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천마(Gastrodia elata Blume)의 항혈소판, 항혈전활성
백영숙,송재경,윤춘희,정교순,윤혜숙,Paik, Young-Sook,Song, Jae-Kyoung,Yoon, Chun-Hee,Chung, Kyo-Soon,YunChoi, Hye-Sook 한국생약학회 1995 생약학회지 Vol.26 No.4
MeOH extract of Gastrodia elata was fractionated to five solvent fractions, hexane fr (fr I), 90% MeOH fr (fr II), EtOAc fr (fr III), BuOH fr (fr IV) and $H_2O$ fr (fr V). Among the five fractions, fr II, III and IV showed platelet anti-aggregating effects against ADP or collagen induced rat platelet aggregation in vitro. Fr II , III and IV were also tested in vivo, in the mouse and rat models of thrombosis. Oral administration of fr II, III or IV enhanced the recovery from the thrombotic shock in the mouse model of thrombosis to 32-40% from 17% of recovery with the control group of mice. Treatment with fr II, III or IV also attenuated the sudden reduction in the blood platelet count following intravenous collagen injection to rat. The above results were indicative of the presence of anti-platelet and anti-thrombotic components in this plant.
TV홈쇼핑에서 경품 및 사은품행사가 의류상품 구매에 미치는 영향
홍병숙 ( Byung Sook Hong ),백인선 ( In Sun Paik ),이지연 ( Ji Yun Lee ),백영숙 ( Young Suk Paik ),윤혜원 ( Hae Woon Youn ),이정 ( Jung Lee ) 중앙대학교 생활문화산업연구소 [ 구-생활과학연구소] 2005 생활과학논집 Vol.22 No.-
The effect of advertisement itself have lowered due to excessive advertisements resulting from the recent fierce competition between firm. Comsumer are gradually becoming more sentitive to price and firms are expecting their sales to increase rapidly. In this situation, the TV home-shopping is showing high interests in sales promotion that can be said to be the short-term incentive to consumers. In addition to regular price discount, TV home-shopping is making practical use of the sales promotion method of providing consumers with premium or gift while maintaining normal price. Therefore, this study attempted to investigate what effect the premium event by the TV home-shopping had on comsumers` clothing purchase with a focus on the premium event taking root as the sales promotion technique of the TV home-shopping.
치자 Genipin과 아미노산의 청색소변환반응에 관한 물리화학적 연구
이재연,한태룡,백영숙,Lee, Jae-Youn,Hahn, Tae-Ryong,Paik, Young-Sook 한국응용생명화학회 1998 Applied Biological Chemistry (Appl Biol Chem) Vol.43 No.4
우리 나라에서 오랫동안 식용 및 황색 색소원으로 이용되어 온 치자(Gardenia jasminoides)열매로부터 iridoid glycoside인 geniposide를 분리, 정제한 후 ${\beta}-glucosidase$로 가수분해하여 얻은 genipin을 glycine, alanine, histidine, lysine, phenylalanine, glutamate 등 여섯 종류의 아미노산과 반응시켜 수용성 치자청색소로 전환되는 과정을 규명하였다. Genipin이 아미노산과 반응하여 청색소가 되는 과정에서 pH의 영향을 알아보기 위하여 여러 pH에서 반응을 시켜본 결과 청색소 생성의 최적조건은 pH 7.0 이었고, pH 3.0 조건에서는 청색소가 전혀 생성되지 않았으며, pH 12.0 조건에서는 미량의 청색소만 생성되었다. 아미노산의 종류에 따라서도 청색소 생성량 및 색감에 차이가 있었는데 $Iysine({\lambda}_{max}=573\;nm),\;glycine({\lambda}_{max}=595 \;nm),\;phenylalanine({\lambda}_{max}=602\;nm),\;alanine({\lambda}_{max}=595\;nm)$에 비해 $histidine({\lambda}_{max}=601\;nm)$과 $glutamate({\lambda}_{max}=601\;nm)$의 경우에는 비교적 적은 양의 청색소가 생성되었다. 청색소 생성 속도상수를 여러 온도$(60,\;70,\;80,\;90^{\circ}C,\;pH\;7.0\;phosphate$ 완충용액)에서 구하였는데, 염기성 아미노산이 중성 및 산성 아미노산에 비해 생성속도가 빨랐다. 이들 값으로부터 Arrhenius 활성화에너지를 계산한 결과 $glycine(E_A=9.8\;kcal/mol)$이 다른 아미노산$(E_A=13.3{\sim}15.4\;kcal/mol)$에 비해 특히 작은 값의 활성화에너지를 나타내었다. Genipin was obtained from hydrolysis of geniposide isolated from gardenia fruits with ${\beta}-glucosidase$. Reaction of genipin with glycine, alanine, histidine, lysine, phenylalanine and glutamate in aqueous buffer solution converted colorless starting materials to blue pigments. Effect of pH for the formation of blue pigments was tested using UV/Vis spectrophotometer. The optimum pH for the formation of blue pigments was 7.0. No pigment and trace amounts were formed at acidic (pH 3.0) and alkaline (pH 12.0) conditions, respectively. The amount and tincture of blue color were distinct with different amino acids. In contrast with lysine $({\lambda}_{max}=573\;nm)$, glycine $({\lambda}_{max}=595\;nm)$, phenylalanine $({\lambda}_{max}=602\;nm)$ and alanine $({\lambda}_{max}=595\;nm)$, the reaction of genipin with histidine $({\lambda}_{max}=601\;nm)$ and glutamate $({\lambda}_{max}=601\;nm)$ produced relatively small amounts of blue pigments. Rate constants for the formation of blue pigments from genipin with amino acids at various temperatures $(60,\;70,\;80,\;90^{\circ}C,\;pH\;7.0\;phosphate\;buffer)$ were obtained. Rate constants of genipin with basic amino acids were larger than neutral or acidic amino acids. Arrhenius activation energies of the formation of blue pigments indicated that activation energy of glycine $(E_A=9.8\;kcal/mol)$ was especially lower than those of other amino acids $(E_A=13.3{\sim}15.4\;kcal/mol)$.
