• Korean Journal of Fisheries and Aquatic Sciences
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• v.53 no.2
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• pp.231-236
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• 2020

The objective of the current study was to evaluate the quality characteristics (alcohol contents and antioxidant capacities) and sensory characteristics of the Korean traditional rice-based wine, Makgeolli supplemented with 5% and 10% Enteromorpha prolifera (Ep) during an 8-days cold storage at 4℃. The alcohol content in the unsupplemented Makgeolli (control) and Ep Makgeolli gradually increased from day 0 to day 8 (control, 2.05-8.03; 5% Ep, 2.15-9.03; 10% Ep, 3.15-10.07). The DPPH (1,1-diphenyl-2-picrylhydrazyl) radical scavenging activities was significantly higher in the 10% Ep Makgeolli (75.87%) than 5% Ep Makgeolli (57.34%) and control (21.91%). The ABTS [2,2'-azinobis(3-ethylbenzothiazoline-6-sulfonic acid)] radical scavenging activities were also significantly higher in the 10% Ep Makgeolli (90.85%) than 5% Ep Makgeolli (75.94%) and control (47.21%). Makgeolli supplemented with 10% Ep had the highest color, smell, taste, and overall acceptance scores. The current study suggest that Makgeolli supplemented with 10% Ep could be potentially developed because of its high antioxidant properties and good consumer acceptance.

• Fisheries and Aquatic Sciences
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• v.10 no.4
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• pp.171-178
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• 2007

We analyzed the compositions of proximate and total fatty acids in the reproductive organs of male (testis, vas deferens, seminal vesicle, and spermatophore sac) and female (ovary, oviduct, oviducal gland, and nidamental gland) common squid. The protein contents were 12.1-22.7 and 13.2-19.4% for males and females, respectively, and the lipid contents were 1.0-2.7 and 2.1-8.0%, respectively. The prominent fatty acids in all reproductive organs were 22:6n-3, 20:5n-3, 16:0, 20:1n-9, 18:0, 18:1n-9, and 20:4n-6. Females had 28.6-32.0% of 22:6n-3 and 11.3-22.6% of 20:5n-3, while males had 20.8-26.8% of 22:6n-3 and 14.4-28.7% of 20:5n-3. These results indicate that the reproductive organs of both male and female squid are potential sources of n-3 polyunsaturated fatty acid.

• Journal of Fisheries and Marine Sciences Education
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• v.28 no.3
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• pp.713-726
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• 2016

This study were attempted to apply the HACCP system adopted in the dried anchovy workplace to ensure the hygiene safety of dried anchovy workplace. In this study, HACCP system procedures, including HACCP team organization, determination of critical control point(CCP), establishment of critical limits, mornitering and verification etc., were established using KFDA 12 procedures. To determine whether hazards were critical elements, we evaluated the likelihood and seriousness of each hazard element. The likelihood of residual microorganism and metal piece exceeding the acceptable limit in dried anchovy products were demonstrated to be a critical hazard element. Management of the boiling(CCP-1B) and metal detection(CCP-2P) were determined to be a critical control point. The standards for acceptable residual microorganism and metal piece were set based on relevant laws and regulations, and then the limits were adapted and established for the CCP. An HACCP plan applicable to dried anchovy workplace was established.

• Journal of Fisheries and Marine Sciences Education
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• v.29 no.1
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• pp.286-296
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• 2017

This paper conducted a simulation to research the motion of a vessel, which had the flooding accident in the Bering Sea in 2014, thereby being flooded and un-steerable. As the wind condition was very harsh, the vessel was modeled as 3D including large upper deck structures and the Fujiwara's method was used for an estimation of the effect of wind forces and moments acting on ship. In the case of wave influence, AQWA-Drift that enables considering the effects of drift force and AQWA-Naut that enables considering the effects of green water were mainly used. Basically, loading and flooding condition were equal to the accident condition but half-drained condition was also used to consider drain ability. Furthermore, both 6 DOF and 5 DOF option that Yaw motion is fixed, were utilized to compare the steerable and un-steerable condition. As a result, the author found out that what roll angle triggers green water, how often it happens, and how the vessel moves on the stormy weather condition.

• Korean Journal of Fisheries and Aquatic Sciences
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• v.49 no.3
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• pp.285-292
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• 2016

In this study, we investigated the quality characteristics of noodles supplemented with lyophilized leg-meat powder from the red snow crab, Chionoecetes japonicus (CP). The noodles were prepared by adding 0, 2, 4, 6, 8, 10% of CP on a wheat-flour basis. The ash, crude protein and crude lipid contents of noodles increased with increasing CP content. The cooked weight, volume and water absorption values of noodles decreased, whereas the turbidity increased, with increasing CP content. The L values of the noodles decreased with increasing CP content, whereas the a and b color values increased. The hardness, gumminess and chewiness values increased with increasing CP content increased, while springiness and cohesiveness showed no significant differences among the groups. In the sensory evaluation, cooked noodles with 4-6% CP had greater overall acceptability than the noodles with other CP levels.

