산 가수분해와 수분-열처리가 난소화성 서류 전분 형성과 구조에 미치는 영향

문태화 서울대학교 농업개발연구소 2000 농업생명과학연구 Vol.4 No.-

To investigate the effects of acid hydrolysis and heat-moisture treatment(HMT)on formation and structural characteristics of resistant starch(RS), sweet potato and potato starches, which had been partially hydrolyzed with 1N HCℓ at 35℃ for 8hr and then subjected to autoclaving-cooling(AC) treatment, were heated at 100℃ for 16hr after adjusting the moisture content to 20% or 30%. RS content of the starches increased by more than three times by HMT following acid hydrolysis. Differential scanning calorimetric thermogram of the acid hydrolyzed starch with HMT revealed a decreased peak transition temperature(Tp). It could be ascribed to the formation of new short starch chains by the acid hydrolysis. These chains were presumed to be the main component of the crystalline region, which led to the formation of less stable crystallites during AC and HMT. The enthalpies of RS were increased by HMT. X-ray diffraction patterns of RS revealed that the peak resolution and crystallinity were enhanced by HMT. Especially, sweet potato RS exhibited sharper and larger peaks at 2 Θ = 24˚ - 28˚. RS formed by AC and HMT of acid hydrolyzed starch showed the changes in X-ray diffraction pattern. 13C CP/MAS solid NMR spectra of all the RS displayed chemical shifts and increased double helix content by these treatments.

감꼭지나방 생태적 특성 및 방제약제 선발

김정화,김길하,조수원,박은철,김순섭,황태구,최상기 충북대학교 첨단원예기술개발연구센터 1999 연구보고서 Vol.4 No.-

경남지역과 충북지역 감나무의 재배, 해충 방제실태를 농가 방문하여 설문조사 한 결과 감 재배경력은 경남지역이 평균 10년이며, 충북지역은 평균 5년 정도이다. 감 재배 주수는 대다수 농가가 20주 이상이고, 재배관리에 대하여 자문을 받는 곳은 농업센터나 농약사 및 연구소 등이었다. 김 품종은 경남지역에서는 부유와 서촌조생, 충북지역에서는 등시와 월하 등을 재배하고 있었다. 시비종류는 이른봄 에 퇴비나 복합비료를 주었고, 감나무 생장 중 열매나 저장 중 열매에 발생하는 해충이 발견되었다. 해충방제를 위해 살충제를 살포하고 있는데 주로 감꼭지나방, 진딧물, 잎말이나방 및 깍지벌레 등으로 파마치온, 파단, 코니도, 신파마치온, 수프라사이드 등을 살포하였다. 감꼭지나방(Stathmopoda masinissa)의 발육생태를 조사하기 위하여, 감꼭지나방을 야외에서 채집하여 온도±1℃, 광주기 16L:8D, 상대습도 50~60%에서 실내 사육하였다. 각 층태별 기간은 알 7.4일, 유충기간 34.7일, 용 15.5일이었다. 각 령기간은 1령 3.5일, 2령 4.2일, 3령 5.2일, 4령 6.5일, 5령 15.4일이었으며, 특히 유층의 두폭을 측정하여 평균한 결과는 1령 0.20mm, 2령 0.40mm, 3령 0.65mm, 4령 0.87mm, 5령 1.07mm일 이었다. 성충의 수명은 수컷이 6.2일, 암컷이 10.1일 이었다. 용화율은 68.0% 우화율은 59.9%이었다. A survey in Kyungnam and chungbuk areas revealed that the average number of years for persimmon tree farming is 10 and 5 years, respectively. The number of trees per orchard is at least over 20, and the farmers have been usually advised through an agricultural center, an agrochemical store, or agrochemical research center. The varieties of the persimmons they grow are Buyu and Seocheon in Kyungnam, and Doogsi and Wolha in Chungbuk. The kind of fertilizers they sprayed in early spring is either compost or composite fertilizer. persimmon pests are often found in persimmon fruits while on a tree or in storage. Phamathion, Padan, Konido, Sinpamathion, and/or supuraside is usually used to control persimmon fruit moths, aphides, leafrollers, and scale insects. To understand the developmental ecology of the persimmon fruit moth, Stathmopoda masinissa Meyrick, we collected and reared them under the laboratory condition which is at 25±1℃ of temperature, 16L:8D of photoperiod, and 85% of relative humidity. As a result, the developmental period of egg, larva, and pupa were 7.40, 34.7, and 15.5 days, respectively. The average period of each larval instar was 3.50, 4.17, 5.17, 6.46, and 15.42 days, respectively, and the average head capsule width was 0.20, 0.40, 0.65, 0.87, and 1.07mm, respectively. The average adult longevity was 6.2 days for males and 10.1 days for females. The pupation rate and the emergence rate were 68.0% and 59.9%, respectively.

