http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
조광연(Kwang Yun Cho) 한국식품영양과학회 1989 한국식품영양과학회지 Vol.18 No.1
쌍화차의 제조공정중 추출은 용매를 50% etanol로 하고 그 첨가량은 원료량의 10배로 하였을 때 가장 수율이 높았고, 추출온도 및 시간은 90℃ water bath에서 8시간 추출하는 방법이 가장 효과적으로 생산비를 절감할 수 있었다. 또한 특수성분의 HPLC분석 결과는 50% etanol로 추출한 제품이 물로 추출한 것보다 높은 양을 나타내었고 특히 Decursinol성분의 경우에 물추출로는 38.59 PPM, 50% etanol추출로는 298.02PPM으로 가장 현저한 차이를 나타내었다. During the preparation of Ssang Wha tea it was observed that the highest yield was obtained when it was extracted with 50% ethanol, of which guantity was added 10 times more then that of Sample. The most effective extraction temperature and time was 90℃ and 8hours on the water bath, which was resulted in saving of production cost. From the HPLC Analysis, it was also observed that product extracted with 50%ethanol give higher yield than that of exfrac ted with water.
제초제 스크리닝을 위한 계면활성제 - 아세톤 수용액의 용매성 , 전착성 및 약해
유주현,조광연 ( Ju Hyun Yu,Kwang Yun Cho ) 한국환경농학회 1995 한국환경농학회지 Vol.14 No.3
For studying the role of acetone and surfactant in solution, and selecting the best surfactant for spray solution in herbicide screening, the solubilizability of 6 nonionic surfactant-acetone aqueous solutions to 18 herbicide technicals, their foliar wettability and phytotoxicity to soybean and rice plant were tested and evaluated. The solubilizability of surfactant-acetone aqueous solutions to herbicide technicals was dependent on the acetone content of solutions, and was less affected by nonionic surfactant. Foliar wettability of the surfactant solutions was good to soybean, but only polyoxyethylene lauryl ether HLB 13.6(LE-13.6) solution showed good wettability to rice plant within the concentration range of no phytotoxicity. Tween 20(0.1 %), LE-13.6(0.01 %) and polyoxyethylene nonylphenyl ether HLB 16.0(0.01 %) solutions didn`t induce phytotoxicity to soybean, and most of the surfactant solutions didn`t induce phytotoxicity to rice plant. There was no surfactant that showed superior emulsifiability to various herbicide technicals, good foliar wettability to plants, and no phytotoxicity, but LE-13.6 was better than others.
버즘나무방패벌레 (Corythucha ciliata Say)의 생태적 특성 및 살충제감수성
송철,조광연,Song, Cheol,Cho, Kwang-Yun 한국생명과학회 2000 생명과학회지 Vol.10 No.2
To understand the biological characteristics of Corythucha ciliata occurring in Korea, developmental periods and its susceptibility to several insecticides were examined under growth chamber condition at $25^{\circ}C$. It took 11.1 day from egg to hatch. And duration of each stage up to the 5th nymph after hatching was 4.0, 2.1, 2.0, 2.9, and 4.0 days, respectively. Total duration from egg to adult was 26.1 days, preoviposition period was 12.2 days, and average number of eggs laid by a female was 83.0. Sex ratio of female was 51.6% and lifespan of female adult was 43.2% days. LC50 value of deltamethrin and esfenvalerate were 0.8 and 0.9 ppm, respectively. Insecticidal effects were better in pyrethroids than organophosphates and carbamates.
