• 제목/요약/키워드: ATPase (total, $Mg^{++}--\

검색결과 30건 처리시간 0.028초

Response of broiler chickens to diets containing different levels of sodium with or without microbial phytase supplementation

  • Akter, Marjina;Graham, Hadden;Iji, Paul Ade
    • Journal of Animal Science and Technology
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    • 제61권2호
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    • pp.87-97
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    • 2019
  • Phytate induced excessive mineral excretion through poultry litter leads to poor performance and environmental pollution. Exogenous microbial phytase supplementation to poultry diets reduce the environmental excretion of nutrient and improve bird's performance. However, excessive dietary sodium (Na) level may hinder the phytase-mediated phytate hydrolysis and negate the beneficial effects of phytase. Therefore, this experiment was conducted to investigate the effects of different concentration dietary Na on phytase activity and subsequent impact on broiler performance, bone mineralisation and nutrient utilisation. In this study, six experimental diets, consisting of three different levels of Na (1.5, 2.5, or 3.5 g/kg) and two levels of microbial phytase (0 or 500 U/kg) were formulated by using $3{\times}2$ factorial design. The six experimental diets were offered to 360 day-old Ross 306 male chicks for 35 days, where, each experimental diet consisted of 6 replicates groups with 10 birds. Along with growth performance, nutrient utilization, intestinal enzyme activity, dry matter (DM) content of litter and mineral status in bone were analysed. Dietary Na and phytase had no effect on bode weight gain and feed intake. Birds on the low Na diet showed higher (p < 0.05) feed conversion ratio (FCR) than the mid-Na diets. High dietary Na adversely affected (p < 0.001) excreta DM content. Phytase supplementation to the high-Na diet increased (p < 0.01) the litter ammonia content. High dietary Na with phytase supplementation improved ($Na{\times}phytase$, p < 0.05) the AME value and ileal digestibility of Ca and Mg. The total tract retention of Ca, P, and Mg was reduced with high Na diet, which was counteracted by phytase supplementation ($Na{\times}phytase$, p < 0.001). The diets containing mid-level of Na improved (p < 0.001) the function of Na-K-ATPase and Mg-ATPase in the jejunum. The overall results indicate that high dietary Na did not affect phytase activity but influenced the nutrient utilization of birds, which was not reflected in bird overall performance.

만성 알코올 섭취시 2-Acetylaminofluorene 투여가 흰쥐 간 미토콘드리아 ATPase 활성도와 막지질 조성에 미치는 영향 (Effect of Chronic Alcohol Feeding and 2-Acetylaminofluorene Treatment on Hepatic Mitochondrial ATPase Activity and Membrane Lipid Composition in Rats)

  • 김정희;류선영
    • 한국식품영양과학회지
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    • 제24권6호
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    • pp.867-873
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    • 1995
  • 만성적인 알코올 섭취가 미토콘드리아의 지질조성 및 ATPase 활성도에 미치는 영향을 조사하고 아울러 간의 발암물질인 2-AAF를 토여하여 간 미토콘드리아의 기능에 미치는 상호 효과를 조사하기 위하여 120~125g 숫쥐에게 열량의 35%를 알코올로 공급하여 6주간 사육하였으며 알코올 섭취 4주 후에 2-AAF를 3일 간격으로 2회 복강투여하여 실험한 결과를 요약하면 다음과 같다. 1. 체중 증가, 식이 섭취량 및 식이효율에 대한 알코올의 효과는 유의적인 차이를 보였으나, 2-AAF에 의한 유의적인 효과는 관찰할 수 없었다. 알코올 섭취군이 대조군 보다 체중은 유의적으로 감소하였다. 2. 미토콘드리아 ATPase 활성도는 알코올 섭취에 의해 유의적으로 감소되었고, 2-AAF 투여에 의해서는 유의적이지 않으나 감소되는 경향을 보였다. 따라서 대조군(C)에 비하여 알코올 섭취와 2-AAF투여군(EA)에서 ATPase 활성도가 29.3%의 감소를 나타냈다. 3. 간 미토콘드리아 콜레스테롤 함량은 알코올 섭취에 의해 유의적으로 증가하였으며 미토콘드리아 총 인지질량은 알코올과 2-AAF에 의한 상호작용에 의해 알코올 투여군에서만 2-AAF 투여시 유의적인 증가 효과를 보여주었다. C/PL 비율은 알코올 섭취와 2-AAF 투여 보두에서 유의적인 효과는 보이지 않았으나 군간 비교시 알코올군(E)이 대조군(C) 보다 유의적으로 증가하였다. 4. 간 미토콘드리아의 CL량은 알코올군에서 감소하는 경향을 보였고 PS와 PI량은 차이가 없었다. 알코올 섭취로 PC량은 유의적으로 증가하였으나 PE량은 차이가 없엇으며, 2-AAF 투여시 PC량은 유의적인 감소를 보였고 PE량은 유의적으로 증가하였다. PE/PC 비율은 알코올 투여에 의해 유의성은 없었으나 감소경향을 나타냈으며, 2-AAF 투여에 의해서는 유의적인 증가 효과가 나타났다. 5. 알코올 섭취시 미토콘드리아의 지방산 조성은 palmitic acid가 유의적으로 감소하였고, stearic acid는 유의적으로 증가함을 보였다. UFA/SFA와 UI는 알코올군에서 유의적이지는 않으나 증가되는 경향을 보였다. 2-AAF 투여에 의해서도 linoleic acid는 감소되고 arachidonic acid는 증가되는 경향을 보여 UI값이 증가되는 경향이 있었다. 따라서 본 실험에서 나타난 ATPase 호라성도 변화는 비토콘드리아의 콜레스테롤변화, C/PL 비율, 인지질 조성이나 지방산 조성의 변화 등 막지질 조성의 변화에 기인하는 것으로 생각된다.

