Clostridium botulinum 포자의 방사선저항과 NaCl 민감성과의 관계

이종욱(Chong - Ouk Rhee),김성기(Sung - Kih Kim) 한국미생물생명공학회 1976 한국미생물·생명공학회지 Vol.4 No.1

창평쌀엿의 저장온도에 따른 품질특성의 변화

이종욱(Chong-Ouk Rhee),박근형(Keun-Hyung Park),석호문(Ho-Moon Seog) 한국식품과학회 1992 한국식품과학회지 Vol.24 No.5

생태적 축산폐수 처리 및 재활용 연못시스템의 폐수처리수준

양홍모,이종욱 ( Hongmo Yang,Chong Ouk Rhee ) 한국환경농학회 1998 한국환경농학회지 Vol.17 No.1

A model of pond system is developed for treatment and recycling of excreta from twenty-five adult dairy cattle. It is composed of wastewater treatment ponds and small fish ponds. Those are three facultative ponds in series; primary-secondary-tertiary pond and these are designed to rear carps without feeding. A pit is constructed at the bottom of primary pond for efficient sludge sedimentation and effective methane fermentation. It is contrived to block into it the penetration of oxygen dissolved in the upper layer of pond water. The excreta from the cattle housed in stalls are diluted by water used for clearing them. The washed excreta flow into the pit. The average yearly BOD_5 concentration of influent is 398.7㎎/ℓ. That of the effluent from primary, secondary and tertiary pond of the system is 49.18, 27.9, and 19.8㎎/ℓ respectively. Approximate 88, 93, and 95 % of BOD5 are removed in each pond. The mean yearly SS concentration of influent is 360.5㎎/ℓ. That of the effluent from each pond is 53.4, 45.7, and 32.7㎎/ℓ respectively. Approximate 86, 88, and 91% of SS are removed in each pond. The BOD_5 concentration of secondary and tertiary pond can satisfy 30㎎/ℓ secondary treatment standard. The SS concentration of effluent from tertiary pond, however, is slightly greater than the standard, which results from activities of carps growing in the pond. The average yearly total nitrogen concentration of influent is 206.8㎎/ℓ and that of the effluent from each pond is 48.6, 30.8, and 21.0㎎/ℓ respectively. Approximate 74, 88, and 90% of total nitrogen are removed in each pond. The mean yearly total phosphorous concentration of influent is 20.7㎎/ℓ and that of the effluent from each pond is 5.3, 3.2, and 2.1㎎/ℓ respectively. Approximate 97, 98, and 99% of total phosphorous are removed in each pond. The high removal of nitrogen and phosphorous results from active growth of algae in the upper layer of pond water. Important pond design parameters for southern part of Korea -- areal loading of BOD5, liquid depth, hydraulic detention time, free board, and pond arrangement -- are taken up.

한국의 전통식 쌀엿 공정 개선을 위한 시뮬레이션

정종훈,이종욱 ( Jung Hoon Chung,Chong Ouk Rhee ) 한국산업식품공학회 1997 산업 식품공학 Vol.1 No.1

쌀밥의 텍스쳐와 고형물 손실에 미치는 수세의 영향

김두운,정해옥,이종욱 ( Du Woon Kim,Hae Ok Jung,Chong Ouk Rhee ) 한국산업식품공학회 1998 산업 식품공학 Vol.2 No.1

수원 415호 유색미 전분의 이화학적 특성

이유석,조지미,이종욱,Lee, You-Seok,Cho, Ji-Mi,Rhee, Chong-Ouk 한국응용생명화학회 2003 한국농화학회지 Vol.46 No.2

