국산 아피오스(Apios americana Medikus) 감자의 식품학적 성분분석

김영현 ( Y. H. Kim ),이성갑 ( S. K. Rhee ),이애리 ( A. R. Lee ),김단비 ( D. B. Kim ),이옥환 ( O. H. Lee ) 강원대학교 농업생명과학연구원(구 농업과학연구소) 2014 강원 농업생명환경연구 Vol.26 No.1

본 연구에서는 국내산 아피오스 감자의 식품학적 성분을 분석하고자 동결건조 된 시료의 일반성분, 아밀로오스, 식이섬유, 비타민 B2, 비타민 C 및 색도를 분석하였다. 분석결과, 아피오스 감자의 조단백질, 조지방, 조회분및 탄수화물 함량은 각각 13.79%, 3.03%, 5.10% 및 78.08%를 차지하고 있는 것으로 나타났다. 아피오스 감자의 아밀로오스 함량은 9.34%이었고, 식이섬유 함량은 20.38%로 나타났다. 아피오스 감자의 비타민 B2 및 비타민 C의 함량은 각각 0.07 mg/100 g, 74 mg/100 g이었으며, Hunter 색체계를 이용하여 측정한 아피오스 감자의 명도(L값), 적색도(a값), 황색도(b값)는 각각 84.08 ± 0.01, 0.10± 0.02, 5.19 ± 0.01이었다. 본 연구는 아피오스 감자의 식품성분을 분석한 것으로 아피오스 감자의 식품가공 및 건강기능식품 이용을 위한 기초자료로 활용이 가능한 것으로 판단된다. This study was to investigate the food components of apios pota b values of apios potato were 84.08 ± 0.01, 0.10 ± 0.02, 5.19 ± 0.01, respectively. The contents of vitamin B2 and vitamin C were 0.07 mg and 74 mg, respectively. In addition, amylose and dietary fiber contents were 9.34 and 20.38% respectively. These result indicate that apios potato has a rich dietary fiber and nutritional components as a food ingredient and functional food materials.

Combined effect of organic acids and supercritical carbon dioxide treatments against nonpathogenic <i>Escherichia coli</i>, <i>Listeria monocytogenes</i>, <i>Salmonella typhimurium</i> and <i>E. coli</i> O157:H7 in fresh pork

Choi, Y.M.,Kim, O.Y.,Kim, K.H.,Kim, B.C.,Rhee, M.S. Blackwell Publishing Ltd 2009 Letters in applied microbiology Vol.49 No.4

<P>Abstract</P><P>Aims: </P><P>To evaluate the effectiveness of organic acids and supercritical carbon dioxide (SC-CO<SUB>2</SUB>) treatments as well as their combined effect for the reduction of nonpathogenic <I>Escherichia coli</I> and three pathogenic bacteria in fresh pork.</P><P>Methods and Results: </P><P>The different treatment conditions were as follows: (i) treatment with acetic (1%, 2% or 3%) or lactic acid (1%, 2% or 3%) only, (ii) treatment with SC-CO<SUB>2</SUB> at 12 MPa and 35°C for 30 min only and (iii) treatment with 3% acetic or lactic acid followed by treatment with SC-CO<SUB>2</SUB>. Within the same organic acid concentration, the lactic and acetic acid treatments had similar reductions. For the combined treatment of lactic acid and SC-CO<SUB>2</SUB>, micro-organism levels were maximally reduced, ranging from 2·10 to 2·60 log CFU cm<SUP>−2</SUP> (<I>E. coli</I>, 2·58 log CFU cm<SUP>−2</SUP>; <I>Listeria monocytogenes</I>, 2·60 log CFU cm<SUP>−2</SUP>; <I>Salmonella typhimurium</I>, 2·33 log CFU cm<SUP>−2</SUP>; <I>E. coli</I> O157:H7, 2·10 log CFU cm<SUP>−2</SUP>).</P><P>Conclusions: </P><P>The results of this study indicate that the combined treatments of SC-CO<SUB>2</SUB> and organic acids were more effective at destroying foodborne pathogens than the treatments of SC-CO<SUB>2</SUB> or organic acids alone.</P><P>Significance and Impact of the Study: </P><P>The combination treatment of SC-CO<SUB>2</SUB> and organic acids may be useful in the meat industry to help increase microbial safety.</P>

오류역전파 알고리즘을 이용한 사출성형 금형 냉각회로 최적화

이병옥(B. O. Rhee),태준성(J. S. Tae),최재혁(J. H. Choi) 한국생산제조학회 2009 한국생산제조학회지 Vol.18 No.4

The cooling stage greatly affects the product quality in the injection molding process. The cooling system that minimizes temperature variance in the product surface will improve the quality and the productivity of products. The cooling circuit optimization problem that was once solved by a response surface method with 4 design variables. It took too much time for the optimization as an industrial design tool. It is desirable to reduce the optimization time. Therefore, we tried the back-propagation algorithm of artificial neural network(BPN) to find an optimum solution in the cooling circuit design in this research. We tried various ways to select training points for the BPN. The same optimum solution was obtained by applying the BPN with reduced number of training points by the fractional factorial design.

