• 한국식품영양학회지
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• 제36권6호
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• pp.561-571
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• 2023

The aim of this study was to determine the quality characteristics of bread with 2%, 4%, 6%, and 8% cuttlefish ink added. The pH of the dough decreased as the addition percentage increased, and the addition of 8% was the lowest. The pH of the bread and the fermentation expansion power of the dough decreased as the addition percentage increased. Moisture and ash content were positively correlated with the addition percentage, and the crude protein and crude ash content were negatively correlated. As the addition percentage increased, the color of the bread became darker, and the bread volume decreased. The inside and outside color of the bread also decreased as the addition percentage increased. The volume and specific volume of bread decreased as the addition percentage increased. The amino acid analysis indicated glutamic acid was the largest, free amino acid analysis pointed out aspartic acid the highest. The springiness, cohesiveness, gumminess, brittleness, and hardness of the bread were positively correlated with the addition percentage. Overall, it seems possible to develop bakery items using cuttlefish ink as a functional ingredient.

• Fisheries and Aquatic Sciences
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• 제17권3호
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• pp.361-367
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• 2014

Cuttlefish Sepia esculenta are commercially important in Korea. Assessments of their biomass currently depend on fishery-landings data, which may be biased. Towards fishery-independent acoustic surveys of cuttlefish, target strength (TS) measurements at 70 and 120 kHz were made of 23 live cuttlefish, in early May 2010. The fish were caught by traps in the inshore waters around Geojedo, Korea. The TS were measured using split-beam echosounders (Simrad ES60 and EY500, respectively). The cuttlefish mantle lengths (L) ranged from 15.6 to 23.5 cm (mean L=17.8 cm) and their masses (W) ranged from 335 to 1020 g (mean W=556.1 g). Their mean TS values at 70 and 120 kHz were -33.01 dB (std=1.39 dB) and -31.76 dB (std=2.15 dB), respectively. The mean TS at 70 kHz was 0.17 dB higher than the TS-length relationship resulting from a least-squares fit to the data ($TS=24.67{\log}_{10}L(cm)-64.03$, $r^2$ = 0.52, N=23). The mean TS at 120 kHz was 0.45 dB higher than the fitted TS-length relationship ($TS=40.59{\log}_{10}L(cm)-82.96$, $r^2$ = 0.58, N=23). The differences between the mean TS values and an equation regressed from all of the TS measurements at both frequencies ($TS=24.92{\log}_{10}L(cm)-4.92{\log}_{10}{\lambda}(m)-22.82$, $r^2$ = 0.86, N=46) was 0.22 dB at 70 kHz and 0.31 dB at 120 kHz, respectively.

• 한국수산과학회지
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• 제53권2호
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• pp.209-217
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• 2020

The purpose of this study was to compare the model-predicted and experimentally measured target strength (TS) of golden cuttlefish Sepia esculenta cuttlebones. Ultrasonic signals used to estimate frequency-dependent TS and the speed of sound in cuttlebones were measured by pulse-echo and through-transmission techniques, using a chirp sonar system and an ultrasonic pulser/receiver system under controlled laboratory conditions. The model appeared to slightly underestimate the predicted TS values in the frequency range of 100-160 kHz. However, there was good agreement between the predicted and measured TS values in the frequency range of 160-200 kHz. The significant similarity between the model-predicted and experimentally measured TS values supports the use of the Kirchhoff-ray mode (KRM) model for acoustic scattering analysis of cuttlebones. Accordingly, we concluded that the KRM model can be used as a tool to evaluate the frequency-dependent variability of TS due to changes in golden cuttlefish swimming depth.

