• 한국식품영양과학회지
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• 제35권7호
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• pp.835-840
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• 2006

본 연구에서는 전복육질과 내장의 추출방법에 따른 추출물의 혈압강하, 항산화, 항혈전 효과에 대한 in vitro 효과를 구명하고자 하였다. 전복육질(abalone body)과 내장(visceral portion)의 80% ethanol 추출물은 ACE(angiotensin converting enzyme)활성에 대해 높은 억제효과를 나타내었으며, 전복육질 추출물의 경우 농도의 증가에 따라 증가되는 경향을 나타내었다. 그러나 내장추출물은 농도증가에 따라 큰 차이가 없는 것으로 나타났다. 수용성추출물의 ACE활성억제효과는 농도별에 따라 증가되는 경향을 나타내었으며, 육질과 내장 간에 큰 차이가 있는 것으로 나타났다. 아질산염 소거활성으로 평가한 항산활 효과는 80% ethanol 추출물의 경우, 전복육질에서 농도증가에 따라 증가된 수준을 나타내었으나 그 수치는 낮은 값을 나타내었다. 내장의 경우, 낮은 농도에서는 육질과 비슷한 수준을 유지하였으나 농도가 증가함에 따라 높은 항산화활성을 나타내었다. 수용성추출물의 항산화효과는 농도증가에 따라 증가된 수준을 나타내었으나 육질과 내장에 큰 차이는 보이지 않았다. 항혈전 효과는 80% ethanol 추출물에서 육질의 prothrombin time이 상대적으로 내장의 prothrombin time보다 높게 나타났다. 수용성추출물의 경우, 항혈전 효과가 거의 없었으며, 전복의 육질이나 내장에 따른 특별한 차이점 또한 없는 것으로 나타났다. 수용성추출물을 48시간 냉장온도에서 저장한 후의 전복육질과 내장의 ACE 활성에 대한 억제효과는 육질과 내장간에 큰 차이가 있었으나 0 time의 값과 큰 차이를 나타내지 않았다. 항산화 효과는 육질과 내장의 경우 농도증가에 따라 직선적인 증가경향을 나타내었으나, 육질에 비해 내장에서 높은 항산화능이 있는 것으로 나타났다. 전복육질과 내장의 prothrombin time은 큰 차이가 없었으며, activated partial thromboplastin time 또한 큰 차이가 없는 것으로 나타났다.

• Asian-Australasian Journal of Animal Sciences
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• 제25권11호
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• pp.1611-1616
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• 2012

The aim of the study was to evaluate the effect of sodium nitrate consumption on egg quality and quantity, and some blood parameters of native breeder hens of West Azerbaijan province. One hundred native hens were used from wk 25 to 32 of age. These birds were divided into two groups. One group was fed the control diet (CD) but the other fed the same diet supplemented with 4.2 g/kg sodium nitrate (ND). After 2 wks of adaptation, eggs were collected daily and egg mass and egg production were measured weekly for five weeks. To assess the egg quality parameters, two eggs from each replicate pen were collected for three consecutive days each week. At the end of experimental period (wk 32 of age), blood samples of 5 birds per replicate were collected from the wing vein into anticoagulant tubes. Dietary sodium nitrate didn't affect the egg production, shell stiffness, shell thickness and Haugh unit (p>0.05) but it decreased the both egg production and egg mass during the last three weeks (wks 30, 31 and 32) (p<0.05). Furthermore, a treatment effect was observed for yolk colour (p<0.05). Both the egg production and egg mass were increased over time (p<0.05). No significant treatment${\times}$time interaction was observed for egg weight, egg production and egg mass (p>0.05). No effect of time or treatment${\times}$time were observed for shell stiffness (p>0.05). Over time, shell thickness was decreased while Haugh unit increased (p<0.05). None of the blood TP and TG or the activity of ALT, AST and LDH enzymes were affected by dietary consumption of sodium nitrate at wk 32 of age (p>0.05). Sodium nitrite decreased both the TAC and TC at wk 32 of age (p<0.001). It was concluded that the lower body antioxidant capacity of nitrate fed birds resulted in the lower performance (egg weight, egg production and egg mass).

• 한국식품저장유통학회지
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• 제14권4호
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• pp.431-437
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• 2007

The primary objective of this study was to determine the effects of abalone in reducing blood pressure and increasing anti-coagulant capacity. The serum angiotensin-converting-enzyme (ACE) activities of rats on an abalone-supplemented diet did not significantly differ from the ACE levels of rats on a normal diet, at any time (before the experiment, or 1 week, 2 weeks, 3 weeks, and 4 weeks, after commencement of the abalone diet) during the experiment. This result showed that abalone-supplemented diets had no effect on the activity of ACE, which controls blood pressure. To determine if an abalone-containing diet might increase anti-coagulant capacity, both prothrombin (PT) and activated partial thromboplastin time (APTT) levels were measured. The PT levels of control rats remained constant throughout the experiment. In rats fed the abalone-containing diet, PT levels increased with time, and the increase became statistically significant after 2 weeks, when compared to pre-trial PT levels. Control rats showed no significant change in APTT levels over time. The rats fed abalone, however, showed significant differences in APTT levels. Specifically, when pre-trial APTT levels were compared with 4-week levels, and when 1-week levels were compared with 4-week levels, the differences attained statistical significance. These results indicate that an abalone-supplemented diet may inhibit blood coagulation in normal rats. The results of this study prove the inherent health value of abalone, and may encourage investment in the seafood industry. Future studies will explore other possible beneficial effects of abalone, apart from the anti-hypertension and anti-coagulant effects examined above.

• 한국수산과학회지
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• 제35권6호
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• pp.671-675
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• 2002

우렁쉥이 껍질에서 추출한 autoclave 추출구와 neutrase 추출구는 지방흡수력의 경우 대조시료인 chitin과 chitsan에 비해 떨어지는 대략 250$\~$$300\%$ 정도이었으나, 포말성은 각각 0.70과 0.67로, 포말안정성은 0.50과 0.38로 우수하였다 Autoclave 추출구 및 neutrase 추출구의 유화능은 각각 $49.2\%$와 $47.1\%$, 유화안정성의 경우 각각 $48.3\%$와 $44.8\%$ 정도였으며 특히, 색소흡착능은 각각 $85.2\%$와 $85.6\%$로 대조시료에 비해 다소 우수하였다 항혈액응고능은 모든 시료에서 hPn 저 지효과는 나타났으나 PT값은 약 14.5초로 일정하여 혈액응고저지 효과가 거의 없었다. 특히 autoclave 처리구를 DEAE-cellulose ion exchange chromatography하여 얻은 F4 (획분4)는 APTT가 75초로 가장 효과적 이 었으며, Sephadex G-100의 $F_2$가 70초 정도였다. ACE저해능은 모든 시료에서 ACE 저해효과가 있었으며, 채택된 실험방법에 따라 동일시료 경우에 있어서도 저해효과 값이 차이가 났으며, 특히 DEAE-cellulose 이온교환 처리한 $ F_4$ (획분4)가 $35.7\%$로 가장 효과적이었다.