 20℃; (2) The number of salmon ascending the river increased when the temperature difference between the upper and lower layers decreased, but decreased when the temperature difference was higher than 5℃; (3) The number of salmon ascending the river peaked, when the SST was 18℃-19℃ and sea levels rose at high tide. This study provide important insight into predicting changes in the ecosystem energy circulation through climate change at its southern distribution limit.

Food Components of Coho Salmon and Rainbowtrout (은연어와 무지개 송어의 식품성분)

  • 김경삼;최영준
    • The Korean Journal of Food And Nutrition
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    • v.6 no.2
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    • pp.73-80
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    • 1993
  • In order to examine food components of coho salmon and rainbow-trout, We analyzed the composition of protein, amino acids and total lipids. The coho salmon muscle contained about 19.3% of protein with the composition of 29.9% in sarcoplasmic protein, 56.3oA in myofibrillar protein 12.5% alkali soluble protein and 2.6% in stroma. Those of rainbow-trout contained 34.1%, 56.4%, 8.3% and 2.9%, respectively. The sarcoplasmic and myofibrillar protein were composed of 13 subunits in coho salmon, and 16 and 15 subunits in rainbow-trout. Judging from the contents of essential amino acids, both muscle proteins were complete proteins. The most remarkable feature of free amino acids was that a large amount of dipeptide anserine was present with fairly lower levels of 1 methyl histidine, taurine, histidine, alanine and glycine in both muscle extracts. The total fatty acids of coho salmon was composed of 31.49% polyenes, 43.79% monoenes and 24.73% saturates. The composition of total fatty acid of coho salmon muscle was not different from that of rainbow-trout muscle.

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Hormonal Induction of Ovulation in the Coho Salmon, Oncorhynchus Kisutch (은연어, Oncorhynchus kisutch의 호르몬에 의한 산란유도)

  • 박인석;정의영;홍경표
    • Journal of Aquaculture
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    • v.10 no.4
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    • pp.485-486
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    • 1997
  • The effectiveness of intraperitonial injections of human chorionic gonadotrpin(HCG) follwed 4 days later by either HCG, salmon pituitary extract or des-GLY10[D-Ala6] LHRHa-ethylamide on ovulation of the coho salmon, Oncorhynchus kisutch, were incestigated and the results were discussed.

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A Study of Salmon Oil Type Analysis by FT-IR and Carbon Isotopes Ratio (FT-IR과 탄소동위원소 분석을 통한 연어유의 구분에 관한 연구)

  • Cho, Eun-Ah;Cha, Yun-Hwan;Lee, Young-Sang
    • The Korean Journal of Food And Nutrition
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    • v.25 no.4
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    • pp.968-973
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    • 2012
  • This study analyzes the structure types of salmon oil to evaluate the purity of salmon oil products based on the 38 different types of imported salmon oil products distributed in the Republic of Korea. The major types of omega-3 foods in the salmon oil are ethyl ester (EE) and triglyceride (TG). If the salmon oil contained potential contaminants and was processed in order to remove it, EE type omega-3 fatty acids are found in concentration. This provides a good guide in assessing if products were made with EE type ingredients or re-esterified contaminated materials. The results of the FT-IR analysis showed significant difference in the C=O, C-O band positions in TG and EE. There were 19 TG type products and 19 EE type products. The analysis of carbon isotope ratio was performed on the types of TG and EE. There were different properties in the 19 TG type products. In one product, the carbon isotope ratio was -25.15 and the other 18 products showed -22.15~-23.96. The carbon isotope ratio of all 19 EE type products showed -21.91~-23.74. The results of the TLC analysis showed similar results with FR-IR. The re-esterified TG form was not detected in the TG type products, confirming that the TG type products contained natural salmon oil. This study aimed to provide the basic material in classifying the types of natural salmon oil and re-esterified salmon oil, by analyzing the pattern and proportion of FT-IR spectrum, carbon isotope ratio, and TLC.

Effect and Tolerability of Nasal Spray of Salmon Calcitonin in the Relief of Pain due to Bone Metastasis (전이성골암에 의한 통증에 대한 Salmon Calcitonin($Miacalcic^{(R)}$) 비강분무의 효능 및 안정성)

  • Lee, Soo-Yong;Jeon, Dae-Geun;Lee, Jong-Seok;Kim, Sug-Jun;Hong, Seok-Il;Choi, Soo-Yong;Jang, Jin-Dae
    • The Journal of the Korean bone and joint tumor society
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    • v.2 no.1
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    • pp.72-77
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    • 1996
  • Metastaic bone tumors are usually accompanied with severe pain. The treatment modalities for this pain are so variable that patients are sometimes afraid of using them. Salmon calcitonin has a function to increase beta-endorphines followed by increasing the blood level of prostaglandin and thromboxan A2, which results in analgesic effect. This drug also has been known to decrease bone resorption. There were a few reports that parenteral use of salmon calcitonin decrease the pain from metastatic bone tumor. We wanted to know the effectiveness and tolerability of nasal spray of salmon calcitonin in relieving bone pain with metastatic tumor. We analyzed the effectiveness in the aspects of pain, sleep, performance status, mobility, supplementary analgesic use. The biologic effect of salmon calcitonin was analysed with CBC, Ca/P, BUN/Cr, uric acid. Simple radiography, alkaline phosphatase, osteocalcin, pyrilink-K were used as parameters for bone change. Eighteen cases of metastatic bone tumors took nasal spray of salmon calcitonin($Miacalcic^{(R)}$, 200IU/day) for 4 weeks, to relieve bone pain. With Wilcoxon Matched-Pairs Signed Ranks Test, we could find pain decreased significantly at 3 week and mobility become improved at 4 week of salmon calcitonin use. Other parameters didn't show any significant changes. We think the analgesic effect is mainly due to effect not on the local bone lesion but on the central nervous system, and that increased dose of salmon calcitonin can induce earlier and stronger analgesic effect.