• Fisheries and Aquatic Sciences
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• 제15권4호
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• pp.283-291
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• 2012

This study examines the optimal fractionation method and conditions for the isolation of endoprotease- and exopeptidase-active fractions from crude extracts of cuttlefish hepatopancreas (HP) using four fractionation methods: ammonium sulfate fractionation (ASF), polyethylene glycol fractionation (PGF), ion exchange chromatography (IEC), and gel filtration chromatography (GFC). Total endoprotease activity highest in the fraction II (concentrate of fractions 34-42; 842.60 U) of GFC, followed by fraction III (40-60% ammonium sulfate fraction; 670.25 U) of ASF, fraction I (concentrate of fractions 8-12; 436.89 U) of IEC, and fraction II (10-20% polyethylene glycol; 307.31 U) of PGF. Total exopeptidase activity of these fractions was highest in fraction II (2,704.70 U) of GFC, fraction III (2,110.50 U) of ASF, fraction III (1,605.60 U) of PGF, and fraction II (concentrate of fractions 38-44; 1,196.22 U) of IEC. These results showed that fraction II of GFC had the highest activity toward both exopeptidase and endoprotease, with exopeptidase activity being 3.21 times higher than of endoprotease. These results suggest cuttlefish HP could be used as a potential source for the extraction of exopeptidase, an enzyme capable of catalyzing the cleavage of N- and C-terminal amino acids in polypeptides, Like endoprotease, the most efficient method for separating exopeptide-active fractions was GFC.

• 한국양식학회지
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• 제5권2호
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• pp.157-165
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• 1992

양어 사료에 피드오일을 첨가하면 사료 효율이 향상된다. 나일틸라피아가 요구하는 필수 지방산의 종류를 알아보기 위하여 대두유 및 옥수수유 등의 식물유 및 오징어 간유, 어유를 사료에 첨가하고 사육하여 다음과 같은 결과를 얻었다. n-6 계열이 풍부한 식물유를 투여 한 실험구가 n-3 계열의 어유를 투여한 실험구 보다 성장이 좋았으며 그 중에서도 대두유 첨가구가 가장 양호하였다. 총 지질중의 20 : 3n-9의 수준은 유지의 종류에 따라 현저한 차이는 없었으나 극성 지질중의 20 : 3n-9의 수준은 어유 및 오징어 간유 보다는 식물유구에서 낮게 나타났다. 틸라피아 사료에 첨가하는 지질로서는 n-6 계열을 많이 포함하는 것이 적당할 것으로 나타났다.

• 한국세라믹학회지
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• 제47권3호
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• pp.244-248
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• 2010

Porous calcium phosphates were successfully fabricated by using a cuttlefish bone. The cuttlefish bone, which is composed of $CaCO_3$, showed a special porous microstructure containing uniform-sized voids. In this study, the pre-forms infiltrated distilled phosphoric acid were sintered at $1200^{\circ}C$ in an air atmosphere. The porous microstructure of the pre-forms was kept their original pattern after sintering with a synthesis of calcium phosphate. The obtained porous calcium phosphate, sintered at $1200^{\circ}C$ for 3 h at 17% concentration of phosphoric acid, showed uniform open pores of 150 ${\mu}m$ in size and $\beta$-TCP phase in the XRD patterns. Above 16% concentration, CaO phase, derived from the decomposition of $CaCO_3$, decreased gradually in the sintered samples, and the measured Ca/P ratios of the samples prepared from 16% and 18% concentration were 1.67 and 1.43, which are close to stoichiometric HA (1.66) and $\beta$-TCP (1.50).

• 한국식품저장유통학회지
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• 제19권5호
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• pp.774-782
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• 2012

