시판 녹차중 카테킨의 함량 분석

최성희,이병호,최홍대 동의대학교 기초과학연구소 1993 基礎科學硏究論文集 Vol.3 No.1

The four main tea catechin components (-)-epicatechin (EC), (-)-epigallocatechin (EGC), (-)-epicatechin gallate (ECg), and (-)-epigallocatechin gallate (EGCg) were analyzed quantitatively from commercial green teas by HPLC. Catechin of the most amounts in steamed and parched teas was EGCg (steamed 1st : 7.54%, parched 1st : 7.88%). Amounts of catechins decreased in the following order : EGCg$gt;EGC$gt;ECg$gt;EC. Almost same tendency of catechin component change of 1st tea and 2nd tea differed to harvesting time being observed in steamed and parched teas. In 2nd tea, amounts of EGCg increased more than in 1st tea. It seems that this change effects on the quality of tea taste.

오징어 가공중의 향기성분

이종호,최병대,이강호,류홍수 國立統營水産專門大學 附設 水産科學硏究所 1989 수산과학연구소보고 Vol.1 No.-

오징어 가공중의 향기성분의 변화를 알아보기 위하여 Nikerson형 연속추출장치(SDG)를 이용하여 시료의 향기성분을 추출한 후 중성, phenol성 염기성 및 산성획분으로 나누어 중성 및 염기성획분을 GC 및 GC-MS로 분석·동정한 결과 중성획분에서 31성분, 염기성 획분에서 7성분 분석·동정되었다. 오징어 가열시료에서 3-methylthiophene, 2-methyl-2-hexanethiol 등의 함황화합물이 검출되었고 탄소수 5인 1-penten-3-ol, 3-penten-2-ol, 4-me-thyl-3-pentanal 및 탄소수 3인 3-methyl-1,2-propan-diolo, 1-hydroxy-2-propanone과 bexanal,benzaldey-de를 비롯한 탄소수가 8과 9인 alclhol, ketone 등이 검출되었다. 염기성획분에서는 trimethylamine을 비롯한 6종의 pyrazine류가 분리·동정되었으며 2,5-dimethyl pyrazine, 2-ethyl-6-methyl pyrazine, 2,3,5-trimethyl pyrazine 등과 특히 2-ethyl-3,5-dimethyl pyrazine의 함량이 많아 염기성획분의 주된 향기성분으로 나타났다. Volatile components in natural and basic fraction of the steam distillation extraction method from squid during processing were analyzed by GC and GC-MS equipped with a fused silica capillary column. Thirty eight compounds were identified; they were 31 compounds from neutral, 7 compounds from basic fraction. The main components flavor of squid were 3-methylthiophene, 2-methyl-2-hexanthiol, 1-penten-3-ol, 3-penten-2-ol, 3-ethyl-1,4-hexadiene, 1-hydroxy-2-propanone, hexenal and benzaldehyde etc. Especially, (E, E)-3,-5-octadecanal were detected during the boiled. 2,5-dimethyl pyrazine, 2-ethyl-6-pyrazine, 2,3,5-trimethyl pyrazine and 2-ethyl-3,5-dimethyl pyrazine basic compounds, which have respectively a burnt and roasted odor, are considered to be important for the characteristic basic fraction of squid.