유색미는 다양한 천연색소를 함유하고 있으며 항산화기능의 효과가 알려져 이용이 증가하고 있는 추세이다. 이러한 이용을 증대시키고자 유색미 전분을 이용한 식품의 제조에 영향을 주는 여러 가지 이화학적 특성들에 대해 조사하였다. 수원 415호 유색미 전분의 평균입경과 중심입경은 각각 $6.27{\mu}m$와 $5.23{\mu}m$, 일반미 전분은 각각 $5.43{\mu}m$와 $4.71{\mu}m$로 수원 415호 유색미 전분의 입경이 일반미 전분 보다 더 컸다. 수원 415호 유색미와 일반미의 물결합능력은 큰 차이를 보이지 않았으며, 요오드 반응은 일반미 전분이 수원 415호 유색미 전분보다 조금 높게 나타났다. 수원 415호 유색미 전분과 일반미 전분의 고유점도는 각각 107.5ml/g, 145.8ml/g으로 일반미 전분의 고유점도가 더 높은 값을 보였으며, X선 회절도에 의한 결정형은 전형적인 A형을 보였으며 상대결정도는 수원 415호 유색미 전분과 일반미 전분이 각각 0.43, 0.41로 수원 415호 유색미 전분이 큰 값을 보였다. 팽윤력과 용해도는 온도가 상승함에 따라 증가하였으나 수원 415호 유색미 전분이 일반미 전분 보다 각각의 온도에서 팽윤력과 용해도가 더 낮았다. 신속점도계를 이용하여 측정한 전분의 농도별 호화특성 측정결과 전분의 농도가 높아질수록 호화온도가 낮아지는 경향이었으며, 수원 415호 유색미와 일반미 전분의 최고 점도와 최저 점도는 각 농도에서 큰 차이를 보이지 않아 식품재료로 사용시 일반미와 큰 차이를 보이지 않을 것이라 생각된다. Physicochemical and gelatinization properties of Suwon-415 pigmented rice starch were determined. The median and mean particle sizes of Suwon-415 pigmented rice starch were 5.23 and $6.27\;{\mu}m$, whereas those of non-glutinous rice starch were 4.71 and $5.43\;{\mu}m$ respectively. Water-binding capacity, iodine reaction and intrinsic viscosity of Suwon-415 pigmented rice starch were lower than those of non-glutinous rice starch. X-ray diffraction patterns showed traditional A type of cereals and relative crystalline of both samples showed no difference. Peak viscosity, breakdown and setback were increased with increasing weight of starches.

키토산으로부터 키토산올리고당 제조에 관한 비교 연구

박노동(Ro Dong Park),이종욱(Chong Ouk rhee),이현철(Hyun Chul Lee),조종수(Chong Su Cho),조도현(Do Hyun Jo) 한국키틴키토산학회 1999 한국키틴키토산학회지 Vol.4 No.2

N/A The purpose of this study was to develop the high functional water vapor permeable/waterproof coated nylon fabric by using soluble chitosan powder in polyurethane coating solution(WSP fabric). Water entry pressure, water vapor transmission, moisture regain, static change, tearing strength, peeling strength, sewability of fabric, and reduction ratio of WSP fabric were measured for the study. The results of this study were as follows :1) The physical properties of WSP fabric treated by the use of a wet coating method were not changed very much. However, the water entry pressure decreased slightly with increasing concentration of soluble chitosan, while water vapor transmission increased slightly. In addition, tearing strength remained constant.2) Moisture regain of WSP fabric increased with the concentration of soluble chitosan . However, that of WSP fabric remained constant at above 1% concentration of soluble chitosan. Static change and peeling strength decreased with increasing the concentration of soluble chitosan. Sewability was improved with increasing concentration of soluble chitosan due to the reduction of friction on surface of WSP fabric.3) Over 90% reduction ratio of WSP fabric treated by the use of both dry and wet coating method was maintained with only 1% of chitosan even after 10 cycles of dry cleaning. Reduction ratio of WSP fabric treated by the use of a wet coating method was not changed, but reduction ratio of the sample treated by the use of a dry coating method decreased to 60% after 10 cycles of laundering.

대두의 침지중 고형물의 용출속도에 미치는 침지온도의 영양

이영헌(Yung-Heon Lee),이종욱(Chong-Ouk Rhee),조상준(Sang-June Joe) 한국식품과학회 1986 한국식품과학회지 Vol.18 No.6

한국산(韓國産) 식용(食用) 해조류(海藻類)의 성분(成分)에 관(關)한 연구(硏究) -I. 수종(數種) 식용(食用) 갈조류(褐藻類)의 구성(構成) 성분(成分)에 대(對)하여-

이인규,심상칠,조한옥,이종욱,Lee, In-Kyu,Shim, Sang-Chil,Cho, Han-Ok,Rhee, Chong-Ouk 한국응용생명화학회 1971 Applied Biological Chemistry (Appl Biol Chem) Vol.14 No.3