본 연구는 가정에서 쉽게 구할 수 있는 재료인 요구르트와 비타민 C를 사용하여 갑오징어 김치를 담그고, 발효기간에 따른 특성을 조사하여 김치의 맛이나 가식기간에 미치는 영향을 예측해 보고자 하였다. 발효기간 동안의 수분, 조지방 및 조회분 함량의 변화는 모든 시료 간에 큰 차이를 보이지 않았다. 그러나, 갑오징어를 첨가한 김치 실험군에서 갑오징어를 첨가하지 않은 대조구보다 높은 조단백질 함량을 보였고, 요구르트를 첨가한 갑오징어 김치의 조단백질 함량은 발효기간 동안 꾸준히 증가하는 경향을 보였다. 발효가 진행됨에 따라 모든 시료구의 pH 값은 공통적으로 감소하는 경향을 보였고, 요구르트와 비타민 C를 각각 첨가한 갑오징어 김치의 pH 값은 대조구 및 갑오징어 김치보다 천천히 감소하는 경향을 나타내었다. 산도는 김치가 숙성됨에 따라 전체 실험구에서 높아지는 변화를 보였으며, 숙성 21일째까지는 대조구가 높은 값을 나타내었고, 21일 이후부터는 요구르트와 비타민 C를 각각 첨가한 갑오징어 김치 실험군이 대조구보다 높았다. 총균수는 발효가 진행됨에 따라 전 실험군에서 증가하기 시작하여 21일째에 최대값을 보인 후 다시 감소하는 양상을 보였고, 요구르트와 비타민 C를 첨가한 갑오징어 김치의 경우는 발효기간내내 대조구 및 갑오징어 김치보다 낮은 총균수를 나타내었다. 또한 Leuconostoc sp. 균수는 전 실험구에서 적숙기인 21일째에 최대값을 보인 이후 다시 감소하는 양상을 보였고, 요구르트와 비타민 C를 첨가한 갑오징어 김치가 대조구와 갑오징어 김치보다 높은Leuconostoc sp. 균수 값을 나타내었다. Lactobacillus sp. 균주는 발효가 진행될수록 대조구에서는 계속 증가하는 양상을 보였고, 적숙기인 21일 이후부터는 대조구의Lactobacillus sp.의 균수가 갑오징어 김치 시료군보다 증가하는 양상을 나타내었다. 관능평가 결과로는 요구르트와 비타민 C를 첨가하여 제조한 갑오징어 김치가 비린 향미의 항목을 제외하고는 조직감, 신맛, 숙성된 맛, 종합적인 선호도의 항목에서 가장 좋은 점수를 얻었다. 이상의 결과는 김치제조 시 쉽게 구할 수 있는 재료인 요구르트나 비타민 C를 첨가하여 김치를 담금으로서 김치의 관능에 좋은 영향을 줄 수 있으며, 가식기간 또한 연장될 수 있음을 보여주었다.

• 한국환경보건학회지
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• 제24권3호
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• pp.87-91
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• 1998

The removal effect of phosphate by sludge from wastewaters prior to discharge into natural waters is an essential measure to prevent eutrophication in receiving waters. There is need for developing low cost, easily and abundantly available, efficient adsorbents for the removal of phosphorus (P as orthophosphate) during the tertiary treatment of wastewaters. The adsorbent carbon which is prepared with fisheries wastes on a laboratory scale has been used to evaluate its performance for phosphate adsorption. Phosphate removal increase with increasing adsorbent dose and temperature, but shows no changes at an adsorbent dose over 8 g/l.

• 한국환경과학회지
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• 제4권2호
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• pp.195-220
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• 1995

A lot of sludges occur during an activated sludge treatment process of the washing wastewater and by-product waste in the cuttlefish processing manufacture. The sludges give also out a bad smell, and their amicable reclamation is very difficult because of the limited area of the filling-up. To reduce the heavy weight and large volume of the sludges, they was burning up. After the burning up at 350t for 2hrs the weight(volume) of the sludges were reduced to 5% level of the initial value. In contents of the bad heavy metals for human after the burning up, cadmium and lead metal were slightly detected, while mercury and the bad others not detected.

• 한국식품과학회지
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• 제26권4호
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• pp.417-421
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• 1994

수산 미이용자원의 순차 용매추출물에 대한 항산화물 존재 여부 검색결과, 모자반의 경우 $IC_{50}$이 물추출구에서 $500{\mu}g/ml$, 에테르 추출구 및 메탄올 추출구에서 각각 $133,700{\mu}g/ml$로 나타났으며, 참빗풀은 에테르, 아세톤, 메탄올 추출구에서 $IC_{50}$이 각각 30, 110 및 $200{\mu}g/ml$로 나타나 대상 시료중 가장 항산화 효과가 좋았다. 미이용 수산동물 중에서는 오징어먹즙만이 물 추출구와 메탄올 추출구에서 $IC_{50}$이 각각 $390,\;100{\mu}g/ml$로 나타날 뿐 큰 항산화효과를 보이는 시료나 추출구간은 없었다. 대상 수산 미이용 동 식물에 있어서 에테르와 같은 비극성 용매 추출구에 강한 항산화 물질이 많이 용출되어 존재해 있는 것으로 나타났다.