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Aspergillus niger CAD 1 의 부분 정제된 β- Galactosidase 에 의한 갈락토올리고당의 생성
김창렬(C . R . Kim),이석래(S . R . Lee),이용규(Y . K . Lee) 한국축산학회 1990 한국축산학회지 Vol.32 No.6
This study has attempted to seek the efficient way for the formation of galactooligosaccharides by the partially purified β-galactosidase from Aspergillus niger CAD 1. The results are summarized as follows; In the case of ion exchange purification step, the purification fold and recovery of β-galactosidase from A, niger CAD 1 were 8.4 and 24.8%, respectively. The overall yield of the partially purified enzyme was 6.3% of acetone fraction and the final enzyme preparation was purified 48.07 times. After the final purification step of Sephadex G-100 gel filtration, the purification fold and recovery of enzyme were 48.07 and 6.3% respectively. The molecular weight of the purified β-galactosidase after Sephadex G-100 gel filtration was estimated to be 106,000 by SDS-PAGE. The rate of oligosaccharide formation during hydrolysis of lactose was influenced by the concentration of lactose and enzyme, reaction time, and temperature. When cheese whey containing 20% lactose was treated with the partially purified β-galactosidase(2.0 units/ml) at 45℃ for 4hrs, the maximum conversion of lactose to oligosaccharides was about 18.9% by weight of total lactose. TLC, HPLC, and paper chromatogram of hydrolyzates in cheese whey containing 20% lactose by the partially purified β-galactosidase showed the formation of 1,3 and 8 of galactooligosaccharides, respectively.
죽초액의 첨가가 육용오리의 생산성 및 육질에 미치는 영향
국길,김정은,정광해,김재필,고홍범,이재일,김창렬,김광현,Kook, K.,Kim, J.E.,Jung, K.H.,Kim, J.P.,Koh, H.B.,Lee, J.I.,Kim, C.R.,Kim, K.H. 한국가금학회 2002 韓國家禽學會誌 Vol.29 No.4
This experiment was conducted to investigate the effect of the supplemental Bamboo vinegar on production and meat quality of broiler ducks for 35 days. One hundred broiler ducks were divided into 4 groups of 25 ducks. Dietary levels of bamboo vinegar 0%, 1%, 2% and 4% were added to experimental diets ot each of the groups. The wei핌t gain and feed intake of ducks f3d with supplemental bamboo vinegar significantly high compared to those of the control. The carcass rate of the ducks fed with supplemental Bamboo vinegar 1% and 2% were increased compared to that of control, but the ducks fed with 4% treatment was decreased in carcass rate. The lipid and cholesterol content of breast meat of the ducks f3d bamboo vinegar 2% and 4% were significantly decreased (P<0.05). The color values in redness and yellowness were increased by supplemental Bamboo vinegar. Palmitic acid of fatty acid composition in breast meat was decreased by supplemental bamboo vinegar groups, whereas linoleic acid was increased, this difference was especially observed in supplemental Bamboo vinegar 2% (P<0.05). The odor, appearance and taste of sensory evaluation were improved by supplemental bamboo vinegar, especially in supplemental bamboo vinegar 1% and 2% (P<0.05). The results of this study indicate that the supplemental bamboo vinegar 1% and 2% may improve the production and meat quality of broiler ducks.