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Cell-meditated studies on blooming and growth of potentially ichthyotoxic Cochlodinium polykrikoides(Dinophyceae)

  • Cho, Eun-Seob
    • 해양환경안전학회:학술대회논문집
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    • 해양환경안전학회 2007년도 추계학술발표회
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    • pp.187-188
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    • 2007
  • The fluctuations of biochemical and molecular activities III the harmful dinoflagellate, Cochlodinium polykrikoides, depending on water temperatures, were studied. In genomic DNA concentration, a similar value of 0.6 was shown at $12^{\circ}C$ and $15^{\circ}C$, but significantly increasing DNA from $18^{\circ}C$ (p<0.05), with a maximum of 1.8 at $24^{\circ}C$. After$24^{\circ}C$, the DNA significantly decreased to 0.6. Likely, the concentrations of RNA and total protein were at their highest values of 1.7 and 0.07 g $mL^1$ at $24^{\circ}C$, respectively. In contrast to ONA, RNA and total protein began to increase at $15^{\circ}C$. Oxygen availability between lower and higher temperatures was significantly different and increased from $18^{\circ}C$ according to light intensity, regardless of wavelengths (p<0.05). At $24^{\circ}C$, the highest value of the maximum electron transport rate (ETRmax), ranging from 537.9 (Ch 1) to 602.5 mol electrons $g^{-1}$ Ch1 a $s^{-1}$ (Ch 4), was also shown. Nitrate reductase (NR) and ATPase activities were at their highest values of 0.11 mol $NO_2^-g^{-1}$ Ch1 a $h^{-1}$ and 0.78 pmol 100 $mg^{-1}$ $at^2$ $4^{\circ}C$, respectively. When the cells cultured at $15^{\circ}C$, NR and ATPase activities significantly increased compared to $12^{\circ}C$ (p<0.05). In an analysis of CHN, the concentration of C and N also significantly increased (p<0.05). However, at $27^{\circ}C$, most of the molecular and biochemical movements were much lower, compared to $24^{\circ}C$. These results suggest that C. polykrikoides is very sensitive biochemical and molecular activities depending on water temperatures. Possibly, it is desirable to estimate at $18^{\circ}C$ the initiation of the massive blooming development of C. polykrikoides. In nature, it will be very difficult to maintain the massive blooms after $24^{\circ}C$ because of the possibility of significantly decreasing the molecular movement and activity of C. polykrikoides.

