• 한국수산과학회지
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• 제40권6호
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• pp.350-355
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• 2007

The optimal substrates and reaction flavoring conditions were examined to develop pearl oyster extract (POE) flavor using the Maillard reaction under a model system. The sugar for the Maillard reaction was glucose, and the amino acid was cysteine, with glycine as the reaction substrate. A three-dimensional response surface method was used to monitor the dynamic changes of the substrates during the Maillard reaction. To enhance the flavor of POE, a two-step enzymatic hydrolysate (Brix $20^{\circ}$) was reacted with the precursors (1:1, v/v). A 2:1:1 mixture of 0.4 M glucose:0.4 M glycine:0.4 M cysteine (v/v) was selected as a suitable reaction system for the reappearance of baked potato odor and boiled meat odor, and masking the shellfish odor. The two-step enzymatic hydrolysate and selected precursors were reacted in a high-pressure reactor to optimize the reaction parameters. The optimum conditions were 150 minutes at $120\;^{\circ}C$ and pH 7.0. The pH was the most critical factor for the response of the baked potato odor and masking the shellfish odor, while the reaction time affected the reappearance of the boiled meat odor.

• Fisheries and Aquatic Sciences
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• 제12권1호
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• pp.6-15
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• 2009

Biochemical and functional properties of acid-soluble collagen (ASC) and pepsin-soluble collagen (PSC) from rockfish skin were characterized. Yield of PSC (90.0%) was higher than that of ASC (63.2%). Both ASC and the PSC consisted of ${\alpha}1$ and ${\alpha}2$ chains, and $\alpha$-cross-linked components. According to the results of hydroxylation of proline and lysine, and FT-IR, no difference between the helical structure of ASC and PSC was identified. Thermal denaturation temperature (TDT) of ASC from rockfish skin was $22.8^{\circ}C$, the same as exhibited in PSC. Both ASC and PSC were higher in water absorption capacity (WAC) and oil absorption capacity (OAC) than other vegetable proteins. According to the results of emulsifying activity (EA) and cooking stability (CS), both ASC and PSC from rockfish skin were inferior compared to the commercial emulsifier (Tween-80). The results of FT-IR suggested that the structure of PSC was slightly different when compared to that of ASC. No differences in solubility were established between ASC and PSC from rockfish skin at various pH and NaCl concentrations.

• 한국수산과학회지
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• 제39권1호
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• pp.1-8
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• 2006

For the effective utilization of tuna processing byproducts such as roes of skipjack tuna (Katsuwonus pelamis) and yellowfin tuna (Thunnus albacores) as a food resource, the roes of skipjack and yellowfin tuna were examined on food component characteristics and also compared to those of Alaska pollack (Theragra chalcogramma). The concentrations of heavy metal in both roe of the skipjack and yellowfin tuna were below the reported safety limits, therefore, these roes appeared to be safe as a raw material for food resource. The contents of crude protein were 21.4% in the skipjack tuna roe and 21.5% in the yellow fin tuna roe, which showed to be the major component in tuna roes. The prominent amino acids of total amino acids were aspartic acid, glutamic acid, leucine and lysine, and these amino acids were comprise to be 38.4-41.2% of total amino acid in both tuna roes. The total lipid content were 2.1 % in the skipjack tuna roe and 2.0% in the yellofin tuna roe. The major component of total lipid was found to be triglyceride in both tuna roes (skipjack tuna roe, 93.3%; yellow fin tuna roe, 92.0%), which was high in the compositions of 16:0, l8:1n-9, and 22:6n-3. The content of DHA in total lipid of the tuna roes (skipjack tuna roe, 29.9%; yellowfin tuna roe, 36.3%) were higher than that of Alaska pollack roe (18.1%). Based on the results of the proximate composition, mineral, amino acid and lipid characteristic, roes of skipjack tuna and yellowfin tuna showed potential as a raw material for food.

• 한국식품영양과학회지
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• 제35권10호
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• pp.1484-1490
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• 2006

진주조개 가공 부산물인 패주의 효율적 이용과 더불어 신세대 기호에 맞는 패주 스파게티 소스를 제조하고 효율적으로 이용하고자 제조 조건의 구명을 시도하였고, 아울러 이의 품질 특성에 대하여 살펴보았다. 적정산도, 색도, 점도 및 관능검사의 결과로 미루어 보아 진주조개 패주 스파게티 소스의 제조를 위한 패주의 최적 첨가량은 11%로 판단되었고, 저장성 부여를 위한 적정 살균조건은 $F_0$ 값 4분으로 판단되었다. 최적조건에서 제조 및 살균처리한 진주조개 패주 스파게티 제품의 일반성분은 시판 스파게티 소스에 비하여 수분은 낮았고, 단백질과 회분의 경우 높아 차이가 있었다. 총 아미노산 함량은 진주조개 스파게티 소스가 시판 소스보다 높았으며, 주요 아미노산으로는 aspartic acid, glutamic acid 및 phenylalanine 등이었다. 또한, 진주조개 패주 스파게티 소스의 칼슘 및 인 함량은 각각 48.5 mg/100 g 및 27.1 mg/100 g이었고 칼슘/인 비율이 1.78로, 칼슘이 흡수되기 좋은 비율로 구성되었다. 유리아미노산 총함량 및 taste value는 진주조개 패주 스파게티 소스가 시판 소스에 비하여 낮았고, 두 제품 모두 맛에 관여하는 주요 유리아미노산은 glutamic acid 및 aspartic acid로 판단되었다.