전화기 케이스 외관의 Weldine 제거를 위한 금형 급속 가열-냉각 기술 개발

차백순(B.S.Cha),박형필(H.P.Park),이상용(S.Y.Lee),김옥래(O.R.Kim),이승욱(S.W.Lee),이병옥(B.O.Rhee) 한국소성가공학회 2008 한국소성가공학회 학술대회 논문집 Vol.2008 No.10

사출금형 냉각회로 자동최적화를 위한 설계변수 감소 방안

이병옥(B. O. Rhee),최재혁(J. H. Choi),태준성(J. S. Tae) 한국생산제조학회 2009 한국생산제조학회지 Vol.18 No.4

The injection mold cooling circuit optimization was studied with a response surface method in the previous research. It took so much time to find an optimum solution for a large product due to an extensive amount of calculation time for the CAE analysis. In order to use the optimization technique in the actual design process, the calculation time should be much reduced. In this study, we tried to reduce the number of design variables with the concept of the close relationship between the depth and the distance of cooling channel. The optimum ratio of the distance to the depth of cooling channels for a 2-dimensional problem was 2.0 so that the optimum ratio was again sought out for 4 large automotive parts. Therefore, the number of design variables for the cooling circuit optimization can be reduced in half, resulting in much faster running time for the optimization as a design tool.

사출 성형의 가소화 과정의 공기유입에 관한 연구

이병옥(B. O. Rhee),박호근(H. G. Park),김봉주(B. J. Kim) 한국생산제조학회 2017 한국생산제조시스템학회 학술발표대회 논문집 Vol.2017 No.4

복수캐비티 금형의 충전균형조절을 위한 수지도달시점 측정기술 개발

이병옥(B. O. Rhee),이은진(E. J. Lee),이영주(Y. J. Lee),차백순(B. S. Cha),박형필(H. P. Park) 한국정밀공학회 2008 한국정밀공학회 학술발표대회 논문집 Vol.2008 No.11월

다층 사출성형 공정에서 1차 층의 표면조도가 층간 접합에 미치는 영향

이병옥(B. O. Rhee),김봉주(B. J. Kim) 한국생산제조학회 2016 한국생산제조시스템학회 학술발표대회 논문집 Vol.2016 No.04

대용량 원전 전력계통 안전성 평가를 위한 과도안정도 해석 프로그램 개발

이병일(B. Rhee),오성균(S.K. Oh),김건중(K.J. Kim),주운표(O.P. Zhu) 대한전기학회 2001 대한전기학회 학술대회 논문집 Vol.2001 No.5

제사용수(製絲用水)의 경도성분(硬度成分)과 해서촉진제(解舒促進劑)와의 관계(關係)

