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Quantitative Determination of ABS from Mixture of Anionic and Nonionic Detergents by NMR
최광훈,권순자,Koang-Hoon Choe,Sun-Ja Kwon Korean Chemical Society 1983 대한화학회지 Vol.27 No.6
음이온세제와 비이온세제의 혼합물에서 alkylbenzene sulfonate 계통의 음이온 세기가 NMR법에 의해서 정량되었다. 음이온세제와 비이온세제의 혼합물에 대한 NMR 스펙트럼에서, 벤젠 그룹은 6.5∼8ppm에서 중첩된 피크를 보여주나 sampling 후의 벤젠 그룹은 7∼8ppm에서 두개의 doublet을 보여준다. 검량선은 음이온세제의 벤젠그룹과 초산의 메칠그룹의 상대적인 면적비에 의해서 작성되었다. (초산은 내부표준물로 사용되었다.) Amounts of alkylbenzene sulfonate (ABS) in the mixtures of anionic and nonionic detergents were determined by nuclear magnetic resonance (NMR) method. In the NMR spectrum of anionic and nonionic detergents, benzene group showed peaks overlapping at 6.5∼8ppm, but after sampling, benzene group showed two doublet at 7∼8ppm. Calibration curve was obtained by relative ratio of area for benzene group in anionic detergent to that for methyl group in acetic acid(acetic acid was used as the internal standard).
High Performance Liquid Chromatography 를 이용한 Cefatrizine ${\cdot}$ Propylene Glycol 의 분리 및 정량
권순자,이기창,최광훈,Kwon, Shoon-Ja,Lee, Ki-Chang,Choe, Koang-Hoon 한국응용과학기술학회 1989 한국응용과학기술학회지 Vol.6 No.1
The fast separation and determination of cefatrizine${\cdot}$propylene glycol and inmpurities - TACA: 7-amino-3-(1,2,3-triazol-4-yl)thiomethyl-3-cephem-4-carboxylic acid and 7-ACA; 7-amino cephalosporanic acid - was performed by the high poerformance liquid chromatography using octadecyl siland (ODS) column. Methanol and ammonium phosphate buffer [$0.03M(NH_4)_2\;HPO_4$, (pH 7.5)] was used analyze, as eluent. The experimental value of the contents of cefatrizine${\cdot}$propylene glycol and impurities agree with the theoretical value of those.
Houttuynia cordata 및 Saururus chinensis의 정유성분에 관한 연구
최광훈,권순자 慶熙大學校 1989 論文集 Vol.18 No.-
Chemical components in the essential oil of Saururus chinensis and Houttuynia cordata growing in Korea were separated and identified by gas chromatograph and GC-mass spectrometry, and constituents of Saururus chinensis were very different from those of Houttuynia cordata, that is, the former was mainly composed of sesquiterpenoids(C_15H_24, M. W: 204) and safrole, while the latter monoterpenoids and lipids.
한국에서 자생하는 삼백초와 식물들의 항균력에 관한 연구
최광훈,권순자 慶熙大學校 1994 論文集 Vol.23 No.-
Antimicrobial acivity of the water extract of Saururus chinensis and Houttuynia cordata was compared with that of sythethic antibiotical such as ampicillin trihydrate, amoxicillin trihydrate and cefradin against several bacilli. While it was found that Saururus chinensis extract of 0.5 mg/ml had antimicrobial activity equal to 55% cefradin activity against Bacillus pumilus. 53% of ampicillin trihydrate activity against Bacillus subtilis and 60% cefradin activity against Alcaligenes feacalis. Houttuynia cordata extract of 0.1 mg/ml was found to have 60% ampicillin trihydrate activity and 80% amoxicillin trihydrate activity both against Bacillus pumilus, and 60 - 67% ampicillin trihydrate activity and 60 -67% cefradin activity both against Bacillus subtilis. In general it turned out that Houttuynia cordata extract had higher antimicrobial activity than Saururus chinensis extract.
한국에서 자생하는 Saururaceae의 성분에 관한 연구(4)-Houttuynia cordata의 Flavonoid 성분
정덕상,최광훈,권순자 濟州大學校 基礎科學硏究所 1992 基礎科學硏究 Vol.5 No.1
Four flavonoids such as quercitrin, rutin, hyperin and isoquercitrin were isolated from the aerial parts of Houttuynia cordata growing in Korea, and identified by the comparison of their TLC, GC and HPLC chromatogram with those of pure authentic compounds, and reynoutrin and afzerin reported were not detected.