• 생명과학회지
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• 제12권1호
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• pp.16-25
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• 2002

다시마의 조체 연화와 유용성분 추출 방법을 검토하여 다시마를 이용한 엽상 및 분말차 제조를 검토하였다. 다시마 엽체 연화를 위하여 0.05% 초산용액의 9$0^{\circ}C$에서 0.5시간, 0.2% 제2인산칼륨용액의 10$0^{\circ}C$에서 0.5시간, 0.3% 탄산나트륨용액의 10$0^{\circ}C$에서 0.5시간 자숙처리하는 것이 적당하였다. 그리고 0.05% 초산용액의 9$0^{\circ}C$서 0.5시간 자숙하여 엽체를 연화시키고 조미첨가제로서 0.5% glutamic acid, 3% glycine, 5% sorbitol 및 1.5% soy sauce를 다시마 중량에 대하여 10% 첨가하여 약한 불에서 1시간 졸여서 제조한 엽상차가 관능검사에서 씹힘성, 단맛, 향 및 색택이 가장 우수하게 평가되었다. 엽상차 액의 유리아미노산 함량은 alanine이 707.2 $\mu$mo1/100 $m\ell$로 가장 많이 함유되어 있었으며, 그 다음으로 glutamic acid가 343.6 $\mu$mo1/100 $m\ell$이었고, 무기성분은 Na이 49.378 ppm으로 가장 많았으며, 다음으로 Mg 10.72 ppm, K 10.56 ppm 및 Ca 6.55 ppm 순이었다. 11$0^{\circ}C$에서 1.5시간 가압처리한 다시마 분말의 용출액이 점도가 가장 낮아 1.73 cP이었고 총고형물 및 회분함량은 가장 높아 각각 2.22% 및 1.48% 이었다. 여기에 0.05% glutamic acid, 5% glycine, 5% glucose 및 4% sodium chloride를 첨가하여 분말차로 제조하였고, 분말차 2g을 9$0^{\circ}C$에서 10분간 우려낸 물의 유리 아미노산 중 glycine이 222.04 $\mu$mo1/100 $m\ell$로 가장 많이 함유되었고 그 다음으로 glutamic acid는 208.58 $\mu$mo1/100 $m\ell$이었다. 그리고 무기성분으로는 Na이 104.24 ppm으로 가장 많은 양이 함유되어 있었으며, 다음으로 Mg 14.31 ppm, K 9.68 ppm, Fe 2.36 ppm, Ca 2.00 ppm, Zn 0.13 ppm, Cu 0.10 ppm 및 Mn 0.01 ppm의 조성을 보였다.

• 생명과학회지
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• 제9권4호
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• pp.439-452
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• 1999