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쥐 심근 세포의 $[^3H]$ Ouabain 결합과 $^{45}Ca^{2+}}$섭취에 미치는 Ouabain의 영향 ($[^3H]$ Ouabain Binding and Effect of Ouabain on $^{45}Ca^{2+}$-Uptake in Rat Cardiac Myocytes)

  • 이신웅;김영희;진갑덕
    • 약학회지
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    • 제28권3호
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    • pp.129-138
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    • 1984
  • Specific [$^{3}H$] ouabain binding and $Ca^{2+}$ -uptake were measured to elucidate the role of high affinity [$^{3}H$] ouabain binding site in rat cardiac myocytes which contain 65% of rod cells. High affinity [$^{3}$H] ouabain binding site, which is about 3% of total pump sites, with apparent dissociation constant ($K_{D}$) of $1.1{\times}10^{-7}M$ and maximum binding site concentration (Bmax) of 1.2 pmol/mg protein ($1.754{\times}10^{5}cells$) were identified. At the concentration of $10^{-7}M$ to $10^{-4}M$, ouabain produced concentration dependent increase in $Ca^{2+}$-uptake of myocytes. The effect of ouabain on $Ca^{2+}$-uptake was not effected by membrane depolarization (elevated K+ in incubation medium) or verapamil. These results suggest that in rat ventricular myocytes the ouabain receptor complex to high affinity site may increase Na+ - $Ca^{2+}$ exchange across the sarcolemmal membrane by inhibition of Na+, K+ - ATPase.

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사료의 n-3계 고도불포화지방산 함량에 따른 조피볼락 Sebastes schlegeli의 성장 및 생화학적 변화 II. 혈액성분 변화 및 간세포 성상 (Effects of Dietary n-3 Highly Unsaturated Fatty Acids on Growth and Biochemical Changes in the Korean Rockfish Sebastes schlegeli II. Changes of Blood Chemistry and Properties of Liver Cells)

  • 이상민;이종윤;강용진;허성범
    • 한국양식학회지
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    • 제6권2호
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    • pp.107-123
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    • 1993
  • 조피볼락의 필수지방산인 n-3HUFA가 어체에 미치는 생화학적 변화를 알아보기 위하여, n-3HUFA 함량이 $0.0\~1.5\%$가 되도록 조정한 6종의 실험사료로 조피볼락 치어를 10주간 사육하여 혈액성상, 혈청성분 및 간세포 성상의 변화를 검토하였다. 혈액성상(RBC, Hb, Ht, MCV, MCHC 및 MCH)은 사료의 n-3HUFA 함량에 따라 유의적인 차이를 나타내지는 않았다. 혈청단백질 농도$(2.76\~3.63g/100ml)$ 및 혈당량$(36\~71mg/100ml)$은 n-3HUFA $0.9\%$ 사료까지는 증가하다가 그 이상에서는 일정한 값을 유지하였다. 혈중 total cholesterol 농도$(137\~86mg/100ml)$와 free cholesterol 농도$(84.2\~63.8mg/100ml)$는 n-3HUFA $1.2\%$까지 점차 감소하는 경향을 보였으며, 그 이상에서는 일정 하였다. 혈청 GPT $(159.7\~47.0 Karmen\; unit)$, GOT $(28.0\~11.1\;Karmen\;unit)$ 및 LDH $(3888\~1539\;W-unit)$도 모두 n-3HUFA $1.2\%$까지는 감소 경향을 보이다가 그 이후에는 일정한 값을 유지하였다. n-3HUFA 무첨가 사료를 먹은 실험어의 간조직은 n-3HUFA $1.5\%$ 첨가 사료를 먹은 실험어에 비해 인포색의 구조 붕괴와 부분적인 세포 융해가 관찰되었다. 간 cytosol의 LDH 활성과 microsomal membrane의 $Ca^{2+}-ATPase$ 활성도 변화되어 사료의 n-3HUFA가 증가할수록 증가한 경향을 보였다.

