• Title/Summary/Keyword: 단백 S

Search Result 946, Processing Time 0.031 seconds

Gelation of Rapeseed Protein Induced with Microbial Transglutaminase (미생물성 Transglutaminase에 의한 유채단백질의 겔화)

  • Hyun, Eun-Hee;Kang, Yeung-Joo
    • Korean Journal of Food Science and Technology
    • /
    • v.31 no.5
    • /
    • pp.1262-1267
    • /
    • 1999
  • Optimum reaction conditions for gel formation of rapeseed, Brassica napus, protein catalyzed by microbial TGase(transglutaminase) were evaluated by measuring breaking strength and deformation of gel. The polymerization of the protein gel was ascertained by SDS-PAGE and content of GL crosslinking$[{\varepsilon}-({\gamma}-glutamyl)lysine]$. In the reaction between rapeseed protein and TGase at $45^{\circ}C$ for 60 min, the breaking strength and deformation of the gel was the maximum at the ratio of 1 : 40 of enzyme to substrate. 10%(w/v) of rapeseed protein concentrate was optimum for gel production. The maximum breaking strength and deformation was shown at $45^{\circ}C$ The breaking strength increased linearly up to 90 min of the reaction time and remained unchanged. The breaking strength and deformation by TGase treatment was pH dependent and pH 7 was optimum for 10% rapeseed protein solution. SDS-PAGE analysis indicated that new band of highmolecular polymers were formed by the enzyme reaction, with disappearing the original bands of rapeseed protein. According to HPLC analysis. the content of GL crosslinking was increased from 0 to $7.14\;{\mu}mol/g$ gel for 90 min of the reaction time.

  • PDF

The Significance of p53 Expression in Serum and Tissue from Patients with Lung Cancer (원발성 폐암환자의 혈청 및 조직에서의 p53단백 표현)

  • Chang, Jung-Hyun;Sung, Sun-Hee
    • Tuberculosis and Respiratory Diseases
    • /
    • v.45 no.2
    • /
    • pp.333-340
    • /
    • 1998
  • Background: Lung cancer is the leading cause of cancer over the world. P53 alteration is by far the most common genetic defect in lung cancer. The mutation of p53 protein involves the loss of inhibitory function of p53 related tumor suppressor gene and resultant oncogenesis. The analysis of p53 alterations consists of immunohistochemical stain, PCR based assay, or serologic ELISA (enzyme-linked immunosorbent assay). Methods : Serum levels of p53 mutant protein were measured in 69 cases of lung cancer (adenocarcinoma n=29, epidermoid n=16, small cell n=13, large cell n=1, undifferentiated n=1, undetermined n=9) and 42 controls of respiratory disorders using ELISA. Immunohistochemical stain in tissue was performed using monoclonal antibody of p53 in lung cancer subjects. Results: Both serum p53s in nonsmall cell cancer ($0.28{\pm}0.44ng/ml$) and in small cell cancer ($0.20{\pm}0.14ng/ml$) were not different from controls ($0.34{\pm}0.20ng/ml$). Also there was no significant difference in serum p53 according to tumor stages. P53 immunohistochemical stain showed 50% positivity overall in lung cancer. There were no close correlation between serologic level and positivity of immunohistochemical stain. Conclusion: The serologic determination of p53 mutant protein is thought to have no diagnostic role in lung cancer. Immunohistochemical stain in lung cancer specimen shows 50% positivity.

  • PDF

Further characterization of the causative virus of rabbit viral hepatitis, so-called rabbit haemorrhagic disease in Korea (국내에서 발생한 토끼 바이러스성 간염 소위 토끼 출혈병 바이러스의 성상)

  • Jyeong, Jong-sik;Jeong, Kyu-sik;Lee, Cha-soo;Shin, Tae-kyun
    • Korean Journal of Veterinary Research
    • /
    • v.32 no.3
    • /
    • pp.399-402
    • /
    • 1992
  • The causative virus causing rabbit hepatitis has been further characterized by evaluating viral proteins and viral nucleic acids of purified viruses from the liver of the experimentally infected rabbits. Rabbit hepatitis virus has one major structural protein of 54 kilodaltons and some minor proteins. Vrial RNA was resistant to DNAse I. The size of viral nucleic acid of this virus was calculated to be about 7.5 kilobases. These findings indicate that rabbit hepatitis virus belongs to the family Caliciviridae.