한국산(韓國産) 식용해조류(食用海藻類)의 구성성분(構成成分)을 조사(調査)하기 위하여 10종(種)의 식용(食用) 갈조류와 2종(種)의 비식용(非食用) 갈조류를 재료로 하여 일반화학성분(一般化學成分)과 각종 무기염류를 분석 검토하였다. 시료(試料)는 1970년(年) 10월(月) $28{\sim}30$일(日) 제주도에서 채집(採集)하였다. 1) 일반성분(一般成分) 중(中) 수분(水分)은 건물량(乾物量)의 $14{\sim}16%$를 함유하고, 조단백질은 대부분(大部分)이 16% 정도여서 육상야생 식용식물의 경우와 비슷하였다. 조지방(粗脂肪)은 $0.7{\sim}2.0%$ 정도이고, 조섬유(粗纖維)는 $3{\sim}8%$였으나 조회분(粗灰分)은 $9.17{\sim}16.89%$로 매우 높은 함량을 나타내고 있다. 환원당으로 정량한 유리 단당류는 $0.27{\sim}2.49%$를 포함하고 있다. 2) 무기염류 중에서는 Ca이 가장 많아서 $1.73{\sim}2.51%$였고, S이 그 다음으로 $1.0{\sim}1.8%$, Na 과 K이 약 1% 정도였다. Mg과 옥소(沃素)는 약 $0.1{\sim}1%$였고 미량원소에 속하는 Fe과 Zn은 약 $0.01{\sim}0.03%$, Cu와 Mn은 $0.001{\sim}0.005%$ 정도였다. 3) 식용성(食用性) 갈조류와 비식용성(非食用性)인 것 사이에 그 구성성분상(構成成分上) 특기할 차이는 없었고 더욱이 본 실험 결과만으로는 이들의 분류(分類) 내지(乃至) 계통학적(系統學的) 유연관계를 설명해 줄 수 있는 성분상의 차이는 찾아 볼 수 없었다. 4) 해조류가 식품(食品)으로서 지니는 가치는 지방 단백질 및 탄수화물의 함량보다 각종(各種) 무기염류가 다량(多量)으로 또한 다양(多樣)하게 들어 있는 점(點)에 있다고 할 것이다. In order to investigate chemical components of edible marine algae in Korea, the present work is carried out with ten edible and two non-edible species of brown algae, collected from Cheju-island during October, 28-30 in 1970. Among the general components, water content is about 14-16% to dry weight and the crude protein about 16%, which are almost similar in content compared with several non-cultivate edible land plants. The content of crude fat is about 0.7-2.0%, and that of crude fiber about 3-8%, while the content of crude ash is 9.17-16.89%. The last one is more than two times in content compared with the land plants. The reducing sugar is about 0.27-2.49% in general. On the other hand, among the minerals Ca content is the most abundant, 1.73-2.51%, and the next is S, 1.0-1.8%. Mg and I are around 0.1-1%, while K and Na are about 1% in content. Among the micro-elements, Fe and Zn are about 0.01-0.03%, and Cu and Mn 0.001-0.005% in content. There is no special significant difference in chemical components between the edible and non-edible species of brown algae. Moreover, so far as the present investigation is concerned, there can be found no significant inter-species relationship on the taxonomical or phylogenetical points of view, considering their components.

The Chewing Efficiency of Occlusal Stabilization Appliances by Anatomy of the Occlusal Surface

임영관,최충호,김재형,이종욱,김병국,Im, Yeong-Gwan,Choi, Choong-Ho,Kim, Jae-Hyeong,Rhee, Chong-Ouk,Kim, Byung-Gook Korean Academy of Orofacial Pain and Oral Medicine 2005 Journal of Oral Medicine and Pain Vol.30 No.3

Occlusal appliance therapy has been proven to be very useful and effective in reducing signs and symptoms of patients with TMD. However, there are no reports about the masticatory efficiency of the occlusal appliance. The purpose of this study was, first, to investigate the masticatory efficiency of the conventional stabilization appliance experimentally in normal healthy subjects, by comparing it with that of their natural dentition; and, second, to develop a modified stabilization appliance as an attempt to increase masticatory efficiency. Eleven subjects (mean age 25.3 years, range from 23 to 33) participated in this study. Six were men and five were women. They were healthy and had complete or near―complete natural dentition, and did not present with signs or symptoms of TMD. Two kinds of occlusal appliances―the conventional flat maxillary stabilization appliance (i.e., FSA) and a modified maxillary stabilization appliance with additional anatomic structures on its occlusal surface (i.e., ASA)―were made for every subject. Subjects chewed peanuts that were selected as a food to test the three masticatory conditions of the natural dentition, the ASA, and the FSA. The number of chewing strokes was counted during each 1-minute chewing period. Chewed peanut boluses were recovered and their hardness was measured by texture analysis. Statistical tests were performed. The following results were obtained. 1. The masticatory efficiency of the FSA was 38.6 percent that of the natural dentition. The efficiency of the ASA was 78.2 percent that of the natural dentition. 2. The number of chewing strokes in the natural dentition condition was measured to be 1.5 strokes per second. It decreased to 90 percent in the ASA and FSA conditions. These results indicate that the ASA could serve an improved masticatory capacity as well as its therapeutic effects in TMD. A clinical application of the ASA should be considered to extend the management of TMD patients.