소아의 연령별 Propionibacterium acnes에 대한 균체응집항체 및 동종혈구응집항체간의 비교연구

정화영,정상인,최철순,양용태 중앙대학교 의과대학 의과학연구소 1984 中央醫大誌 Vol.9 No.3

In general, the concentration of maternal IgG globulin in serum of the neonates falls rapidly within the first few months after birth and the production of IgM globulin develops in the maturing infants during the course of exposure to various antigens in the environment. The development of natural antibodies, ie., isohemagglutinins, IgM class, to ABO blood group substances and agglutinins, Ig class, to normal flora, in the early stage of life is important since not only they may act as bactericidal substances in nonspecific manners, but also could be immunological barometers on the normal function of humoral immune system. The high concentration of isohemagglutinins to human A or B blood group antigens and agglutinating antibodies to some of normal flora such as Propionibacterium acnes or Staphylococcus aureus were observed in normal human sera. It has been known that the serum concentration of IgM globulin usually reached adult levels by one year of age, while that of IgG globulins by five to six years of age. However, the levels of isohemagglutinins to A and B group substances and agglutinating to Propionibacterium acnes in children's sera and the ages in which the concentrations of their antibodies reached to abult levels are not clarified. In this study, the concentrations of isohemagglutinins to A and B blood group antigens and agglutinating antibodies to P.acnes serotype Ⅰ and serotype Ⅱ in the sera of 163 normal children, ranged from 0 day to 15 years of age, were measured by means of microtitration technique. The results obtained are as follows: 1. In the sera of 163 children under 15 years of age, there observed no significant difference in the titers of agglutinating antibodies to P. acnes serotype Ⅰ andⅡ. 2. Of 75 sera of children under one year of age, the numbers of sera in which agglutinating antibodies were not detectable or less than 1:4 to P. acnes serotype Ⅰ were 67(89.6%) and to serotype Ⅱ 53(70.7%), respectively. 3. Agglutinating antibody to P. acnes serotype Ⅰ in the children's sera reached adult levels by 7 years of age, but 100 percentages of antibody detection was observed only in the age group of 15 years old, whereas the adult levels of isohemagglutinins to A and B blood group antigens were observed in the age group of 6 months old. 4. No correlation were observed in normal children's sera between agglutinating antibody titre to P. acnes serotype Ⅰ and isohemagglutinin titre. These results indicated that the isohemagglutinins to ABO blood substances appeared in the earlier stage of life than did agglutinating antibodies to P. acnes.

萬頃江流域에 있어서 井水中의 弗素含量에 관한 硏究

金完泰,安榮根,申和雨,張賢淑 원광대학교 식품약품안전성연구소 1987 食品藥品安全性硏究 Vol.1 No.-

This study is the survey about Fluorine contents in the well water of area of Mankyung River side and water of Mankyung River. The result of this survey is as followings: The water of well in this area contained 0.5∼1.3ppm and it's average value was about 0.8 ppm. The water from Mankyung River contained 0.8∼0.9ppm and it's average value is 0.87ppm. By the regionally sectional survey the well water of the area of Mankyung River side, the well water of Chun-Ju, Iri, Samye, and Kusan contained 0.5∼0.8ppm, but the well water of Baikku area contained 0.6∼1.3ppm. Especially in Baikku area 63% of well contained 0.6∼1.0ppm and 38% of well contained 1.1∼1.3ppm. From the above results one can conclude that the 38% of well water of the Baikku area is troubled one.

고로슬래그 미분말을 사용한 모르타르의 강도발현에 관한 연구

최영화,김종인,김태형 大邱大學校 科學技術硏究所 1998 科學技術硏究 Vol.5 No.1

The purpose of this study is to examine the mechanical properties of mortar using ground granulated blast-fumace(GGBF) slag. In this paper, the mortar replaced by varying fineness and content of GGBF slag was investigated through the flow value and compressive strength. This experimental study was acquired following results by the material test of fresh and hardened mortar proportioned standard sand and natural sand, mixing proportion of 1:2, 1:3, 1:5, slag fineness of 4500, 5500, 6500㎠/g, water binder ratio 40, 45, 50, 55, 60% and replacement rate of 0, 15, 30, 45%. As the result, it was found that GGBF slag increased somewhat higher flow value and compressive strength. In addition, the highest compressive strength in this study appeared at 30% GGBF slag replacement rate.

마이야르 반응에 의한 BSA-갈락토만난 복합체의 구조 및 유화 특성

문태화 서울대학교 농업개발연구소 1999 농업생명과학연구 Vol.3 No.-

Bovine serum albumin-galactomannan (BSA-GM) conjugates were prepared through Mail;lard reaction. With an increase in reaction ratio of GM to BSA, 2.5-7 moles of GM were bound to 1 mole of native BSA. Intrinsic fluorescence analysis suggested that the surface of each conjugate was covered with GM and the conformation of hydrophobic interior was not changed. Binding ability of BSA-GM conjugates to a hydrophobic probe was higher as compared to native BSA. Secondary structure showed little difference in native BSA and BSA-GM conjugates. Thus, it would suggest that the covalent bond between BSA and GM was formed outward of the α-helical region. The emulsifying properties of BSA-GM conjugates were improved as compared with those of native BSA and BSA-GM mixture. The improvement of emulsifying properties was due to the hydrophilicity, steric hindrance and viscoelastic properties caused by GM.