  • PDF

A Case of Infantile Spasm Associated with Acute Renal Failure and Kwashiorkor after Ketogenic Diet (케톤생성 식이요법 후 급성신부전 및 단백열량부족증 소견을 보인 영아성 경축 1례)

  • Kim, Young-Myoung;Kim, Tae-Hong;Jung, Jin-A;Hwang, Kyu-Geun
    • Clinical and Experimental Pediatrics
    • /
    • v.46 no.11
    • /
    • pp.1131-1134
    • /
    • 2003
  • The ketogenic diet is a high-fat, low-protein, low-carbohydrate diet developed in the 1920s for the treatment of difficult-to-control seizures. Despite advances in both the pharmacotherapy and the surgery of epilepsy, many children continue to have difficult-to-control seizures. In this situation, a ketogenic diet should be considered as an alternative therapy. However, less attention has been paid to associated adverse events in the ketogenic diet. We report a case of infantile spasm associated with acute renal failure, lipoid pneumonitis and kwashiorkor after ketogenic diet. A better understanding of this adverse event profile will allow the pediatric neurologist to have a true informed consent discussion with the care giver when considering initiation of the ketogenic diet.

The quality characteristics of frozen soy yogurt prepared with soy protein isolate, industrial proteases and commercial mixed cultures (산업용 단백분해효소로 처리한 분리대두단백과 혼합균주의 종류가 frozen soy yogurt의 품질특성에 미치는 영향)

  • Lee Sook-Young;Park Mi-Jung
    • Korean journal of food and cookery science
    • /
    • v.20 no.6 s.84
    • /
    • pp.658-666
    • /
    • 2004
  • In order to develop and commercialize high quality frozen soy yogurt, the effects of industrial proteases and commercial mixed cultures were examined on the functional properties and the sensory attributes of frozen soy yogurt. For quality improvement, soy protein isolates were primarily hydrolyzed by either Flavourzyme or Neurtrase, industrial Proteases, to reduce the beany flavor and increase the functional properties of the protein. The viable cell count of lactic acid bacteria was higher in the soy protein hydrolysates than whenuntreated. ABT-5 (L. acidophilus, Bifidobacterium lactis, and S. thermophilus) resulted in higher acid tolerance, bile acid tolerance and melt-down percent values than those with YC-X11 (Lactobacillus bulgaricus and Streptococci thermophilus). The overrun of frozen soy yogurt was improved by both Flavourzyme $(193.3\%)$ and Neurtrase $(156.7\%)$ treatments. With regard to thesensory characteristics, Flavourzyme improved the beany flavor, astringency taste, mouth feel and overall quality of frozen soy yogurts fermented with ABT-5. Further studies onproduct formulation will be needed to commercialize the frozen soy yogurt for the market.

대웅세파(DWC-751)의 체내동태 시험

  • 심창구;최은진;이성원;김동오;박남준;강영숙;유영효
    • Proceedings of the Korean Society of Applied Pharmacology
    • /
    • 1993.04a
    • /
    • pp.107-107
    • /
    • 1993
  • 결과 및 고찰: 이 약의 흰쥐에서의 체내동태는 혈중농도로 볼 때 2-exponential pharmacokinetics에 따르고, HPLC법으로 정량한 경우의 $T_1$/$_2$$\alpha$, $T_1$/$_2$$\beta$, AUC, C $L_{T}$, C $L_{R}$, V $D_{SS}$ 는 각각 1.90min, 21.89min, 1899.36$\mu\textrm{g}$ㆍmin/ml, 10.66ml/min/kg, 7.48ml/min/kg, 0.28l/kg으로 bioassay법과는 약간의 차이를 보였다. 분포특성은 간장과 신장에 많이 이행하였으며, 폐로의 이행도 적지만 관찰되었다. 이 약의 단백결합률은 그 농도가 31.3$\mu$M일 때 42.3%였고 water/n-octanol계에서의 유상으로의 분배는 거의 일어나지 않았다. 이 약의 분포용적이 작은 것은 단백결합 때문이라기보다는 높은 극성때문으로 추정되었다. 이 약의 C $L_{R}$은 GFR의 문헌치보다 컸으며 C $L_{T}$의 약 2/3을 차지하므로 약물소실에 있어서 신장의 기여도가 크고 신배설 과정에 신분비가 관여하고 있음을 알 수 있었다. 이런 사실은 CAZ나 CTX등의 기존 세파계 항생제들과 유사했으며, 추후 다회투여시와 용량의존적 체내동태에 관해 더 많은 연구가 필요하리라 생각되었다.되었다.

  • PDF

Anti-cancer Activity of Lentinus edoeds and Pleurotus astreatus (표고버섯과 느타리 버섯의 항암효과)