윤혜현(Hye Hyun Yoon),백영숙(Young Sook Paik),김준범(Jun Beom Kim),한태룡(Tae Ryong Hahn) 한국응용생명화학회 1995 Applied Biological Chemistry (Appl Biol Chem) Vol.38 No.6
Anthocyanins in Korean pigmented rice(Oryza sativa var. Suwon 415) were analyzed to develop value-added natural pigment from rice. The pigment extracted with 1% HCl in methanol was determined as anthocyanins by characteristic absorption spectra in UV-visible ranges showing maximum absorbance at 280 ㎚ and 530 ㎚. Two aglycones from acid-hydrolyzed anthocyanins were identified as cyanidin and malvidin by their R_f values in several developing solvents, spectral properties, and ¹H-NMR analysis. Sugar moiety was determined as monoglucose by paper chromatography. The main anthocyanins in Korean pigmented rice were tentatively identified as cyanidin-3-glucoside and malvidin-3-glucoside.
조만호(Man Ho Cho),백영숙(Young Sook Paik),윤혜현(Hye Hyun Yoon),한태룡(Tae Ryong Hahn) 한국응용생명화학회 1996 Applied Biological Chemistry (Appl Biol Chem) Vol.39 No.4
The major color component of a Korean pigmented rice (Oryza sativa var. Suwon 415) was purified with Amberlite XAD-7 column and preparative paper chromatography. The purified pigment was determined as anthocyanin by paper chromatography, UV/Vis and NMR spectroscopy. The λ_(max) of the purified anthocyanin on UV/Vis spectrum were 529 ㎚ and 281 ㎚. The A_(440)/A_(525) value of the purified anthocyanin was 23% suggesting the presence of 3-glycosidic structure. The aglycone from acid hydrolysis showed bathochromic shift (18 ㎚) in the presence of AlCl₃ indicating that the anthocyanidin contained free adjacent hydroxyl groups such as cyanidin, delphinidin, petunidin or luteolinidin. The sugar moiety obtained from acid hydrolysis was determined as glucose by paper chromatography. The NMR spectra showed that the aglycone was cyanidin and the sugar was β-D-glucopyranose. Thus, the chemical structure of the purified anthocyanin was identified as cyanidin 3-O-β-D-glucopyranoside.
홍화적색소 Carthamin 의 효과적인 분리 및 화학구조 분석
김준범(Jun Beom Kim),조만호(Man Ho Cho),한태룡(Tae Ryong Hahn),백영숙(Young Sook Paik) 한국응용생명화학회 1996 Applied Biological Chemistry (Appl Biol Chem) Vol.39 No.6
The major red color component from Carthamus tinctorius was efficiently isolated by a modified new method of traditional procedure and column chromatographic technique. After removing yellow pigments by washing Carthamus flowers with water and methanol, the red pigment was extracted with 0.5 M Na₂CO₃, and precipitated with aqueous citrate. The pigment was further isolated and purified with cellulose adsorption and Sephadex LH-20 column chromatography. The purified red pigment was decomposed at about 300℃, and its R_f value on silica gel in BAW(n-BuOH : HOAc : H₂O=4 : 1 : 5) was 0.56. UV/Vis spectrum of the red pigment showed λ_(max) at 519, 372, 311, 244 ㎚ and its IR spectrum showed wide and strong absorption near 3400 cm(-2) indicating characteristic hydroxyl groups. ¹H and ^(13)C NMR spectra showed that it contained two enolized β-triketone, two p-hydroxycinnamoyl moieties, a methine, and two glucosyl moieties. On the basis of spectroscopic evidences, the chemical structure of the red pigment was identified as 6-β-D-glucopyranosyl-2-[[3-β-D-glucopyranosyl-2,3,4-trihydroxy-5-[3`-(4$quot;-hydroxyphenyl)-1`-oxo-2`-propenyl]-6-oxo-1,4-cyclohexadien-1-yl]methylene]-5,6-dihydroxy-4-[3`-(4$quot;-hydroxyphenyl)-1`-oxo-2`-propenyl]-4-cyclohexene-1,3-dione, carthamin.
1,1-Diphenyl-2-methyl-1,2-propanediol의 산촉매 자리옮김
백영숙 慶熙大學校 1994 論文集 Vol.23 No.-
1,1-Diphenyl-2-methyl-1,2-propanediol 1 was synthesized to study the effect of solvents on the acid-catalyzed rearrangement reaction. Compound 1 was treated with concentrated sulfuric acid, acetic anhydride with trace amounts of sulfuric acid, trifluoroacetic acid, and various concentrations of trifluoroacetic acid/acetic acid. The products of compound 1 in these solvents system were examined by NMR spectra. The product ratios of 3,3-diphenylbutanone 2 and α,α-dimethylpropiophenone 3 were dramatically changed in different acidic media or even in different ratios of trifluoroacetic acid/acetic acid solution; the ratio of methyl migration to phenyl migration was 97:3 in trifluoroacetic acid and 59:41 in 30/70 trifluoroacetic acid/acetic acid. It was concluded that the effect of solvent is very important factor for the study of pinacol rearrangement.