• 한국식품영양과학회지
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• 제35권7호
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• pp.919-925
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• 2006

양식 굴을 효율적으로 이용할 목적으로 6가지의 상업적 효소(Alcalase, Flavourzyme, Neutrase, Protamex, pepsin, trypsin)를 이용하여 굴 효소 가수분해물을 제조하고, 그 특성에 대하여 살펴보았다. 상업적 효소 굴 가수분해물의 항산화능 및 ACE 저해능은 모두 Protamex로 1시간동안 가수분해시킨 것이 가장 우수하였고, 이 때 이들의 $IC_{50}$값은 각각 1.16 mg/mL 및 14 mg/mL이었다. 하지만 항균성은 모든 효소 가수분해물에서 인정되지 않았다. 또한, ACE 저해능 및 항산화능은 가수분해 시간에 따른 의존성이 인정되지 않았다. Protamex로 1시간동안 처리한 굴 가수분해물의 경우 가수분해 처리하지 않은 대조구에 비하여 $29{\sim}66\;kDa$ 획분과 6.5 kDa 부근의 획분이 모두 감소하여 저분자화 하는 경향을 나타내었다.

• Fisheries and Aquatic Sciences
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• 제9권2호
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• pp.49-56
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• 2006

We evaluated changes in the nutritional composition of Mideodeok Styela clava harvested during the months of January, March, and May 2005. Glutamic acid, aspartic acid, arginine, leucine, and lysine were the most dominant amino acids present. Ratios of essential amino acids to nonessential amino acids were comparable to those of many fish species, with values ranging from 0.55 to 0.61 and 0.66 to 0.67 for muscle of Mideodeok from Geoje and Tongyeong, respectively. Mideodeok seems to be a suitable source of important fatty acids as it contains high levels of polyunsaturated fatty acids. Eicosapentanoic acid EPA; 20:5n-3 and docosahexanoic acid DHA; 22:6n-3 were the most dominant fatty acids, ranging from 20.0 to 22.3% and 16.5 to 17.9% in muscle, and 20.3 to 23.2% and 15.2 to 18.8% in tunic, respectively. The total mineral fraction of Mideodeok was 22.2-27.3% of dry matter. Sodium, calcium, magnesium, and potassium were the most dominant minerals in both muscle and tunic.

• Fisheries and Aquatic Sciences
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• 제10권4호
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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.

• Food Science and Biotechnology
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• 제16권4호
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• pp.549-556
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• 2007

The study was carried out to examine on the refiner discharge from Alaska pollock as a collagen resource by characterizing biochemical and functional properties of collagen. The refiner discharge from Alaska pollock surimi manufacturing was a good resource for collagen extraction according to the results of total protein, heavy metal, volatile basic nitrogen, collagen content, amino acid composition, and thermal denaturation temperature (TDT). TDT of acid soluble collagen from refiner discharge showed $20.7^{\circ}C$, which was similar to that of collagen from Alaska pollock muscle and was higher than that of collagen from Alaska pollock skin. TDT of acid-soluble collagen from refiner discharge was, however, lower than those of skin collagens from warm fish and land animal. Acid-soluble collagen from refiner discharge of Alaska pollock could be used as a functional ingredient for food and industrial applications according to the results of water and oil absorption capacities, and emulsion properties. In addition, if the thermal stability of the acid-soluble collagens is improved, collagen from refiner discharge from Alaska pollock could be more effectively used.

• 수산경영론집
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• 제54권2호
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• pp.15-29
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• 2023

This study aims to establish a development strategy for higher education in Indonesia's marine and fisheries sector and to present a direction for international development cooperation through evaluating policies and current problems related to higher education in marine and fisheries sector. To achieve the goals of human resources development in marine and fisheries sector, Indonesian government needs to secure non-salary expenditures to strengthen support for areas directly related to the effects of education, such as improving educational facilities, expanding scholarships, and so on. Education institution needs to develop effective teaching methods and systematic practice-based curriculum that reflects the needs of the local fishermen community and fisheries industry. In addition, it is necessary to support the supply of manpower throughout the fisheries industry. Fisheries industry needs to stop relying on the government or education institutions to secure excellent human resources and actively participate and cooperate in the education field so that excellent human resources can flow into the industry. Based on this strategy, international development cooperation for human resources development in Indonesia's marine and fisheries sector should focus on qualitative rather than quantitative expansion of higher education institutions.

• KSBB Journal
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• 제24권6호
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• pp.495-507
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• 2009

21세기에 들어서면서 해양에 대한 인식은 해양선진국들을 중심으로 하루가 다르게 변모하고 있으며, 석유 및 육상자원의 고갈의 가속화로 인하여 해양의 중요성은 점차 커져 가고 있다. 지속가능한 발전을 위해서는 해조류, 해수 등과 같은 해양자원으로부터 산업용 화학품, 신소재, 연료, 희귀금속 등의 생산을 가능하게 하는 해양화학생물산업의 개발이 절실히 필요해지고 있다. 본 글에서는 해양화학생물산업분야 중 세계적으로 각광 받고 있으며 우리나라에서도 발전 가능성이 큰 분야인 해조다당류산업, 해양신소재산업, 해양바이오연료산업, 해양제염산업, 해양심층수산업 등 다섯분야를 선정하고 이들 분야의 현황과 전망을 소개하였다. 각 분야별 소개는 산업발전 역사, 기술개발 수준, 산업화 정도를 포함하고 있으며, 국내외 산업경향과 앞으로의 발전 가능성을 조사하였다. 분석결과, 해양화학생물산업기술의 발전을 위해서는 해양생물공정 개발에 대한 적극적인 연구개발 투자와 해양생물과학자들과 생물화학공학자들간의 협력 연구가 앞으로 더 많이 필요하기는 하지만 해양화학생물산업의 미래전망은 매우 밝은 것으로 나타났다.