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Effects of 3,5,3'-triiodo-L-thyronine ($T^3$) on Growth of GR-transgenic Coho Salmon, Oncorhynchus Kitsutch

  • Kang, Duk-Young;Robert H. Devlin
    • Proceedings of the Korean Society of Embryo Transfer Conference
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    • 2002.11a
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    • pp.101-101
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    • 2002
  • GH-transgenic coho salmon (Oncorhynchus kitsutch) juveniles in tGH*T$_3$and tGH*PTU were fed with the diets containing 1 ug/g fish of 3,5,3'-triiodo-L-thyronine (T$_3$) and 30 ug/g fish of 6-n-propyl-2- thiouracil (PTU), respectively, to assess the effect of these drugs on the change of physiological activity, growth and survival rate in comparison with normal transgenic (tGH*C) and nontransgenic coho salmon (Wild) for 90 days. Although the daily food intakes of all transgenic (tGH)-groups were higher than Wild, the amount was reduced by exogenous PTU supply. The fred efficiencies of tGH-groups were lower than Wild, but the efficiency was reduced both by T$_3$and PTU. The survival rate of tGH-group was significantly higher than that of Wild, but there was no significant difference among tGH-groups. Although the growth of tGH-coho salmon was faster than Wild. the growth rate of transgenic salmon was increased by exogenous T$_3$, but was reduced by PTU Plasma TT$_4$levels of tGH-groups was approximately 2-fold higher relative to Wild, but there were no difference of plasma TT$_4$levels among tGH-groups. plasma TT$_3$level or tGH-coho salmon was increased by exogenous T$_3$administration, but was reduced by exogenous PTU. In addition, although plasma GH levels of all tGH-groups were higher than that of Wild, the GH level in plasma of transgenic coho salmon was increased by exogenous T$_3$and reduced by exogenous PTU. In the meantime, the transgenic fishes also displayed head, jaw and opercular abnormalities typical of the offsets of this gene construct in coho salmon, indicating that some imbalance in growth processes has been induced. However, the abnormalities of transgenic coho salmon was reduced following exogenous PTU administration.

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Property Changes of Salt-seasoned Salmon Roe during Fermentation

  • Kim Sang Moo
    • Fisheries and Aquatic Sciences
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    • v.3 no.1
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    • pp.44-48
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    • 2000
  • In order to utilize chum salmon returned in the east coast of Korea, the changes in the properties of Yeonual-jeot (salted salmon roe) fermented at different temperatures were measured for obtaining the basic data for its commercial production. Moisture content of salted salmon roe was significantly lower than raw salmon roe, while other proximate components were in the reverse. pH was constant for 56 days fermentation at $5^{\circ}C$, but decreased with fermentation Reriod at 10 and $15^{\circ}C$. The contents of amino-nitrogen and VBN were almost in constant at $5^{\circ}C$ up to 28 days of fermentation, but increased very slowly at $10^{\circ}C$ and moderately at $15^{\circ}C$. TBA value, and the numbers of total viable cells and lactic acid bacteria increased over all fermentation periods, more at higher fermentation temperatures.

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Diphyllobothrium latum infection after eating domestic salmon flesh

  • Lee, Kyung-Won;Suhk, Hyo-Chung;Pai, Ki-Soo;Shin, Ho-Jun;Jung, Suk-Yul;Han, Eun-Taek;Chani, Jong-Yil
    • Parasites, Hosts and Diseases
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    • v.39 no.4
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    • pp.319-321
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    • 2001
  • Diphyllobothrium latum infection in human is not common in Korea and only thirty seven cases have been reported since 1921. We report two cases of fish tapeworm infection after ingestion of raw cherry salmon (Oncorgynchus masou) caught in the domestic river. Among four family members who ate together raw salmon flesh six months ago, just two, mother and daughter were infected. It is our expectation that the salmon associated tapeworm infections would be enlisted as one of the major parasitic problems with the growing consumption of salmon in Korea.

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Genetic Variation in Early Survival of Chum Salmon Families with Respect to Seawater Temperature

  • Choe Mi-Kyung;Yeo In-Kyu
    • Fisheries and Aquatic Sciences
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    • v.3 no.2
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    • pp.88-96
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    • 2000
  • The present study estimated the variation of early survival of chum salmon families with respect to temperature and size after transfer to seawater. Heritability for seawater tolerance of half-sib families was also estimated at 45 days after hatching. Gametes were collected from 6 male and 18 female chum salmon to make 18 paternal half-sib families. Seawater tests were carried out at 3, 7 and $12^{\circ}C$ of $32\%$ seawater and compared with freshwater. Survival was significantly affected by seawater temperature. The highest seawater tolerance was obtained in 45-day old chum salmon at $7^{\circ}C$ seawater and the lowest seawater tolerance was obtained at $3^{\circ}C$. Overall survivals in seawater tolerance at $32\%$ varied among families. There were significant variance in fry survival among females (P=0.0001), and among males (P=0.0001). The heritabilities of survival in seawater in chum salmon were estimated to be 0.32-0.34 for the sire components at 45 days after hatching in 1998.

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