상아질-레진 계면의 공초점 현미경적 형태 및 전단결합강도와의 관계

손호현,조병훈,최낙원 大韓齒科保存學會 1999 Restorative Dentistry & Endodontics Vol.24 No.2

말쥐치 가공중 향기성분에 관하여

이종호,최병대,이강호,이근태,김태수 國立統營水産專門大學 附設 水産科學硏究所 1989 수산과학연구소보고 Vol.1 No.-

쥐치의 향기성분을 동정하기 위하여 Likerson형의 연속증류추출 및 탄산가스추출법을 이용하여 휘발성 성분을 동정하였다. 그 결과 중성획분에서 55 성분, pherol성획분에서 4 성분, 염기성획분에서 13 성분 및 ㅅ산성획분에서 10 성분이 분리·동정되었고 중성획분에서는 가열·배소 후 propanol, butanol, octanol, dodecanol등의 alcoholfb 그리고 pentanal, hexanal, 2-methyl-l-propanal, heptenal등의 aldehyde의 함량이 크게 증가하여 flavor 형성에 크게 기여할 것으로 생각되어 진다. 분리·동정된 phenol류는 분자량(m/e) 100~160 정도로 나타났으며, 염기성획분에서는 2-methylpyrazine, 2,5-dimethylpyrazine, 2-ethyl=3,5-dimethylpyrazine 등과 2-methylpyridine등이 동정되었다. 이들과 함께 중성획부에서 동정된 furan류가 가열온도의 증가와 함께 그 함량이 증가하였다. 산성획분에서는 배소시료 구분에서 isoaproic acid 및 caproic acid의 함량이 많았다. Volatile compounds were collected by simultaneous distillation extraction and carbon dioxide method, and analyzed by GC and GC-MS. The neutral fraction obtained from the whole steam volatile concentrate 55 kinds of components, phenolic fraction had 4 kinds of components, basic fraction had 13 kinds of components and 10 kinds of components were in acidic fraction. Alcohols, propanols, butanols, octanols, dodecanols etc. and aldehydes, pentanals, hexanal, 2-methyl-1-propanal, heptenal etc. were highly increased after boiled and roasted. And these compounds were contributed to formation of filefish flavor. The molecular ion peak of phenolic fraction was generally appeared in the range 100 to about 160. From the basic fraction, 2-methylpyrazine, 2,5-dimethylpyrazine, 2-ethyl-3,5-dimethylpyrazine and 2-methylpyridine were identified. The contents of basic compounds and furans obtained from the neutral fraction were increased at the higher heating temperature. The flavor of acidic fraction was influenced by the low molecular as isovaleric and valeric acid.

EC地域에 대한 投資家能性과 展望

馬鎭浩,崔炳龍,孫炳海,李東萬 慶北大學校 經商大學 經濟學科 1979 慶商大學論集 Vol.7 No.-

참깨에서 추출한 Sesamin 섭취가 혈청 지질 농도에 미치는 영향

윤명호,신준한,김한수,탁승제,최병일 아주대학교 1997 아주의학 Vol.2 No.2

Objectives : High serum cholesterol is one of the major risk factors of coronary artery disease. We investigated the lipid-towering property and the side effects of sesamin, an unsaturated fatty add extracted from sesame oil, for the primary prevention of coronary artery disease. Methods : The 37 patients (20 mates and 17 females) with hyperlipidemia, ages ranging from 22 years to 70 years old (48±12), who did not have atherosderotic diseases except essential hypertension were given three capsules of sesamin once daily for 6 weeks. The lipid profile of the patients were examined before and after sesamin treatment, and the patients were grouped according to the presence or abscence of hypertension, smoking habit and obesity. Result : Compared with pretreatment, the total cholesterol level of sesamin treated group decreased significantly (254.2±29.6 versus 241.6 34.0 ㎎/dl, p< 0.05). The level of LDL-cholesterol (162.6±24.3 versus 156.6±32.8 ㎎/dl)HDL- cholesterol (47.5±10.0 versus 47.0±8.7 ㎎/dl) and triglyceride (196.5±95.4 versus 179.3±96.7 ㎎/dl) and the ratio of LDL/HDL- cholesterol (3.6±0.9 versus 3.4±0.9) were not significantly different. The effect of cholesterol lowering property of sesamin was predominant in hypertensive, non- smoking and obese group (P< 0.05 vs pretreatment). The laboratory tests including complete blood cell counts, serum transaminases, total protein, albumin, blood urea nitrogen, creatinine and blood glucose did not change significantly. Conclusion : The lipid lowering effect of sesamin was statistically significant on the total cholesterol particularly with obese, non-smoking and hypertensive patients. There was no significant side effect during sesamin administration. Therefore, three capsules of sesamin as a single daily dose were effective in lowering total cholesterol and safe to administer in patients with hyperlipidemia.

鋪裝道路(Asphalt) 沿邊의 公害 物質이 蠶作에 미치는 影響 : (Ⅱ) 公害 物質이 繭層比率에 미치는 影響 (Ⅱ) The effect of air pollution on CoCoon layer ratio

文炳圓,金鎭雨,崔周鎬 진주산업대학교 1983 論文集 Vol.21 No.-

1) 鋪裝 沿邊의 公害物質이 견층비율에 큰 영향을 나타난다. 2) 春蠶, 秋蠶 晩秋蠶 飼育에 대한 公害의 影響은 매우 차가 심하여 견층 비율은 각 계절간에 다양하게 나타났다. 3) 桑園 肥培管理를 철저히하여 누에 生理에 유의하여 公害를 다소나마 防止해야겠다. 4) 綜合的인 公害 방지책을 硏究해야겠다. This study was Carried out to investigate the effect of airpollution substance on raising silkworms and the way reducing the damoge of a public nuisance. The result obtained were summarized as follows: 1. Imjury of air pollution substanel at the areaa asphalt road was increased more than Cocoon layer ratio of a hilly country. 2. As the effect of public hagard about the raising silkworms in the spring, fall and late­fall showed very difference, Cocoon lager ratio was varietal to the treatment of season all. 3. I think that we must reduce the damage of air pallution as think over the silkworm physiology.

