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트랜스글루타미나제의 첨가량과 반응 조건에 따른 조직화된 식물 단백질 기반 유화물의 품질특성
김예지 ( Yea-ji Kim ),차지윤 ( Ji Yoon Cha ),김태경 ( Tae-kyung Kim ),박민경 ( Min Kyung Park ),강민철 ( Min Cheoul Kang ),이재훈 ( Jae Hoon Lee ),김동현 ( Dong Hyun Kim ),최윤상 ( Yun-sang Choi ) 한국식품조리과학회 2024 한국식품조리과학회지 Vol.40 No.2
Purpose: In this study, we sought to determine the impact of transglutaminase (TG) reaction on the structural and functional properties of textured vegetable protein (TVP) and to explore optimal conditions for TG reaction that can improve quality characteristics. Methods: TVP was immersed, moisture was removed, homogenized, and used as an experimental material. After mixing with TG, it was reacted at 5℃, 15℃, 25℃, and 50℃ for 240 min, 100 min, 60 min, and 10 min, respectively. TVP-TG emulsion was prepared and pH, color, moisture content, emulsion stability, textural properties, and cooking loss were measured. Amino acid analysis and differential scanning calorimetry (DSC) were carried out. Results: When TVP was subjected to TG reaction, the pH tended to increase, and the lightness and yellowness of the emulsion after heating also appeared to increase. The amino acid content and moisture content were highest at 25℃. Emulsion stability was lower values for both the total (water and fat) separation amount and fat separation amount during the TG treatment compared to the control group. Thermal property measurements showed that both thermal denaturation temperature and denaturation capacity were highest at 25℃, but no significant difference was observed. Hardness was significantly higher when TG was reacted at 5℃ and 25℃. Conclusion: TG treatment affected the structural and functional properties of TVP. No significant difference was observed with varying TG content, and 25℃ could be considered the optimal condition for the reaction.
A Simple Method for the Detection and Identification of Korean Brown Cattle(Hanwoo) using DHPLC
Kang. Won,Park. Sane-Bum,Nam. Youn-Hyoung,An. Young-Chang,Lee. Sang-Hyun,Park. Jin-Keun,Lee. Jae-Sik,Jang. On-Cheoul,Park. Su-Min,Park. Yong-Hyun,Ko. Kyung-Hee,Moon. Sung-Sil 한국축산식품학회 2006 심포지움 및 학술발표회 Vol.- No.37
Denaturing high-performance liquid chromatography(DHPLC) is used in a wide variety of genetic applications and is an efficient method for detection of mutations involving one or a few nucleotides. We developed a high-throughput DHPLC method for identifying polymorphisms in the MC1R gene that are characteristic of Hanwoo cattle. We compared 10 tissue samples from Hanwoo cattle, 10 samples from Holstein cattle and 10 samples from Hanwoox Holstein crossbred cattle to determine whether DHPLC analysis can be used to distinguish between these genotypes. Samples obtained from Hanwoo cattle had a unique profile of peaks that could be used as a molecular fingerprint for this breed. We also analyzed two hundred samples in a trial in which we were blinded to the genotype of the samples and correctly identified the breed-of-origin of 594 out of 600 sequence variations(99%).