This study was designed to investigate the effects of sea tangle (Laminaria japonica) extract and fucoidan components on anti-aging action. Sprague-Dawley(SD) male rats (210$\pm$5g) were fed experimental diets Dasi-Ex group: sea tangle extract powder of 4.0% added to control diet; Fuco-I, II and III groups: funcoidan powder of 1, 2 and 3% added to Dasi-Ex group for 45 days. Hydroxyl radical (.OH) formations were significantly inhibited (10-20% and 25-30%) in serum and brain mitochondria of Dasi-Ex and Fuco-I, II and III groups compared with control group. Significant differences in .OH formations of brain mitochondria in Dasi-Ex and Fuco-I groups could not be obtained, but.OH formations of brain microsomes resulted in a significant decrease (15-20%) in Fuco-II and III groups compared with control group. Basal oxygen radical (BOR) formations were significantly decreased about 10% and 13-15% in brain mitochondria of Dasi-Ex and Fuco-I group, and Fuco-II, III groups, and also decreased about 10% and 15-20% in brain microsomes of Dasi-Ex and Fuco-I groups, and Fuco-II, III groups. LPO levels of brain mitochondria and microsomes were significantly inhibited about 10% in Dasi-Ex and Fuco-I, II groups and 15% in Fuco-III groups. Oxidized proteins (>C=O) were significantly inhibited about 10% in serum of Dasi-Ex and Fuco-I, II, III groups and brain mitochondria of Dasi-Ex group, while remarkably inhibited (30~35%) in brain mitochondria of Fuco-I, II and III groups. Nitric oxide (NO) levels were significantly inhibited (12~15%) in serum of Fuco-I, II and III groups, but there no significant difference in serum NO levels of Dasi-Ex group. Superoxide dismutase (SOD) activities were remarkably increased (30~ 60%) in serum of Fuco-I, II and III groups, but there were no significant differences in SOD activities in serum of Dasi-Ex group. Catalase (CAT) activities were significantly increased about 20% in serum of Dasi-Ex and Fuco-I, II, III groups. Mn-SOD activities in brain mitochondria were significantly increased about 17% in Dasi-Ex group, while remarkably increased 26~36% in Fuco-I, II, III groups. Cu,Zn-SOD activities in brain cytosol were dose-dependently of fucoidan increased 10%, 12% and 18%, respectively, compared with control group. These results suggest that anti-aging effects of fucoidan may play a pivotal role in attenuating a various age-related changes such as chronic degenerative disease and senile dementia.

• 한국수산과학회지
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• 제36권4호
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• pp.340-345
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• 2003

In order to choose the manufacturing method for extracting alginates from sea tangle, Laminaria japonica, three methods were applied. In Method I, alginates were extracted with NaOH solution from sea tangle powder and extracted alginates were precipitated and converted to alginic acid by $CaCl_2$ and HCI solution. Then alginic acid was converted to sodium alginates with $Na_2CO_3$ solution. Sodium alginates were precipitated with methyl alcohol and were resolved with hot water and this step was repeated three times. Method II was same to Method I except final step including that sodium alginates were precipitated and washed with methyl alcohol three times. Method III included that sodium alginates were extracted with $Na_2CO_3$ solution from sea tangle powder then sodium alginates were precipitated and washed with methyl alcohol three time. Extracting time increased with Increasing extracted alginates amounts but increasing rates were below $0.4\%/h.$ Alginates amounts recovered by Method III showed above 2 times more to those by Method I and II. Extracting time increased with increasing ash amount of sodium alginates but increasing rates were below $0.1\%/h.$ and that of sodium alginates extracted by Method III showed higher value $(5\%)$ than those by Method I and II. In the sodium alginates prepared by Method III, the amount of ash in alginates dried by air was $34.4\%,$ that by vacuum freeze drying was $47.8\%.$ Extracting time increased with decreasing average molecular weight (MW) and degree of polymerization (DP) of sodium alginates, MW and DP of alginates prepared by Method III were higher than those by Method I and II In same extracting time. Extracting time increased with decreasing rate of apparent viscosity change (SAV) of alginates solution, and SAV of alginates prepared by Method III showed higher value than those by Method I and II in same extracting time. SAV of alginates dried by air was higher than that by vacuum freeze drying. Relating equation among SAV MW and DP were MW = 60.066 (SAV) -93.950, DP =309.760 (SAV) -485.084 and MW = 0.914 (DP)+0.213.

• 한국수산과학회지
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• 제48권3호
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• pp.329-336
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• 2015

We examined the effect of substituting squid meal and macroalgae with soybean meal in a commercial diet on the growth and body composition of juvenile abalone Haliotis discus hannai. We randomly distributed 2310 juvenile abalone into 33 rectangular plastic containers and fed them five experimental diets in triplicate as follows. The control diet (Con) consisted of 12% squid meal, 8% corn gluten and 20% soybean meal as protein source, wherein 10% ${\alpha}$-starch, 20% wheat flour, and 5% dextrin were carbohydrate source. The experimental diets, 50% squid meal (SM50), 50% squid meal and 50% macroalgae (SM50+MA50), and 100% squid meal and 50% macroalgae (SM100+MA50) were substituted with the same respective amounts of soybean meal. The fifth experimental diet consisted of the control diet plus 1% diatom powder (DP). We prepared two domestic (Domestic A and B) and two imported (China and Japan) abalone feeds. Finally, we prepared Undaria and sea tangle. We found that the weight gain of abalone fed the Con, DP, and China and Japan diets was significantly greater than that of abalone fed Undaria and sea tangle. We conclude that the substituting squid meal and macroalgae with soybean meal in abalone feed has limited benefits, but supplementing diets with 1% diatom powder is effective in improving weight gain.

