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유산균 투여가 건강한 성인의 분변미생물 및 부패산물 생성에 미치는 영향
신명수,김용재,배형석,백영진 한국미생물생명공학회 ( 구 한국산업미생물학회 ) 1996 한국미생물·생명공학회지 Vol.24 No.2
유산균의 장내균총과 부패산물 생성에 미치는 영향을 알아보기 위하여, 건강한 성인 남녀 6명의 지원자에게 Lactobacillus acidophilus 와Bifidobacterium longum으로 제조한 유산균분말(각각 1.5×10 exp (9) cells)을 하루에 2회씩 2주동안 섭취하도록 하였다. 그리고 지원자 분변으로부터 균총수 변화와 부패산물인 암모니아, indole, skatole, p-cresole량을 측정하였다. 유산균의 투여 기간중에 분변내 bifidobacteria의 수가 8.78±0.39(log cfu/g feces±S.D)에서 9.27±0.29로 증가하였고(p<0.05) 투여 중지후에는 약간 감소하였으며, lactobacilli의 수는 6.15±0.80에서 6.76±0.48로 증가하였다(p<0.05). Enterococcus 균수는 투여 기간중에 6.66±0.80에서 7.72±0.40으로 증가하였다가 투여 중지후에는 감소하는 경향을 보였다. 그리고 혐기성균인 Bacteroides는 투여중에 8.45±0.34에서 9.15±0.21으로 증가하였으나(p<0.01), 유해균주로 알려진 Closridium(lecithinase negative)과 Staphylococcus 균수는 현저히 감소하였다. 그러나, 유산균 투여 실험기간인 6주 동안 분변내 암모니아, indole, skatole, p-cresole의 유의적인 농도변화는 없었다. To investigate the effects of lactic acid bacteria administration on fecal microflora and putrefactive metabolites in human being, Lactobacillus acidophilus and Bifidobacterium longum powder (1.5×10 exp (9) cells, respectively) was administrated to six healthy volunteers (average 28 years old) twice a day for 2 weeks. During the administration of lactic acid bacteria, the numbers of bifidobacteria, lactobacilli, and enterococci in feces were increased significantly, whereas those of Staphylococcus and lecithinase-negative Clostridium were decreased considerably. In addition, a number of anaerobic Bacteroides were increased. However, the contents of fecal ammonia and putrefactive metabolites (indole, skatole, p-cresole) were not changed during the administration.
안수미,윤기영,신연명,최경현,임근승,장문경,송윤미,공은희 고신대학교의과대학 2008 고신대학교 의과대학 학술지 Vol.23 No.2
Background : About 30% of patients in the hospital are under nourishment. A large portion of people are undernourished when they are admitted to the hospital and in the majority of these, undernutrition develops further while in hospital. Patient-Generated subjective global assessment(PG-SGA), a method of nutritional assessment based on clinical judgment, has been widely used to assess the nutritional status of adults for both clinical and research purposes. Modified PG-SGA can be used as a nutrition screening tool, and a comprehensive nutrition assessment is desirable for those who are malnourished. The purpose of this study is to develop a simple, reliable and valid nutrition screening program(NSP). Methods : We applied the nutrition screening program(NSP) to adult inpatients who are at risk of malnutrition using the Modified Patient-Generated subjective global assessment(PG-SGA) and objective assessment(electrical medical record data). Results : Therefore simple and beneficial NSP is developed for patients with severe malnutrition. Using NSP. nutritional information of the severe malnutrition patient should be shared with the physicians and they should be taken care of by clinical dietitians to improve their nutritional status. Conclusion : The Modified PG-SGA and nutrition screening tool are simple, reliable and valid nutrition screening program(NSP).
자기유변유체를 이용한 Fused silica glass의 미세연마공정특성에 관한 연구
이정원,김동우,신영재,장호수,조명우 한국공작기계학회 2007 한국공작기계학회 추계학술대회논문집 Vol.2007 No.-
A new, commercially available polishing process called magnetorheological fluid polishing is used to fabrication optical glass and bio-chip. This polishing process guarantees high polishing quality by controlling the fluid density electrically. The applied material in experiments is fused silica glass. Fused silica glass is widely used in the optical and biochip field because of high degree of purity. For MR polishing experiments, MR fluid was composed with DI-water, carbonyl iron and nano slurry ceria. The wheel speed and electric current were chosen as the variables for analyzing the characteristics of MR polishing process. In results, the surface roughness according to the variation of wheel speed and electric current was analyzed.
Shin, Myeong-Su,Choi, Hyun-Jong,Jeong, Kyeong-Hyeon,Lim, Jong-Cheol,Kim, Kyeong-Su,Lee, Wan-Kyu Korean Society for Food Science of Animal Resource 2012 한국축산식품학회지 Vol.32 No.1
The purpose of this study was to isolate bacteriocin-producing bacteria with antagonistic activities against pathogens from the intestines of pigs for probiotic use. Lactobacillus sp. AP 116 possessing antimicrobial property was selected from a total of 500 isolates. The AP 116 strain showed a relatively broad spectrum of inhibitory activity against Listeria monocytogenes, Clostridium perfringens, Pediococcus dextrinicus, and Enterococcus strains using the spot-on-lawn method. Bacteriocin activity remained unchanged after 15 min of heat treatment at $121^{\circ}C$ and exposure to organic solvents; however, it diminished after treatment with proteolytic enzymes. Maximum production of bacteriocin occurred at $34^{\circ}C$ when a pH of 6.0 was maintained throughout the culture during fermentation. According to a tricine SDS-PAGE analysis, the molecular weight of the bacteriocin was approximately 5 kDa. The isolate tolerated bile salts and low pH, and also induced nitric oxide (NO) in mouse peritoneal macrophages. Bacteriocin and bacteriocin-producing bacteria, such as Lactobacillus sp. AP 116, could be potential candidates for use as probiotics as an alternative to antibiotics in the pig industry.
Myeong Su Shin,Hyun Jong Choi,Kyeong Hyeon Jeong,Jong Cheol Lim,Kyeong Su Kim,Wan Kyu Lee 한국축산식품학회 2012 한국축산식품학회지 Vol.32 No.1
The purpose of this study was to isolate bacteriocin-producing bacteria with antagonistic activities against pathogens from the intestines of pigs for probiotic use. Lactobacillus sp. AP 116 possessing antimicrobial property was selected from a total of 500 isolates. The AP 116 strain showed a relatively broad spectrum of inhibitory activity against Listeria monocytogenes, Clostridium perfringens, Pediococcus dextrinicus, and Enterococcus strains using the spot-on-lawn method. Bacteriocin activity remained unchanged after 15 min of heat treatment at 121oC and exposure to organic solvents; however, it diminished after treatment with proteolytic enzymes. Maximum production of bacteriocin occurred at 34oC when a pH of 6.0 was maintained throughout the culture during fermentation. According to a tricine SDS-PAGE analysis, the molecular weight of the bacteriocin was approximately 5 kDa. The isolate tolerated bile salts and low pH, and also induced nitric oxide (NO) in mouse peritoneal macrophages. Bacteriocin and bacteriocin-producing bacteria, such as Lactobacillus sp. AP 116, could be potential candidates for use as probiotics as an alternative to antibiotics in the pig industry.