Alpha-Fetoprotein이 증가한 만성 간질환의 임상적 특성
김창민,홍석일,조희준,이영현,김봉석,홍원선,이진오,김유철,강태웅,김서운 대한소화기학회 1992 대한소화기학회지 Vol.24 No.4
In an attempt to investigate the factors influencing the specificity of serum level of alphafetoprotein (AFP) for hepatocellular carcinoma, serum levels of AFP were analyzed in 33 patients treated at the department of gastroenterology in the Korea Cancer Center Hospital between January 1989 and December 1991. All patients entered into the study had chronic liver disease with increased serum level of AFP, more than 50 ng/ml. Clinical and; laboratory parameters, such as HBsAg, Anti-HCV, GOT and GPT and image studies with ultraonograpy and computed tomography were sequentially evaluated, every two or three months, in 2Z' patients. Among 33 patients, 30 had liver cirrhosis and three had chronic hepatitis. The median level of serum AFP was 189 ng/ml in 33 patients. Thirty (90.9%) out of 33 patients were positive for HBsAg. Anti-HCV was tested in 14 patients, among whom four (28.6%) were positive. No significant correlation was observed between serum AFP levels and age, sex or positive rates for HBsAg, anti-HCV and cirrhosis. In 32 among 33 patients, no evidence of the development of hepatocellar carcinoma was found after the follow-up period of six to 36 months, when hepatocellar carcinoma teas diagnosed as the space occupying lesion in the liver by ultrasonograpy and computed tomography. Another one patient was also suggested not to develop hepatocellar carcinoma, when clinically evaluated, because liver function and serum AFP level were markedly improved. The follow-up period in 22 patients was determined as the period until the AFP level decreased below the cut-off value, 50 ng/ml, or the end of study period. The serum AFP level and liver function were sequentially tested during the median follow-up period of 7.5 months (range, 3-30), demonstrating that the median serum AFP level significantly decreased from 376.6 ng/ ml to 57.6 ng/ml (p$lt;0.05). With the decrease in serum AFP levels, serum levels of GOT and GPT also decreased (p$lt;0.01). In 20 out of 22 patients, serum level of AFP decreased to less than 50% of the inital level of AFP after the follow-up period. In eight and seven patients, serum levels of AFP decreased to the normal level, less than 20 ng/ml, after tile median follow-up period of 14.5 months (range, 5-30) and 20-49 ng/ml during 4.5 months (range, 3.11), respectively. In two patients, however, change in the serum AFP levels was not observed. In seven patients who had the initial serum AFP level of more than 100 ng/ml and tested serum AFP level and liver function test every two months. serum levels of AFP, GOT and GPT concurrently decreased during the follow-up period. These results demonstrating that serum AFP level increased in benign liver diseases, such as liver cirrhosis and chronic hepatitis, suggest that, in order to increase the clinical usefulness of serum level of AFP for the diagnosis of hepatocellular carcinoma, serum AFP level should be reevaluated for the specificity for hepatocellular carcinoma according to the cut-off value. Because serum AFP level decreased in most of the patients after the follow-up period, tit is also suggested that AFP elevated in benign liver disease might be different from that in hepatocellular carcinoma in molecular characteristics.
HBsAg 양성인 비호즈킨 림프종 환자에서 항암 화학요법 후 간 기능 악화
김창민,이영우,이상원,김봉석,이군희,조진아,정숙향,이진오,한철주,김유철,정문관,강윤구,류백렬,곽진영,홍현주,이군학 대한소화기학회 2000 대한소화기학회지 Vol.35 No.1
Background/Aims: Immunosuppressive therapy such as anti-cancer chemotherapy is often complicated with reactivation of hepatitis B. We tried to investigate the prevalence of hepatitis B virus (HBV) infection in patients with non-Hodgkin's lymphoma (NHL). Furthermore, we evaluated the frequency of hepatic complications, the clinical outcome, and the risk factors associated with the development of hepatic complications in HBsAg-positive patients treated with chemotherapy for NHL. Methods: One hundred eighty-five patients who were diagnosed as NHL and treated with chemotherapy were retrospectively analyzed. Results: The prevalence of HBV infection was 14.1% of the patients. The frequency of hepatic complications in HBsAg-positive patients receiving chemotherapy for NHL was significantly higher than those of HBsAg-negative patients. (50% vs. 10.1%), and the complete response (CR) rate was significantly lower (42.3% vs. 67.9%). We could not find any significant risk factor associated with the development of hepatic complications in HBsAg-positive NHL patients received chemotherapy. Conclusions: For HBsAg-positive NHL patients receiving chemotherapy, special concern and close follow-up is needed because of high frequency of hepatic complication and low CR rate caused by chemotherapy.
