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Hue, Jin-Joo,Baek, Dong-Jin,Lee, Yea Eun,Lee, Ki Nam,Nam, Sang Yoon,Yun, Young Won,Jeong, Jae-Hwang,Lee, Sang-Hwa,Yoo, Han Sang,Lee, Beom Jun The Korean Society of Veterinary Science 2007 大韓獸醫學會誌 Vol.47 No.4
The approval of use of certain food-grade phosphates as food additives in a wide variety of meat products greatly stimulated research on the applications of phosphates in foods. Although phosphates have never been classified as antimicrobial agents, a number of investigators have reported that phosphates have antimicrobial activities. Phytic acid is a natural plant inositol hexaphosphate constituting 1-5% of most cereals, nuts, legumes, oil seeds, pollen, and spores. In this study, we investigated antibacterial activities of sodium phytate (SPT), sodium pyrophosphate (SPP), sodium tripolyphosphate (STPP) on Salmonella typhimurium in tryptic soy broth and in row meat media including chicken, pork and beef. SPY, SPP and STPP at the concentrations of 0.5 and 1% dose-dependently inhibited the growth of S. typhimurium in tryptic soy broth at various pHs. The antibacterial activities of SPT and STPP were the stronger than that of SPP. In chicken, pork, and beef, SPT, SPP and STPP at the concentrations of 0.1, 0.5 and 1.0% significantly inhibited the bacterial growth in a dose-dependant manner (p < 0.05). The antibacterial activities of SPT, SPP, and STPP were more effective in chicken than beef. SPT and STPP at the concentration of 1% reduced the bacterial count by about 2 log units. The addition of SPT, SPP and STPP at the concentration of 0.5% in meats increased the meat pHs by 0.28-0.48 units in chicken, pork, and beef. These results suggest that SPT and STPP were equally effective for the inhibition of bacterial growth both in TSB and meat media and that SPT can be used as an animal food additive for increasing shelf-life and functions of meats.
Effect of the SOOP Shampoo on Hair Growth Promotion in An Alopecia Model of C57BL/6 Mice
Lan Li, Jin-Joo Hue, Yea-Eun lee, Sul-Hye Lyu, In-Jeoung Baek, Jung-Min Yon,Sang Yoon Nam, Young Won Yun, Byeongwoo Ahn,Beom Jun Lee 충북대학교 동물의학연구소 2005 Journal of Biomedical and Translational Research Vol.6 No.2
본문참조
양홍지 ( Hong Ji Yang ),윤여백 ( Yea Baek Yoon ),박태욱 ( Tae Wook Park ),박용석 ( Yong Seok Park ),서창섭 ( Chang Wub Seo ),임병무 ( Byung Moo Rim ) 한국가축위생학회 1992 韓國家畜衛生學會誌 Vol.15 No.2
Fecal Examination for survey of natural prevalence of Balantidium coli was performed on 1,080 healthy bred pigs in Korea, and the positive rate was 56.2%. In order to observe if Balantidium coli might be a secondary invader after certain initiation of the intestinal lesions, the piglet groups preinfected with the protozoa experimentally were treated with salmonella cholerasuis, Trichuris, cold stress, HC1, and immunosuppressive drug respectively, but no relatios was found between them. Also the protozoa were not deteceted from the intestinal lesions spontaneously formed of 107 pigs which were checked in the slaughter house. According to the above results, Balantidium coli is not directly associated with the formation of any lesions in the pig`s intestine.
고정층 반응기에서의 고온건식 탈황공정 모사에 관한 연구
김성현,신상백,윤여일 한국화학공학회 1998 Korean Chemical Engineering Research(HWAHAK KONGHA Vol.36 No.5
석탄가스에 포함되어 있는 황화수소를 제거하기 위한 우수한 탈황제로 아연계 및 철계 탈황제를 선정하였고, 이들 탈황제의 성능을 모사가스를 이용하여 고정층에서 400-700℃ 온도범위에서 평가하였다. 그리고, 고정층 실험에 의해 구해진 황화수소 파괴곡선을 grain mode과 unreacted core model을 이용하여, 유효확산계수를 조절 가능한 변수로 선택하여 fitting 하였다. 두 모델 모두 실험에 의해 구해진 파괴곡선과 비교적 잘 일치되는 파괴곡선을 보여주며, 이를 통해 각 탈황제에 대한 유효확산계수를 Arrhenius식 형태로 나타냄으로써 생성물층을 통한 확산에 대한 겉보기 활성화 에너지와 빈도인자를 구하였다. Zinc and iron-based sorbents were considered as prime candidate sorbents to remove H₂S in coal-derived gas. The performance of sorbents was tested at temperature range of 400-700℃, in a fixed-bed reactor using the simulated coal gas, Ten, the effective product-layer diffusion coefficient, D_e was estimated from the best-fittings of the experimental breakthrough curves and simulated breakthrough curves by the grain model and unreacted care model, respectively. These two models showed that the predicted and experimental breakthrough curves were in goad agreement. Apparent, activation energies and frequency factors were obtained for the product-layer diffusion coefficient of various sorbents by plotting in Arrhenius farm.
양홍지 ( Hong Ji Yang ),윤여백 ( Yea Baek Yoon ),박태욱 ( Tae Wook Park ),김성훈 ( Seong Hun Kim ),최은영 ( Eun Young Choi ),서창섭 ( Chang Sub Seo ) 한국가축위생학회 1993 韓國家畜衛生學會誌 Vol.16 No.1
In order to detection of the intestinal parasites, fecal samples were taken from broiler(n=262), laying hen(n=244), parent stock(n=207) and native stock(n=287) in Chonbuk province. The prevalence and identification of intestinal parasites were determined by the fecal examination using the floatation and/or sedimentation methods and microscopical examination, respectively. The results were obtained as follows: 1. The detection rate of parasite-eggs from 4 flocks(total=1,000) was 65.7%. 2. In the breed and type of breeding, infection rate of parasite-eggs was detected 84.0% as native stock(floor breeding, 241 chicken), 79.7% as parent stock(floor breeding, 165 chickens), 73.3% as broiler(floor breeding, 192 chicken) and 24.2% as laying hen(cage breeding, 59 chicken), in order. 3. In the concern of mixed infection such as single, double and triple, the rate was 55.1%, 8.7% and 1.9%, respectively. 4. Ten kinds of infective eggs were isolated from 657 fecal sample of 4 flock. They were classified 51.1% as Eimeria spp., 12.7% as Ascaridia galli, 5.1% as Capillaria spp., 4.1% as Strongyloides avium, 2.3% as Heterakis gallinarum, 0.5% as Hymenolepis spp., 0.3% as Railleina spp. and 0.2% as Syngamus spp., Trichostrongilus spp., or Choanoteania spp., single or in combination.