최병희 ( B. H. Choe ),이용우 ( Y. O. Rhee ) 한국잠사학회 1971 한국잠사곤충학회지 Vol.13 No.1

본 논제는 제사공장에서 사용하고 있는 용수중에 비교적 많이 함유되어 있는 경도성분 및 기타 무기성분이 해서촉진제 특히 1965년 본인이 개발한 "Seracol 100"의 sericin 용해성에 어떻게 영향을 미치는가를 구명하기 위해 수행된 것인바 얻어진 결과를 요약하면 다음과 같다. 1) 경도 5°dH 이하에서는 경도성분의 차이에 관계없이 "Seracol 100" 첨가구에서 sericin 용해량이 많았으나 10°dH 이상에서는 성분의 종류에 따라 차이가 있었고 (MgCO3)4·Mg(OH)2 이외에는 일반적으로 경도가 높아짐에 따라 sericin 용해량은 감소하였으며 해서촉진제의 농도에 관한 효과로서 "Seracol 100"의 1000배 희석구와 2000배 희석구 사이에는 큰 차를 인정할 수 없었다. 2) 경도성분별 sericin 용해성에 미치는 차이는 "Seracol 100" 처리구에서는 Mg경도>Ca경도이나, 무처리구에서는 Mg경도>Ca경도로 되었다. 3) 경도성분의 염류형태별 sericin 용해성에 미치는 영향은 "Seracol 100" 무처리구에서 NO3>Cl>SO4이었고 "Seracol 100" 처리구에서는 경도 10°dH 이하에서 NO3->SO4(-2)>Cl-이고, 15°dH 이상에서는 SO4(-2)>NO3(-2)>Cl-이었다. 4) Ca 및 Mg 경도성분 이외의 용존염류와 해서촉진제의 작용 사이에는 "Seracol 100"을 처리한 경우 중금속염(Fe, Al, Cu, Mn)의 증가는 sericin 용해성을 감소시켰으며 기타염류의 증가는 sericin 용해성에 큰 영향을 주지 못했고 alkali 성 금속염의 증가는 용해성을 현저히 증가시켰다. 5) "Seracol 100" 증가에 의한 경도성분 및 염류용수의 색변화는 Ca염용수가 Mg염용수에서 보다 컸으며 기타 영용수중 Al, Fe염용수 이외에는 변화가 거의 없었으나 특히 Fe염용수에서의 색변화는 "Seracol 100" 처리구가 무처리구에서 보다 크고 그 수용에 각각 처리된 생사의 색택은 이와 반대로 나타난 것으로 보아 "Seracol 100"이 Fe+2의 활성화를 저해하여 생사의 흡착을 억제하는 작용을 가지고 있다고 사료된다. 6) "Seracol 100"이 삼투력에 미치는 영향에 있어서 용수의 상승력은 처리 후 2시간까지는 "Seracol 100" 1000배 희석구>2000배 희석구>무처리구 이었으나, 2시간 후부터 6시간 까지 에서는 2000배 희석구>1000배 희석구>무처리구이고 이후는 처음과 같은 순으로 되었다. 7) 해석촉진제와 경도변화와의 관계에서 단일경도성분용수에 견층을 처리하는 경우 "Seracol 100"을 희석하면 그 용수에서의 경도변화는 거의 없으나 희석하지 않으면 용수의 경도는 약간 높아진다는 점에서 "Seracol 100"이 용수중의 경도성분 이외에도 견층중의 경도성분용출을 감소시키는 작용을 하는 것으로 추측된다. This experiment was conducted, how making use of "Seracol 100", a kind of nonionic surface active reagent, during cocoon cooking and silk reeling process which is mainly used in Korea and developed by one of the authors since 1965. Main purpose of the experiment is to investigate the influence of the activity of the reelability aid reagent on various degree of hardness component and various salts which are contained in filature water being used by silk factories now. Specifically, it was tried to determine the effects of the reelability aid reagent added to each sample water of artificially differentiated the degree of hardness component upon sericin solubility. Some of the major findings are summarized as follows. 1. "Seracol 100", with below 5°dH water, increased sericin solubility in each sample water, but above 10°dH the effect of it shows a significant relationship with the different degree of hardness component. Besides the component (MgCO3)4ㆍMg(OH)2, generally, the higher the degree of hardness in the water, the less the amount of desolved sericin in the water showed. There is little or no difference between 1000 times diluted "Seracol 100" water and 2000 times diluted "Seracol 100" water in terms of sericin solubility. 2. The different kind of degree of hardness component shows a significant relationship with sericin solubility, In case use of "Seracol 100", Mg hardness component affected on the sericin solubility more than Ca hardness. But in the control, contrary to this, that is Ca hardness component did more than Mg hardness. 3. The different kind of salts in degree of hardness component show a significant relationship with sericin solubility. In the control water, nitrate is the greatest among salts affecting on sericin solubility, next chloride and sulfate are in order. In case of "Seracol 100" water, chloride is the least among salts, below 10°dH, next sulfate and nitrate are in order, and above 15°dH, next nitrate and sulfate are in order. 4. In case of "Seracol 100" water, the more contained heavy metal salts (Fe, Al, Cu, Mn) in the water, the less sericin solubility showed. It is found that there is little or no difference among other salts in terms of sericin solubility. But alkaline metal salt remarkably increased sericin solubility. 5. In case of "Seracol 100" water, tinting of the water was affected by Ca salts more than by Mg salts. Among other salts, only Al and Fe affected on the tinting of the water, specifically, in view of the fact that "Seracol 100" water increase the tinting of Fe salt water, but decrease the tinting of raw silk. It is thought that "Seracol 100" deter Fe+2 from absorbing to raw silk by deteriorating the activity of Fe+2. 6. "Seracol 100" have the effect on osmosis of the water, After treatment until 2hrs the osmosis of 1000 times diluted "Seracol 100" water is the greatest, next orders are 2000 times diluted "Seracol 100" and control. From 2 hrs to 6 hrs the osmosis of 2000 times diluted water is the greatest, next orders are 1000 times diluted water and control. After 6 hrs the osmosis of the water is the same order as above. 7. In view of tile fact that "Seracol 100" have the effect to control the degree of hardness during the treatment of cocoon layer in the water, it is thought that, in varying degree of hardness in the water, there is a significant relationship between "Seracol 100" and degree of hardness components in cocoon layer.