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진공포장한 소등심육의 냉장저장중 이화학적, 관능적 특성의 변화 (Changes of Physicochemical and Sensory Characteristics in Vacuum-Packaged Beef Loin during Cold Storage Time)

  • 정인철;문윤희;홍대진;김미숙
    • 한국식품영양과학회지
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    • 제27권2호
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    • pp.214-219
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    • 1998
  • This study was carried out to investigate the changes of physicochemical and sensory characteristics according to cold storage period of the vacuum-time beef loin. The pH was decreased for 10 days, and then was increased gradually during storage time. The lactic acid content during the initial storage was 483mg/100g, after storage for 10 days it was increased significantly (p<0.05) to 625mg/100g, and then was decreased with storage time. Regarding of color difference, the L values were 41.0~42.5, but after storage for 40 days they were increased significantly(p<0.05) to 46.2, the a and b values wee 17.3~14.3 and 7.2~5.8, respectively, they were no significant differences depending n storage time. The shear force values showed 584 and 560g for 0 and 10 days, respectively but after storage for 20 days it was decreased significntly(p<0.05) to 299g. The myofibrillar protein extractability was no significant difference for 20 days, howener, it was increased remarkably at 30 days(p<0.05). The myofibrillar fragmentation index was increased significantly (p<0.05) on 20 and 40 days, and the Mg-ATPase activity of myofibrils was increasd to 30 days. The free amino acid was increased during storage periods. The composition of amino acid was composed of glutamic acid, alanine, valine and lysine, which were predominant amino acids as 45%. The total free amino acid was increased 182.18mg/100g to 40 days. The raw meat aroma showed no significant changes during storage time, but the tenderness was increased until 30 days(p<0.05). The color was superior from 20 to 30 days. The taste of cooked meat indicated significant changer to 30 days, but was significantly inferior(p<0.05) at 40 days, the aroma was superior until 30 days(p<0.05). The palatability was superior between 20 and 30 days.

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수온에 따른 유해성 Cochlodinium polykrikoides 적조생물의 세포생리 변화 (Dependence of Sub-Cellular Activities of the Blooming and Harmful Dinoflagellate Cochlodinium Polykrikoides on Temperature)

  • 조은섭
    • 생명과학회지
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    • 제18권9호
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    • pp.1194-1201
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    • 2008
  • 본 연구는 유해성 Cochlodinium polykrikoides 적조생물을 대상으로 수온변화에 따른 세포 생화학적 및 생리 활성도를 측정했다. Genomic DNA 함량은 $12^{\circ}C$$15^{\circ}C$에서 거의 비슷한 0.6을 보였으나, $18^{\circ}C$부터 급격히 높아져서 $24^{\circ}C$ 최고 1.8를 나타내었다. RNA와 total protein도 $24^{\circ}C$에 가장 높은 1.7과 0.07 ${\mu}g$ $ml^{-1}$으로 나타났다. 광합성량도 수온에 따른 큰 변화를 보였다. 빛의 파장에 관계없이 $18^{\circ}C$ 이상에서 현저히 높은 값을 보였다. $24^{\circ}C$ $ETR_{max}$ Ch1-Ch4까지의 범위는 537.9에서 602.5 ${\mu}mol$ electrons $g^{-1}$ Chl ${\alpha}s^{-1}$ 나타났다. Nitrate reductase와 ATPase 효소 활성도는 $24^{\circ}C$에서 각각 0.11 ${\mu}mol$ $NO_{2}^{-}$ ${\mu}g^{-1}$ Chl ${\alpha}h^{-1}$ , 0.78 pmol 100 $mg^{-1}$ 나타났다. CHN 분석에서도 수온에 따라 C, H, N의 함량이 현저하게 상이했다. $27^{\circ}C$ 배양시 $24^{\circ}C$에 비하여 대부분의 세포생리물질이 낮게 보였다. 따라서 C. polykrikoides는 수온 변화에 대하여 세포대사물질의 함량이 많은 차이를 볼 수 있어서 초기 적조 발생 조건은 $18^{\circ}C$로 추측된다. 본 실험의 결과로 $24^{\circ}C$ 이상이 되면 C. polykrikoides 대번식은 세포 내 생리물질의 현저한 저하로 형성되기가 어려울 것으로 보인다.

Cinnamaldehyde Attenuates Cataractogenesis via Restoration of Hypertension and Oxidative Stress in Fructose-Fed Hypertensive rats