난관액, 난관배양액 및 난포액이 돼지정자의 운동성과 수정능 획득에 미치는 영향
문승주,이경호,김호,은대숙,김창렬,김광현,나진수,김재홍 全南大學校 農業科學技術硏究所 1997 農業科學技術硏究 Vol.32 No.-
본 연구는 돼지 정자의 운동성과 첨체반응에 대한 난관액, 난관배양액 및 난포액의 효과를 조사하였다. 수정능획득배양액에 난관액(10%)을 첨가 공배양했을 때 정자의 운동성은 처리구에서 유의적으로 높았다(P<0.05). CTC 염색방법으로 정자의 첨체반응을 조사한 결과 난관액과 난포액이 첨가된 수정능획득 배양액에서 1.5, 3, 4.5시간동안 전배양을 실시하였을 때 정자의 첨체반응이 대조구에 비하여 유의적으로 높았으며(P<0.05), 난관배양액에서 1.5, 3, 4.5시간동안 전배양을 실시하였을때도 대조구에 비하여 정자첨체반응이 유의적으로 높았다(P<0.05). 이러한 연구결과는 난관과 난포액등에 함유되어있는 어떤인자가 정자의 운동성과 첨체반응율을 높힌다고 사료된다. The effects of oviductal fluid, oviductal conditioned medium and follicular fluid on porcine sperm mortility and capacitation were studied. The addition of oviductal fluid, oviductal conditioned medium and follicular fluid to the prefertilization medium increased sperm mortility(P<0.05). Chloroterracycline(CTC) flourescence patterns were used to determine incidence of acrosome reaction. The proportion of acrosome reaction increased when spermatozoa were exposed for 1.5, 3 and 4.5h to oviductal fluid and follicular fluid(P<0.05). In sperm-POCM(porcine oviductal conditioned medium) co-culture period of 4.5 h, acrosome reaction rates was higher than other groups(P<0.05). These results suggest that the factor(s) in secreation from oviduct and follicular fluid increased sperm mortility and acrosome reaction.
난관배양액이 처녀발생유기된 돼지난포란의 체외발달에 미치는 영향
문승주,이경호,김호,김창렬,은대숙,김광현,나진수,김재홍 全南大學校 農業科學技術硏究所 1997 農業科學技術硏究 Vol.32 No.-
본 연구는 난관배양액이 돼지수정란의 체외발달에 미치는 효과를 규명키 위하여 수행하였다. 돼지 미성숙 난포란은 TCM-199, Ham's F-10 그리고 Whitten's 배양액에 10% 난포액과 호르몬(PMSG : 10IU/㎖, HCG : 10IU/㎖)을 첨가 20시간 배양하고 호르몬을 첨가하지 않는 배양액에서 20시간 추가 배양하여 총 40시간동안 배양하여 체외성숙을 유도하였다. 체외성숙후 0.1% hyaluronidase로 난구세포를 제거하고 15% FCS가 함유된 TCM-199으로 3회 세척하고 TCM-199에 15% FCS와 10% ethanol 혼합액에 세척한 난자를 옮겨 10분간 배양 처녀발생을 유기하였다. 처녀발생 6시간후 전핵형성율은 체외성숙배양액으로 TCM-199을 사용했을 때 56.4%, Ham's F-10의 경우 58.3%, Whitten's 배양액의 경우 74.0%를 보였다. 처녀발생 유기 48시간째 난할율은 TCM-199을 사용했을 때 45.7%, Ham's F-10에서 45.4%, Whitten's배양액에서 39.2%를 보였으며 세종류의 배양액에 POCM을 첨가 배양했을 때 TCM-199에 44.8%, Ham's F-10에서 45.4%, Whitten's배양액에서 43.7%로 나타났다. 처녀발생육 난자를 96시간 체외배양시킨 결과 상실배 발달율이 POCM을 첨가 했을 때 첨가하지 않은 시험구에 비하여 유의적으로 높았다(P<0.05) The effect of porcine oviductal conditioned medium(POCM) on in vitro development of chemically activated porcine oocytes was studied. Porcine oocytes were cultured in TCM-199, Ham's F-10 and Whitten's medium with hormonal supplements for 20h and 40h additional culture without hormonal supplements. After in vitro maturation, the denuded oocytes were washed 3 times with TCM-199 contaning 15%(v/v) ethanol to induce pathenogenetic activation. At 6h after activation, pronuclea formation rates were 56.4% in TCM-199, 59.3% in Ham's F-10 and 74.0% in Whitten's maturation medium. At 48h after activation, 45.7%, 45.4% and 39.2% of oocytes claved in TCM-199, Ham's F-10 and Whitten's culture medium, respectively. And 44.8%, 45.5% and 43.7% of oocytes were claved in TCM-199, Ham;s F-10 and Whitten's culture medium supplemented with POCM, respectively. The rates of moular were higher in culture medium with POCM than without POCM at 96h after activation.(P<0.05)