• 한국식품저장유통학회지
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• 제22권2호
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• pp.190-196
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• 2015

다시마의 활용성 증대 및 다양한 만두피 가공제품의 개발을 위해 다시마 분말을 1%, 3%, 5% 및 7%로 수준으로 첨가하여 제조한 만두피의 품질특성 결과는 다음과 같다. 호화개시온도는 다시마 분말의 첨가량이 증가될수록 점진적으로 증가하는 경향을 보였다. 최고점도, $95^{\circ}C$에서 점도 및 $95^{\circ}C$에서 15분간 유지한 후의 점도는 다시마 분말의 첨가량이 증가함에 따라 낮아지는 것으로 나타났다. 만두피의 색도는 다시마 분말 첨가량이 증가함에 따라 명도(L값)와 황색도(b값)는 유의하게 감소하였으며, 적색도(a값)는 각 시료간에 유의적으로 증가되었다. 다시마 분말을 첨가한 만두피의 조리특성을 살펴보면, 대조군에 비해 첨가군이 중량, 부피, 수분흡수율 등이 모두 높게 나타났다. 만두피의 조직감은 다시마 분말 첨가량이 증가될수록 경도, 응집성, 씹힘성 및 부착성은 높아졌으며, 탄력성은 감소하였다. 만두피의 관능검사 결과, 색깔은 다시마 분말 3%와 5% 첨가군이 기호도가 높게 나타났으며, 만두피의 향미 특성은 1%와 3% 첨가군이 높게 나타났다. 만두피의 조직감은 다시마 분말 3%와 5% 첨가군이 높게 나타났으며, 만두피의 맛은 다시마 분말 3% 첨가군이 가장 좋은 것으로 평가되었다. 전체적인 기호도는 다시마 분말 3% 첨가군이 가장 높게 나타나 다시마 분말을 일정량 첨가 시 관능적 특성이 향상되는 것으로 평가되었다. 이상의 결과로 볼 때 다시마 분말 특유의 색과 맛을 가미한 다시마 만두피를 제조할 경우 다시마 분말을 3% 첨가하는 것이 만두피의 색채감 향상, 맛의 증진 및 전반적인 기호도면에서 가장 적절한 것으로 판단된다.

• 한국식품조리과학회지
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• 제24권4호
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• pp.452-459
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• 2008

The purpose of this study was to investigate the antioxidative effects of Sea tangle powder(STP) solvent extracts as well as Maejakgwa made with STP. The STP solvent extracts were added to soybean oil at a quantity of 0.05%. The solvents used for extraction were methanol, ethanol, ethyl acetate, and petroleum ether. Soybean oil without added STP was used as a negative control, and soybean oil samples containing 0.02% butylated hydroxy toluene(BHT) and $\alpha$-tocopherol were used as positive control, respectively. Each sample was stored at $50^{\circ}C$ for 30 days. The oxidation levels of these samples were determined by measuring their acid values, peroxide values, and thiobarbituric acid(TBA) values. The soybean oil samples containing the STP extracts had lower oxidation levels than both the negative control and $\alpha$-tocopherol positive control, and the sample containing the 0.05% methanol extracts had the lowest oxidation. According to the Rancimat method, the methanol extract(320 min) and ethanol extract(316 min) demonstrated longer induction periods as, compared to the control(253 min), $\alpha$-tocopherol(255 min), and BHT(309 min) samples. For the Maejakgwa, acid values increased over the storage period, however, the samples made with STP had lower values than the control group. Peroxide values increased rapidly for 30 days and then decreased. The TBA values of the Maejakgwa samples made with 3% and 9% STP were lower than those of the 15% STP sample and the control. In conclusion, the oxidative stability of soybean oil containing solvent extracts of STP and Maejakgwa made with STP were increased.