養液濃度와 培地種類가 Black Olympia 포도나무의 生育과 果實品質에 미치는 影響

김희곤,김광수,김월수,임경호,최경주,김상철,김병삼 全南大學校 農業科學技術硏究所 1999 農業科學技術硏究 Vol.34 No.-

본 硏究는 養液栽培時 養液濃度와 培地種類가 대립계 포도품종인 Black Olympia의 生育과 果實品質에 미치는 영향을 구명하고자 하였다. 新梢長은 0.5배에서 1.5배의 양액농도에서 농도가 높을수록 길었고, 배지종류별로는 0.5배 농도에서는 밭흙과 퇴비를 1:1로 혼합한 배지에서 신초장이 길었으나 1.5배 농도에서는 오히려 짧게 나타났다. 節間長은 저농도의 양액농도에서는 밭흙과 퇴비를 혼합한 배지가 길었으나 1.5배의 고농도에서는 차이를 보이지 않았다. 각 배지에서 濃度가 높을수록 간경이 크게 나타났으며 배지종류간에는 펄라이트와 버미큘라이트 혼합배지가 밭흙과 퇴비를 혼합한 배지보다 컸으나 유의차가 없었다. 果房重은 각 배지에서 1.0배의 양액농도가 가장 무거웠으며 배지 종류간에는 밭흙과 퇴비를 혼합한 배지가 더 무거웠다. 糖度는 각 배지의 1.0배 양액농도가 높았으며 배지종류간에는 차이를 보이지 않았다. 果皮의 안토시아닌 함량은 배지별로 밭흙과 퇴비를 혼합한 배지에서 높았으며 양액농도별로는 1.0배에서 높게 나타났다. 收量은 펄라이트와 버미큘라이트를 혼합한 배지에서 양액농도가 높을수록 많았으나 밭흙과 퇴비 혼합배지에서는 1.0배의 농도에서 높게 나타났다. This study was carried out to investigate the effects of ionic strength and substrates on growth and fruit quality, and to establish fruit tree nutrient solution culture. The higher ionic strength showed the longer shoot length of grape. Among the substrates, upland soil+compost showed longer shoot length than perlite+vermiculite in 0.5 strength but shorter in 1.5 strength of Hoagland solution. Internode length was longer in upland soil+compost than in perlite+vermiculite in 0.5 strength, but there were no significance in 1.0 and 1.5 strength of Hoagland solution. Higher ionic strength and/or perlite+vermiculite of substrates showed tricker in trunk diameter than lower ionic strength and/or upland soil+compost. Cluster weight was heavier in 1.0 ionic strength than the others. Cluster weight in upland soil+compost was heavier than that of perlite+vermiculite. Soluble solids content of berry was the highest as much as 17.3。 Bx on 1.0 ionic strength of three strength, but there are no significances in substrates. Anthocyanin content of grape skin was higher in upland soil+compost than perlite+vermiculite, as well as the highest in 1.0 strength among three strengths. The higher ionic strength showed the more berry set. Each substrate showed uniformal berry set and growth. The best result in berry yields was obtained in 1.0 ionic strength with substrate of upland soil+compost in comparison to other treatments.

Most facile synthesis of Zn-Al:LDHs nanosheets at room temperature via environmentally friendly process and their high power generation by flexoelectricity

Choi, Min-Ju,Eom, Ji-Ho,Shin, Sung-Ho,Nah, Junghyo,Choi, Jin-Seok,Song, Hyun-A.,An, Hyesung,Kim, Hyun You,Pammi, S.V.N.,Choi, Goeun,Choy, Jin-Ho,Swathi, Ippili,Jella, Venkatraju,Park, Byeong-Ju,Choi, ELSEVIER SCIENCE B.V. AMSTERDAM 2018 Materials today energy Vol.2018 No.10

태양광 트래커의 수평회전 구조체 형식

최병호 ( Choi Byeong-ho ),한병호 ( Han Byeong-ho ),이하나 ( Lee Ha-na ),김정환 ( Kim Jeong-hwan ),김호수 ( Kim Ho-soo ) 한국구조물진단유지관리공학회 2014 한국구조물진단유지관리공학회 학술발표대회 논문집 Vol.18 No.1