  • Singh, Amrita;Ahmad Khan, Samsroz;Choudhary, Rajesh;Bodakhe, Surendra Haribhau
    • 대한약침학회지
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    • 제19권2호
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    • pp.137-144
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    • 2016
  • Objectives: Several studies have revealed that systemic hypertension is strongly associated with cataractogenesis. However, the pathophysiology and treatment is often unclear. In this study, we evaluated the anti-cataractogenic effect of cinnamaldehyde (CA), a natural organic compound, in rats with fructose-induced hypertension. Methods: The rats were divided into six groups. For six weeks, the normal group received a suspension of 0.5% carboxy methyl cellulose (10 mL/kg/day, p.o.) while five other groups received a 10% (w/v) fructose solution in their drinking water to induce hypertension. By the end of the third week hypertension had been induced in all the animals receiving fructose. From the beginning of the fourth week to the end of the sixth week, one of those five groups (control) continued to receive only 10% (w/v) fructose solution, one group (standard) received ramipril (1 mg/kg/day, p.o.) plus 10% (w/v) fructose solution, and three groups (experimental) received CA at doses of 20, 30, and 40 mg/kg/day p.o., plus 10% (w/v) fructose solution. Blood pressure was measured weekly using a non-invasive blood pressure apparatus. After six weeks, the animals were sacrificed, and the anti-cataractogenic effects on the eye lenses were evaluated. Results: Administration of fructose elevated both the systolic and the diastolic blood pressures, which were significantly reduced by CA at all dose levels. In the control group, a significant increase in the malonaldehyde (MDA) level and decreases in the total protein, $Ca^{2+}$adenosine triphosphate (ATP)ase activity, glutathione peroxidase, catalase, superoxide dismutase and glutathione levels, as compared to the normal group, were observed. Administration of CA at all doses significantly restored the enzymatic, non-enzymatic, antioxidants, total protein, and $Ca^{2+}$ATPase levels, but decreased the MDA level, as compared to the control group. Conclusion: The present study revealed that CA modulated the antioxidant parameters of the serum and lens homogenates in hypertension-induced cataractogenic animals.

Effects of Dietary L-carnitine Supplementation on Growth Performance, Organ Weight, Biochemical Parameters and Ascites Susceptibility in Broilers Reared Under Low-temperature Environment

  • Wang, Y.W.;Ning, D.;Peng, Y.Z.;Guo, Y.M.
    • Asian-Australasian Journal of Animal Sciences
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    • 제26권2호
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    • pp.233-240
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    • 2013
  • The objective of this study was to investigate the effects of L-carnitine on growth performance, organ weight, biochemical parameters of blood, heart and liver, and ascites susceptibility of broilers at different ages reared under a low-temperature environment. A total of 420 1-d-old male Ross 308 broilers were randomly assigned to two dietary treatments with fifteen replicates of fourteen broilers each. Treatment diets consisted of L-carnitine supplementation at levels of 0 and 100 mg/kg. At 11-d of age, low temperature stress was used to increase ascites susceptibility. Blood, heart and liver samples were collected at different ages for analysis of boichemical parameters. The results showed that, there was no significant difference in growth performance with L-carnitine supplementation, but the mortality due to ascites was significantly decreased. Dietary L-carnitine supplementation significantly reduced heart index (HI) and ascites heart index (AHI) on d 21, lung index (LUI) on d 35 and liver index (LI) on d 42. The broilers fed diets containing L-carnitine had significantly lower red blood cell counts (RBC), hemoglobin (HGB) concentration and hematocrit (HCT) on d 42. Dietary L-carnitine supplementation significantly reduced malondialdehyde (MDA) content of heart tissue on d 21 and 35, and significantly increased total superoxide dismutase (T-SOD) and Glutathione peroxidase (GSH-Px) activity of the heart on d 21 and 42. L-carnitine supplementation significantly reduced serum triglyceride (TG) content on d 28 and 35 and serum glucose (GLU) on d 35 and 42, and significantly increased serum total protein (TP) and globulin (GLO) content on d 42. L-carnitine supplementation significantly enhanced liver succinodehydrogenase (SDH), malic dehydrogenase (MDH) and $Na^+$-$K^+$-ATPase activity on d 28, and tended to reduce the lactic acid (LD) level of liver on d 35 (p = 0.06). L-carnitine supplementation significantly reduced serum uric acid (UA) content on d 28, 35 and 42. Based on the current results, it can be concluded that dietary L-carnitine supplementation reduced organ index, red blood cell counts and hematocrit, enhanced antioxidative capacity of the heart, enhanced liver enzymes activity involved in tricarboxylic acid cycle, and reduced serum glucose and triglyceride. Therefore, it is suggested that L-carnitine can potentially reduce susceptibility and mortality due to ascites.

