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올방개(Eleocharis kuroguwai Ohwi)를 이용한 전통약주의 품질특성에 관한 연구
정철(Chul Cheong),이인숙(In-Sook Rhee),이시경(See-Kyung Lee),강순아(Soon Ah Kang) 한국식품영양과학회 2008 한국식품영양과학회지 Vol.37 No.6
Aspergillus sp.와 Rhizopus sp.의 누룩과 효모(Saccharomyces cerevisiae)로 접종한 후, 올방개의 함량을 0, 10, 20, 30, 40, 50%로 담금하여 얻은 술덧의 성분과 향기성분 그리고 관능검사로 비교한 결과는 다음과 같다. 술덧의 주정도는 발효 3~5일 사이에 가장 많은 알코올 발효가 일어나 15.3~16.4%로 나타냈으며 올방개가 10% 함유한 실험구가 16.4%로 가장 높았으며, 올방개의 함량이 증가할수록 주정도가 낮아져 50% 올방개 약주의 주정도는 15.3%였다. 아미노산도는 0.90~1.20%이었으며, 올방개 10%와 20% 첨가구에서 아미노산도가 1.20%로 가장 높았으며, 환원당은 올방개 10%일 때 8.2로 가장 낮았고, 이는 올방개의 함량이 증가할수록 점점 높아졌다. 올방개를 첨가한 술덧의 유기산은 구연산, 호박산, 사과산, 초산이 검출되었으며 초산 함량이 160.3±8.0~253.3±20.3 ㎎/100 mL로 가장 많이 검출되었다. 총유기산은 20% 술덧이 330.9±28.6 ㎎/100 mL로 가장 높게 확인되었으며 50% 술덧이 17.14±9.3 ㎎/100 mL로 가장 낮게 분석되었다. 각 술덧별 주요 아미노산은 알라닌, 프롤린, 히스티딘, 페닐알라닌, 라이신, 글루타믹산 등이었으며 총 17종이 검출되었고 올방개 20% 첨가한 술덧에서 총 아미노산이 341.1±30.7 ㎎%로 가장 많은 양이 검출되었다. 효모 수는 발효종료 7일에 4.4~6.2×108 cells/mL가 검출되었다. 각 술덧별 향기성분은 흡착법(SPME)으로 분석한 결과 10종이 검출되었으며, 주요 향기성분은 에틸아세테이트, 이소아밀알코올, 이소뷰틸알코올로 올방개 20% 술덧에서 향기성분이 높게 검출되었다. A new sake fermented using a mixture of Aspergillus sp., Rhizopus sp. and yeast (Saccharomyces cerevisiae) containing allbanggae was developed in this study. The effects of the allbanggae contents (0~50%) in the sake on the qualitative and sensory properties and flavor components were investigated. The fermentation with allbanggae, especially in sake containing 10% allbanggae, showed the highest level of alcohol (15.3~16.4%), whereas the amount of alcohol decreased with increasing allbanggae contents. Amino acidity in sake containing 10% and 20% allbanggae indicated the highest levels (0.90~1.20%). In addition, it was observed that the sake containing 10% allbanggae showed the smallest level of reducing sugars, which were increased with increasing allbanggae ratio. Furthermore, various organic acids in the sake were detected such as citric, succinic, malic and acetic acids, among which the acetic acid showed the highest amount (160.3±8.0~253.3±20.3 ㎎/100 mL). The major amino acids detected in the sakes were alanine, proline, histidine, phenylalanine, lysine and glutamic acid. The sake containing 20% allbanggae indicated the highest amino acids amount among the allbanggae ratios. Based on these results, it was concluded that the sake containing 20% allbanggae could be successfully commercialized.
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테트라싸이크린 항생제를 담체로 이용한 막전극의 전위차 특성
백종규,이인숙,팽기정,Baek, Jong-Gyu,Rhee, In-Sook,Paeng, Ki-Jung 한국전기화학회 2006 한국전기화학회지 Vol.9 No.3
본 연구에서는 테트라싸이크린 항생제를 양이온선택성 전극의 담체로 사용한 막전극을 제작하고 알칼리 및 알칼리 토금속에 적용하여 전위차 감응도를 조사하였다. 제작된 전극은 지용성 첨가제의 유무와 관계없이 $Ca^{2+}$ 이온에 대해서 거의 이상적인 전위차 감응도를 나타내었다. 또한 $Mg^{2+}$를 제외한 다른 양이온에도 이상적인 네른스트값에 80% 이상의 감응도와 $10^{-5}$ 이하의 검출한계를 나타내었다. 수명, 감응시간, 재현성 등도 이온선택성 전극에 응용하기에 문제가 없었다. The main component governing selectivity in ion-selective electrodes and optodes is the ionophore. For this reason, a member of natural products that possess selective ion-binding properties have long been sought after. By applying this principle, the performance of tetracycline used as neutral carriers for cation selective polymeric membrane electrode was investigated. The cation ion-selective electrode based on tetracycline gave a good Nernstian response of 26.6 mV per decade for calcium ion in the activity range $1x10^{-6}M$ to $1x10^{-2}M$ with and without lipophilic additives. The optimized cation ion-selective membrane electrodes displayed very comparable potentiometric responses to various mono and di-valent cations of alkali and alkaline earth metal ions except $Mg^{2+}$.
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3차 대학병원 응급실의 운영 효율화를 위한 연구 : 1개 대학병원 환자흐름과 시간활동 분석자료를 중심으로
이인숙,오은경,이중의,윤여규 大韓應急醫學會 1999 대한응급의학회지 Vol.10 No.1
Background : One of the problem in emergency room(ER) of university hospital is over-crowdedness that causes exhaustion of medical resources (personnel, device, space) and disturbes optimal treatment. Methods : This is an evaluative research for the purpose of promoting efficient operation system in ER of university hospital. Results : 1) In 387 visitors, mean age was 47.5 years, and male to female ratio 1.21:1. As the specialty in change, 28.9% of them were internal medicine, 9.9% necrology, and 8.5% neurosurgery. 24% of visitors have come by ambulances. The patients stayed for average 16.1 hours. the admission rate of ER visitors was 33.4%, 60.3% returned home after some management. 2) The visitors had various causes without correlation between the severity of conditions and the choice of high level hospital ER. They perceived their situations emergent in 78.4%, but after triage only 25.6% were classified emergent. 48.6% of the visitors were the patients of out-patient department of this hospital due to chronic diseases. 3) The patients were assessed within 9.5 minutes after arrival at ER by nurse and within 34 minutes by doctor. If they were in need of consultation to second/third department, they waited for 141.5/460 minutes respectively to see the doctor. They waited for 59.9/ 52.7 minutes to get routine laboratory sampling/ radiologist examination respectively. 4) Every 2.3 new patients visited this ER per hour. Average 63.2 patients were than taken over to next shift of nurse duty, and 60% of them had chronic degenerative diseases. Conclusion : The causes of overcrowding in ER of the university hospital were ① huge number of patients at out-patient department of the hospital. ② shortage of beds compared to the number of patients waiting admission. ③ too many kinds of procedures performed in ER, ④ cooperation failure among doctors of different specially, and ⑤ no definite criteria of admission/discharge into/from ER. To solve these problems, conversion of ER management policy from complete examination and treatment to more simple and rapid one is necessary.
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