BOX-Wilson 실험계획법에 의한 인산알루미늄의 최적합성조건에 관한 연구

신화우,강태욱,안세민 원광대학교 식품약품안전성연구소 1992 食品藥品安全性硏究 Vol.5 No.-

Aluminum phosphate is used as an antacid in pharmacy as the gel or dried gel, must meet specified neutralization rate and acid consuming capacity criteria. This nonadsorbable antacid has been used in place of aluminum hydroxide gel where loss of phosphate may be a problem to the patient. Since aluminum phosphate gel is regenerated in the intestine, endogenous phosphate is spared. The acid-consuming ability of aluminum phosphate is based on the release of phosphate anion : AlPO_4 ?? Al^3+ + PO^3-, PO^3-_4 + H_3O^+ ?? HPO^2-_4 + H_2O, HPO^2-_4 + H_3O^- ?? H_2PO_4 + H_2O. Aluminum phosphate gel was synthesized by reacting aluminum chloride as a soluble aluminum salt to sodium phosphate in this study ; AlCl_3 + NaPO_4 → AlPO_4↓ + 3NaCl. The optimum synthesis conditions based on the yield of product were investigated by applying Box-Wilson experimental design. It was found that optimal synthesis conditions were as follows ; Reaction temperature;90∼98℃, Concentration of two reactants;15.3∼15.5%, Concentration ratio of two reactants, [Na_3PO_4]/[AlCl_3];1.48∼1.49, reaction time;10minutes, drying temperature of product;60∼70℃.

우리 나라의 장티브스 發生에 對한 疫學的 考察

鄭泰華 건국대학교 1975 論文集 Vol.2 No.1

An epidemiological study of Typhoid Fever in Korea(1961∼1970) Typhoid fever is one of the most serious health hazard in Korea. Although the incidence rate has been assumed to be very high. This study was copied out using the records of the acute communicable disease reported to the Ministry of Health and Social Affairs during past 10 years from 1961 to 1970 The results are summarized as follows 1.Typhoid fever cases were 60.2 percent of the class 1 communicable disease cases in the past 10 years in Korea 2.The morbidity rate for typhoid fever was 14.9 based on 100,000 population and the cases fatality rate was 2.1 percent. 3.The high epidemic period is from May to October each year. The frequencey of incidence was highed in July. 4.The incidence in higher in the rural areas lower in urban area but lowest in mountainous districts. 5.The number of typhoid fever morbidity was higher among males than females and the higher incidence age group was the 10 to 35 age groups (Medion 22.35 years standard deviation 12.50) 6.Most typhoid fever cases were diagnosed by clinical dispensary (clinical dispansary diagnosis 71.3% , serogical examination 24.3% , bacteriological examenation 4.4% 7.The expenditure on typhoid vaccine averaged 20.8 perecnt of population based on 0.5ml doses given to the whole population. 8.Piped mineral water supply ratio was 24.0 percent based on the total number of houses in Korea in 1970. The authors recommended the need for nationwide health education and increased safety of drinking water supply system in the rural areas. The control and detection of carriers should be processed bacteriologically and serological diagnosis and annually vaccination should he given to the age group from 9 to 35 years season ally in March or April.

韓國人의 위달抗體價 調査報告

鄭泰華,全南昊,尹尙五,柳榮海 國立保健硏究院 1974 국립보건연구원보 Vol.11 No.-

대전지역 일부 청소년의 식생활습관과 체격과의 관계

변화봉,권윤형,이태용 韓國學校保健學會 2001 韓國學校保健學會誌 Vol.14 No.2

This study investigates the effect of adolescent dining habits on their physical development. We selected 200 students from the three high schools in Taejon, and surveyed with a questionnaire and collected data concerning physique from school health records. The results obtained from this study were as follows: 1. A point of intersection of two development trends of male and female students' heights was between sixth grade of elementary school and first grade of middle school. Two development trends of weights didn't have a point of intersection and male students' development trend of weights was a little higher than that of female students. 2. There were significant differences in the weight and BMI of male students. The 'regular dining' group had heavier weight and higher BMI than the other group, and the 'Eating only favorite food' group had lower weight and BMI than the other group. In female, heights of 'three meals a day' group were higher than that of 'two meals a day' group and the more snacks per day, the higher students' height was. 3. The 'regular exercise' group had significantly heavier weight and higher BMI than the other group amount females. 4. 'Regular dining' and 'Eating habits' had a positive linear relationship with male students' weight and BMI. 'Number of times of snacking' has a positive linear relationships with female students' height and a negative linear relationship with female students' BMI. Since dining habits of adolescents have not only an effect on their development but also later adults' health, to develop good habits of health and dining is a critical issue.