보리새우육의 부분동결저장중 단백질 및 아미노산의 조성변화 (Postmortem Changes of the Protein and Amino Acid Composition of Muscles in the Partially Frozen Prawn, Pandalus japonica)

  • 변재형;최영준;김정한;조권옥
    • 한국수산과학회지
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    • 제17권4호
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    • pp.280-290
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    • 1984
  • 부분동결상태하의 선도 변화와 육단백질 조성변화와의 관계를 규명하기 위하여, 보리새우를 시료로하여 부분동결 조건($-3^{\circ}C$)에 저장하여 두고 저장일수의 경과와 더불어 선도 변화의 단계별로 육의 단백질의 조성, 단백질 구성아미노산 및 유리아미노산의 조성 등의 변화를 비교, 분석하였다. 그리고, 단백질의 조성 변화는 이를 엄밀히 검토하기 위하여, 육에서 근형질 단백질과 근원섬유 단백질을 각각 추출하고 선도변화에 따른 각 단백질의 구성 subunit의 변화를 SDS-PAG 전기영동분석에 의하여 검토하였으며, 한편, 근원섬유 단백질에 대하여는 $-3^{\circ}C$$-20^{\circ}C$에 저장하면서 Ca-ATPase 활성도의 변화를 측정하여 변성의 속도정수($K_D$)도 구하였다. 보리새우의 육중에는 약$23\%$ 조단백질을 함유하고 있었으며, 단백질조성을 분석한 결과, 근형질단백질 $31.45\%$, 근원섬유 단백질 $5.04\%$, 세포내잔사단백질 $10.30\%$, 그리고 기질 단백질 $2.17\%$로 이루어져 있었다. 부분동결 저장 중의 선도변화를 선도변화 지표인 K-값, 총휘발성 염기질소량 및 pH의 변화로서 측정한 결과, 저장 26일째에 부패 초기에 접근하는 총휘발성 염기질소량 $25.29mg\%$, K-값 $31.36\%$, pH 8.83에 도달하였다. 부분동결 저장 중에는 저장기간의 경과와 더불어 근원섬유 단백질은 현저한 감소를 보였으며 기질단백질은 조금씩 감소하였다. 그러나 세포내잔사 단백질은 많은 증가를 보였고 근형질 단백질도 조금 증가하였다. 별도로 근원섬유 단백질의 일부를 $-3^{\circ}C$$-20^{\circ}C$에 두고 Ca-ATPase 활성도의 변화를 측정하여 변성속도정수를 구하였더니 $-3^{\circ}C$에서는 $K_D=9.03{\times}10^{-6}sec^{-1}$, 그리고 $-20^{\circ}C$에서는 $K_D=4.42{\times}10^{-6}sec^{-1}$을 보여 $-20^{\circ}C$ 일때가 훨씬 안정하였다. 근형질 단백질과 근원섬유 단백질의 구성 subunit의 변화를 SDS-PAG 전기영동법으로 분석한 결과, 근형질 단백질은 즉살했을때 12개의 subunit 이던것이 부패초기에 가까운 상태를 보인 26일째에는 8개 subunit만이 남았고, 근원섬유 단백질에 있어서는 즉살했을 때 17개 subunit이던 것이 26일이 경과했을 때는 22개 subunit로 증가하였다. 근원섬유 단백질 구성 subunit중에서 저장중에 새로히 출현한 subunit는 30,000, 41,000, 107,000, 136,000, 170,000, 173,000, 185,000 및 198,000 dalton의 각 subunit이었으며, 소멸한 subunit는 19,000, 22,000, 140,000 및 165,000 dalton의 각 subunit였다. 부분동결 저장 중 단백질을 구성하는 아미노산의 조성 변화를 분석한 결과, 대부분의 아미노산은 시일의 경과와 더블어 일률적으로 조금씩 감소하는 경향이었다. 그러나 유리아미노산의 조성 변화에 있어서는 즉살한 보리새우육 중에는 glycine, proline, arginine, alanine 및 taurine 등 5종의 아미노산이 총유리아미노산의 $93\%$를 차지하였다. 저장중에는 taurine, valine, leucine, phenylalanine, serine, Lysine, methionine, isoleucine, histidine 등이 2배 이상 증가하였으나 proline만은 대폭 감소한 것이 특징이었다.

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