• Korean Journal of Fisheries and Aquatic Sciences
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• v.52 no.6
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• pp.617-624
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• 2019

Dielectric barrier discharge (DBD) plasma is one of the promising next generation non-thermal technologies for food sterilization. The present study investigated the effects of DBD plasma on the reduction of most common food-borne pathogenic bacteria (Staphylococcus aureus, Bacillus cereus, Vibrio parahaemolyticus, Salmonella enterica) and sanitary indicative bacteria (Escherichia coli) in the suspension (initial inoculum of approx. 9 log CFU/mL). The bacterial counts were significantly (P<0.05) reduced with the increase in the treatment time (1-30 min) of DBD plasma in the suspension. The D-values (time for 90% reduction) of DBD plasma by first-order kinetics for S. aureus, B. cereus, V. parahaemolyticus, S. enterica, and E. coli were 17.76, 19.96, 32.89, 21.55, and 15.24 min, respectively (R²>0.90). These results specifically showed that 30 min of DBD plasma treatment in > 90% reduction of seafood-borne pathogenic and sanitary indicative bacteria. This suspension study may provide the basic data for use in seafood processing and distribution.

• Journal of Fisheries and Marine Sciences Education
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• v.28 no.6
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• pp.1801-1811
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• 2016

The purpose of this research is to grasp the present state of marine lifelong education and to provide direction for maritime industry. In this research, we first saw our country present ocean industry and the ocean lifelong education concept and definition besides formal school education to secure ocean human capital. Second, we researched about the ocean lifelong education that has been progressing by the organization, and by this, we inferred what to improve from our country ocean lifelong education. As a result, the improvement point for present ocean lifelong education of our country was first, the reflect of variety of marine related information in our country lifelong education is low, second, the learners were mostly children and teenagers, third, most of the were event education. Forth, it is good that there are a lot of experimenting programs, but most of them were experiment of ocean leisure sports and visiting the facilities, and because these are one-time thing so it was hard to secure marine citizenship or help them set their career in marine. Fifth, all facilities had similar contents for the experimenting program, and sixth, education period was concentrated on May and November.

• Journal of Fisheries and Marine Sciences Education
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• v.28 no.6
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• pp.1651-1661
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• 2016

The purpose of this study is to draw up a plan for improving working conditions of distant water fishing vessel crew in order to revitalize the declining distant water fishing industry. Land-based employment has increased as the result of industrialization, which in turn created shortage in marine crew supply for distant water fishing vessels. Pressure on increasing wages for sea farers is put on the industry for this reason, making the labour market in the distant water fishing industry tougher and tighter. Multiple issues have yet to be addressed for distant water fishing vessel crew. They suffer from excessive work compared to other industries. Crew management is another issue, as sea farers face poor labour conditions, working on board vessels in a collective way where no autonomous actions are allowed. Other issues include unqualified crew supply, increasing ratio of labour costs for crew to sales, and intensified implications of labour unions, which are as well making crew supply difficult as a whole. To this end, more well-qualified workers should take part in production operations in the distant water fishery. Both wage increase and working condition improvement should be achieved in order to strengthen motivation towards qualified sea farers. Sustainable crew supply can be achieved when working environments, gender-based working conditions, welfare are prioritized and improved as a whole.

• Korean Journal of Fisheries and Aquatic Sciences
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• v.54 no.2
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• pp.224-230
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• 2021

This study assessed the contamination levels of total aerobic bacteria, fungi, coliforms, Escherichia coli, and Staphylococcus aureus, and qualitative analysis of Bacillus cereus, Salmonella spp., Listeria spp., and Vibrio spp. in four frozen-raw sliced fishes (cuttlefish, flatfish, salmon, and shrimp) for sushi production. The total aerobic bacteria, fungi, and coliforms were 2.95-3.38, 1.96-2.88, and 0.92-1.29 log CFU/g, respectively. In particular, shrimp was highly contaminated with total aerobic bacteria (3.38 log CFU/g) and fungi (2.88 log CFU/g). Over 3 log CFU/g of total aerobic bacteria was also detected in cuttlefish, flatfish, and salmon. Less than 1-2 log CFU/g of E. coli was detected in all frozen samples. S. aureus was detected at 2.25-3.13 log CFU/g in most samples. B. cereus was qualitatively detected at 25% in most samples, except for salmon (0%). Salmonella spp., L. monocytogenes, and Vibrio spp. were qualitatively detected at 25-50% of all four samples. The microbial contamination levels determined in the current study may be potentially used as basic data to perform microbial risk assessments of frozen-raw sliced fishes.

• Journal of the Korean Society of Fisheries and Ocean Technology
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• v.48 no.1
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• pp.40-50
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• 2012

This study aims to analyze the performance of a submersible fish cage which was designed for developing an economical cage system can be applied in korean aquaculture environment easily. To analyze the performance of the designed cage a model test was carried out. In the test, inclination changes of the upper frame and mooring tensions of model cage were measured during the submerging and surfacing motion in still water and wave condition (period: 2s, wave height: 0.1, 0.2, 0.3m). As a result, in the still water condition the model cage kept horizontal balance and inclination degree of the upper frame was about $1^{\circ}$. In the wave condition, the model cage showed bilateral symmetric up-and-down motion but the average inclination degree of the upper frame was about $0^{\circ}$. When the model cage reached at a depth of 1m, the up-and-down motion of the cage was decreased by 12% compared with that of at the surface (period 2s, height 0.3m). In the same wave condition, the maximum and average line tension under the bottom position were about 8% and 11% respectively compared with that of at surface.