새로운 2-이미노티아졸린 유도체의 합성과 항균활성 (II)
남기달,최경자,조광연,한호규,Nam, Kee-Dal,Choi, Gyung-Ja,Cho, Kwang-Yun,Hahn, Hoh-Gyu 한국응용생명화학회 1998 Applied Biological Chemistry (Appl Biol Chem) Vol.41 No.6
신 농약을 개발할 목적으로 선도화합물인 티아졸린의 곁가지를 변화시킨 새로운 2-이미노티아졸린 유도체를 합성하여 항균활성을 검색하였다. 디키틴과 아닐린으로부터 제조된 아세토아세트아닐리드 유도체를 브롬화하여 상응하는 감마-브로모아세토아세트아닐리드 유도체를 얻고 이를 티오우레아 유도체와 반응시켜 2-이미노티아졸린 유도체를 합성하였다. 2-이미노티아졸린의 항균활성을 검색하고자 6 종류의 대표적인 식물 병원균에 대한 시험(in vivo)을 하였다. 2-페노치환체들은 벼도열병균에 대하여 250 ppm에서 탁월한 항균성을 나타냈다. 1차 활성시험에서 방제가 90이상으로 평가된 것만 선발하여 2차 활성시험(농도저하 시험)을 수행하였다. 2-아릴기에 전자주게보다 전자 끌게, 전자끌게 중에서도 할로겐치환체가 도입된 경우에 고 활성을 나타냈으며 불소원자가 치환된 경우에 활성이 비교적 양호하였다. A synthesis and the screening of new 2-iminothiazolines (IV) of which structures are modified based on a lead compound, thiazoline for development of new agrochemical fungicide were described. Bromination of acetoacetanilides (I) which were prepared by the reaction of diketene with anilines gave the corresponding ${\gamma}-bromoacetoactanilide\;(II)$. Treatment of II with N-phenyl-N'-methyl thiourea (III) afforded IV, structure of which was confirmed by various spectroscopic methods. Antifungal activity of the new IV was tested against six kinds of typical plant diseases (in vivo). The IV with aromatic substituents showed remarkable activity against the Pyricuraria oryzae at 250 ppm in primary screening. The candidates with control value over 90% in primary screening were selected and further tested for second screening at lower concentrations. The IV which has an electron-withdrawing substituent such as halogen, especially fluorine in aryl group showed a higher activity as compared to those with electron-donating group and meta substituent was for optimal position.
농약 살포작업의 생력화를 위한 투척처리용 점보제의 연구개발에 관하여
유주현,임희경,조광연 ( Ju Hyun Yu,He Kyoung Lim,Kwang Yun Cho ) 한국환경농학회 1996 한국환경농학회지 Vol.15 No.1
Recent development in Japan on jumbo formulation of pesticides for paddy application by hand throw was reviewed. In addition, the diffusion of liquid formulations in water was examined to establish the research strategy for the jumbo formulation. Research on jumbo formulation in Japan has been focused on gas-generating formulations and self-emulsifiable formulations. Although continuous efforts to minimize the problem of pesticide deposit on the treated site have been made for the gas-generating formulations, much work is still needed to establish a generally acceptable formulation method and to commercialize a herbicide formulation. The self-emulsifiable jumbo formulations have recently been investigated. These formulations could simply be processed and showed relatively high biological efficacy. The emulsifiable concentrate was more diffusible than the suspension concentrate in water. The diffusion of the emulsifiable concentrate was not greatly disturbed by floating obstacles. And the diffusion rate was high when the specific grabity was lower than one.
김동우(Dong Woo Kim),조광연(Kwang Yun Cho),배정설(Jung Surl Bae) 한국식품영양과학회 1983 한국식품영양과학회지 Vol.12 No.3
本硏究는 效率的이고 合理的인 즉석米飯의 製法을 얻고자 製法에 따라 만든 즉석米飯에 對한 理化學的 性狀을 究明한 結果 다음과 같다.<br/> 1. 즉석米飯의 吸收力은 冷凍熱風乾燥한 것이 20℃물에서 20分後에 水分含量 61.5%였고 100℃물에서 5分後에 63%로서 가장 吸收力이 빨랐다.<br/> 2. 즉석米飯의을 20℃물에서 30分間 浸漬後 밥으로 再生한 米飯의 物性値 중 硬度와 씹는 힘은 典型的인 炊飯米에 比하여 10~20%높았고 彈力性과 付着性은 35~40%나 낮아 큰 차이를 보였고 100℃물에 10分間 浸漬하여 밥으로 再生한 米飯의 物性値는 典型的인 炊飯米에 比하여 3~5%의 近似値을 나타냈으며 冷凍熱風乾燥한 것이 가장 양호한 값을 보였다.<br/> 3. 즉석米飯을 20℃물에서 30分間 浸漬하여 밥으로 再生한 것을 官能檢査한 結果 典型的인 炊飯米을 100으로 基準하였을 때 71~76의 값을 나타냈고 100℃물에서 10分間 浸漬시켜 밥으로 再生한 것은 93~94의 값을 보였고 冷凍熱風乾燥한 것이 맛, 香氣 및 組織의 食感 等에서 가장 좋았고 알코올 脫水乾燥한 것은 色에서 가장 좋았다. Physicochemical properties of instant rice prepared by hot-air drying, alcohol dehydration and freeze-hot air drying were studied.<br/> Freeze-hot air drying rice showed the fastest rehydration rate as well as the most desirable textural characteristics. Sensory evaluation suggested that the freeze-hot air drying rice also had more desirable taste, flavor and texture. However color was more desirable in alcohol dehydrated rice.