  • Park, Moo-Hyun;Oh, Kook-Yong;Lee, Byung-Woo
    • Korean Journal of Food Science and Technology
    • /
    • v.30 no.3
    • /
    • pp.702-708
    • /
    • 1998
  • The effects of mushrooms such as Lentinus edodes and Pleurotus ostreatus on anti-cancer activity through in vivo and in vitro experiments were powders of protein-bound polysaccharides in mushrooms were solubilized in 0, 5, 25 mg/kg saline, respectively and were used in vitro experiments. The in vivo experiments were carried out as followed: i) anti-cancer activities on Leukemia $(L_{1210})$, Hepatlicus cancer $(H_{22})$ and Sarcoma180/(S180), and ii) the effect on immune system through changes in intestine weight and the number of hemolytic plague forming cells. Protein-bound polysaccharides of all showed anti-cancer activity on $L_{1210}$ and fruit body of Lentinus edodes 25 mg/kg treatment group showed the highest inhibition rate (86%). Pleurotus ostreatus mycelial in medium of cultivate 25 mg/kg treatment. Fruid body of Lentinus edodes 25 mg/kg treatment group showed the highest inhibition rate (86% and 71%, respectively) on $H_{22}$ among them. The inhibition rates of fruit body and mycelial of Lentinus edodes 25 mg/kg treatment groups on S180 were 33.9% and 30.9%, respectively. Each samples of 50, 100, 200, $400\;{\mu}g/{\mu}L$ on in vitro cell toxicity test did not show significantly different cell death rates at P<0.05. In immune test, weights of liver and spleen were increased according to increase in conc. but were not significantly different at P<0.05. The weights of thymus were heavy in fruit body and mycelial of Lentinus edodes treatment group but were not significantly different at P<0.05. Hemolytic plague forming cells with antibody formation capability were significantly high in fruit body and mycelial of Lentinus edodes treatment samples.

  • PDF

Effects of Cordyceps Militaris Mycelia(CMM) oral administration and Herbal Acupuncture at Shinsu(BL23), Tae-gye(K3) on Expression of Aquaporin-2 Protein Water Channels in the Kidney and the Renal Function in Rats with Renal Failure by Uninephrectomy (신유(腎兪),태계(太谿)의 동충하초(冬蟲夏草) 약침(藥鍼)과 경구(經口) 투여(投與)가 좌측 신장(腎臟) 제거 백서(白鼠)에 대한 신장(腎臟) Aquaporin-2 단백(蛋白) 발현(發現)과 신장기능(腎臟機能)에 미치는 영향(影響))

  • Kim, Jae-hong;Yoon, Dae-hwan;Na, Chang-su;Cho, Myung-rae;Yoon, Yeo-choong;Chae, Wu-suk
    • Journal of Acupuncture Research
    • /
    • v.22 no.1
    • /
    • pp.61-75
    • /
    • 2005
  • Objective : The purpose of this study is to arrange the literature about a acupuncture therapy on the knee rheumatoid arthritis. Methods : We arrange fifty kinds of literature about a acupuncture therapy of knee joint, knee arthritis, Results : Acupucture point at G30, G34, S36, LI11, B4O, G39, G38, LI4 used freaquently for the acupuncture therapy Conclusion : B, G, S, Sp of merdians used frequently for the acupuncture therapy.

  • PDF

Production of Candida utilis Biomass on Chinese Cabbage Juice (배추즙액을 기질로 이용한 Candida utilis 균체의 생산)

  • Lee, Nam-Seok;Kyung, Kyu-Hang
    • Korean Journal of Food Science and Technology
    • /
    • v.24 no.3
    • /
    • pp.221-225
    • /
    • 1992
  • The possibility of using Chinese cabbage juice as a substrate for the production of Candida utilis cell mass was explored. Dry cell weight production and cell yield coefficient were 1.35-1.45 g/100 ml undiluted juice and 47-50%, respectively, when C. utilis was grown by shake flask culture at $30^{\circ}C$ for 24 hr on more than three-fold diluted Chinese cabbage juice to make the final sugar content be equal to or less than 1.0%. Supplementation of glucose(2%), $KH_2PO_4(0.2%)$ and $(NH_4)_2SO_4(0.2%)$ to three-fold diluted Chinese cabbage juice did not enhance the dry cell weight yield or the protein content of the yeast cell, while supplementation of yeast extract(0.2%) and peptone(0.2%) increased dry cell weight production and protein content but not as much as the amount of each nutrient added. It was found that Chinese cabbage juice was an excellent substrate for the cultivation of C. utilis.

  • PDF

Keeping Quality of Yogurt Beverage Prepared from Soy Protein Concentrate (농축대두단백(濃縮大豆蛋白)으로 제조된 유산균음료의 저장성)

  • Paik, In-Sook;Lim, Sook-Ja;Ko, Young-Tae
    • Korean Journal of Food Science and Technology
    • /
    • v.17 no.1
    • /
    • pp.45-50
    • /
    • 1985
  • Soy yogurt beverage(SYB) was prepared from soy protein concentrate and the effect of stabilizers on the sedimentation of SYB curd and the microbiological quality of SYB during storage were investigated. The curd in SYB precipitated significantly during the first one hour of storage and the sedimentation of curd was reduced by the addition of CMC of over 0.6%, PGA of over 0.2% or Na-alginate of over 0.05%. SYB could be kept for 66 days at $5^{\circ}C$ without significant change in viable cell count of lactic acid bacteria. pH, titratable, acidity and viable cell count of SYB were significantly changed from 42 days of storage at $25^{\circ}C$. Some of SYB samples were contaminated by fungi and the growth of fungi was greatly inhibited by the addition of K-sorbate of 0.005%.

  • PDF