• 한국식품영양학회지
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• 제14권3호
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• pp.245-254
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• 2001

우리나라의 전통 발효식품인 고추장의 관능성 및 기능성을 더하여 품질을 향상시키기 위하여 전분질원료인 찹쌀무게에 대하여 2%. 4%, 6%, 및 8%의 다시마 분말을 첨가한 후 대조구와 함께 3$0^{\circ}C$에서 12일간 숙성시키면서 유리아미노산과 지방산 조성 acl 관능적 특성을 검토하였다. 숙정 중 대조고추장과 다시마고추장 모두에서 아미노질소는 서서히 증가하는 것으로 나타났으나 아미노질소의 경우 대조고추장에 비해 다시마 고추장에서 다소 낮게 나타났다. 숙성 30일째의 아미노질소량은 각각 171.31mg%, 172.10mg%, 174.18mg%, 185.60mg 및 161.70mg%로 최고값을 보였다 유리아미노산 중에서는 glutamic acid의 함량이 가장 높은 것으로 나타났는데 숙성 이 진행될수록 증가하였다. 또한 arginine, aspartic acid, proline, serine, leucine, lysine 도 비교적 높은 함량을 가졌다. 고추장에서 분리 확인된 지방산은 lauric acid myris-tic acid, palmitic acid stearic acid , oleic acid, linoleic acid 등이었고, 이들 중 oleic acid의 조성비율이 가장 높았고 palmitic acid가 다음으로 높았으며 stearic acid, lauric acid myristic acid의 경우 숙성 후기로 갈수록 산화되어 감소하는 경향을 보였다. 숙성 60일과 120일에 실시한 관능검사의 결과 8% 다시마 첨가구를 제외하고는 대조고추장과 비교하여 다시마 첨가구를 제외하고는 대조고추장과 비교하여 다시마 첨가가 고추장의 관능적 특서엥 영향을 미치지 않았으며 다시마 첨가수준이 높아질수록 높은 값을 나타내어 고추장에 다시마를 6% 정도 첨가하는 것이 적당하였다.

• 한국수산과학회지
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• 제37권1호
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• pp.1-6
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• 2004

In preparing sodium alginates from sea tangle (Laminaria japonica) powder using the Mexican process, alkaline extraction, conversion to alginic acid and reversion to sodium alginates were used to increase purity. The effect of hot water treatment and dialysis on measuring the average molecular weight of sodium alginates were investigated. Intrinsic viscosity and average molecular weight of sodium alginates after dialysis were higher than those before dialysis. Average molecular weight of sodium alginates treated with hot water was higher than that without. Hot treatment has little effect on the ash content of sodium alginates. Ash content of sodium alginates before dialysis were $27-30\%$ those after dialysis were $10\%.$ After dialysis, Na content was highest $(89-91\%),$ K was $11-12\%,$ Ca was $1.9\%,$ and Mg was $0.05\%.$ Ash content of alginates had little effect on average molecular weight. SAV (slope of apparent viscosity) of alginates solution after dialysis showed higher values than before. SAV of the alginates with hot water treatment were higher than without treatment.

• 한국생명과학회:학술대회논문집
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• 한국생명과학회 2001년도 10주년 기념 국제학술 심포지움 및 추계학술대회
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• pp.43-43
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• 2001

• 한국생명과학회:학술대회논문집
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• 한국생명과학회 2001년도 10주년 기념 국제학술 심포지움 및 추계학술대회
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• pp.42-42
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• 2001