위선암 발생에 있어 Helicobacter pylori 감염 및 cag A 유전자 발현의 역할
김창민,정숙향,이승숙,이진오,김유철,강태웅,이원애,송은정,조경자 대한소화기학회 1999 대한소화기학회지 Vol.33 No.3
Background/Aims: The aim of this study was to study the role of Helicobacter pylori infection and cagA expression in gastric carcinogenesis. Methods: One hundred forty six patients were divided into three groups. Case group included 50 patients with gastric adenocarcinoma. Control group 1 included 38 patients with nongastric cancer, and control group 2 included 58 patients with nonulcer dyspepsia Biopsy specimens were evaluated to detect the presence of Helicobacter pylori by histology, rapid urease test and reverse transcription-polymerase chain reaction (RT-PCR) using primers specific for 16S rRNA and cagA mRNA of Helicobacter pylori. Results: The expression rates of 16S rRNA and cagA mRNA of Helicobacter pylori in patients with gastric carcinoma were 74% and 51%, respectively. Although 90% of patients with gastric carcinoma had Helicobacter pylori infection, the significant association between Helicobacter pylori infection and gastric carcinoma was not observed. There was no significant association between cagA expression and gastric carcinoma. Conclusions: Helico bacter pylori infection and cagA expression were not associated with the risk of gastric carcinoma (Kor J Gastroenterol 1999;33:321 - 330)
조광민(Kwang-Min Cho),정상일(Sang-Il Jung),이정우(Jung-Woo Lee),강철신(Cheoul-Shin Kang) 한국정보과학회 1996 한국정보과학회 학술발표논문집 Vol.23 No.1A
기존의 적외선(Infrared), 협대역 마이크로 웨이브(Micro Wave), 혹은 주파수 스펙트럼 확산 방식 등을 이용하는 무선 액세스 방법들은 전송 속도의 한계로 인하여 고품질의 화상 회의, 비디오전화, 그리고 화상 데이터베이스등의 서비스가 가능한 차세대 멀티미디어 무선 LAN으로 구축하기에는 미흡하다. 반면에 최근에 제안된 적외선 링크(Link)를 이용하는 광(optical) 무선 액세스 방식은 초고속 광대역 네트워킹과 이동성 모두를 만족시킬 수 있는 방식으로 주목받고 있으며, 전송 속도와 경제적인 면을 고려할때 향후 차세대 광대역 무선 LAN에 가장 적합한 방식으로 기대되고 있다. 본 논문에서는 차세대 광대역 서비스를 제공할 수 있는 초고속 무선 LAN 시스템을 위한 무선 액세스 시스템을 기초 설계하고, 그 구조에 맞는 무선 액세스 프로토콜을 제안하였다.
간경변증 환자에서 간의 조직 괴사로 인해 공간점유병변을 보였던 중례 2예
김창민,김성배,정숙향,이진오,김유철,강태웅,남승모,김재학 대한소화기학회 1998 대한소화기학회지 Vol.32 No.1
Ischemic necrosis of the cirrhotic liver is rare because the liver has dual blood supply and an extensive collateral system. However, it may occur in the condition of sudden reduction of hepatic arterial flow such as acute blood loss or shock Recently, we experienced two cases of ischemic necrosis of the liver assoicated with cirrhosis. Those were presented as space-occupying lesions on the radiological study. In contrast with hepatocellular carcinoma, these lesions showed neither hypervascularity nor deposition of injected lipiodol. Repeated percutaneous fine needle cytology revealed no evidence of malignant cells, Furthermore, short-term follow-up examination showed decrease in size and/or extent of the lesions, It is important to differentiate these lesions from tumorous condition because interventional trial such as transarterial chemoembolization may further aggravate the ischemic lesion and unnecessary surgery under false impression of hepatocellular carcinoma in cirrhotic patients should be avoided.