Analysis of Physical and Sensory Properties according to Sugar Types in Yugwa

최형윤,이희영,장미,박선현,정지윤,심유신,김종찬 공주대학교 자원과학연구소 2021 자원과학연구 Vol.3 No.2

Yugwa is a traditional food unique to Korea, and the manufacturing of yugwa is largely divided into two processes: making the bandaegi and coating the bandaegi with sugar. To control the yugwa quality and strengthen the market competitiveness, this study analyzed changes in physical properties during storage according to the type of sugar used in yugwa manufacturing and the temperature that the sugar is applied. Consumer preference was evaluated for 30 adult men and women using a 9-point scale for overall preference, uniformity of garnish, color brightness, sweetness, unpleasant smell, and texture. Physical property analysis measured physical changes during storage, based on the type of sugar used to coat the yugwa and the storage temperatures (30°C and 4°C) over 5 wk. In the manufacture of starch syrup, it was easier to maintain the quality according to the storage period and to use starch syrup alone than starch syrup alone. In addition, the application of sugar at 100°C helps to maintain quality even though the storage period is increased.

수도 식물체 착색성과 벼 흰잎마름병 저항성의 유전분리

황선미,김창호,신동일,강희경,김성민 公州大學校 資源科學硏究所 1999 資源科學硏究論文集 Vol.7 No.-

This study was carried out clarify the inheritance pattern of coloration and bacterial blight resistance in rice plant. Jado showing purple color in leaf blade, apiculus and resistant to K! race(BLB) was crossed with Near-isogenic lines bred in IRRI with single genes (Xa-3, Xa-5, Xa-11) for bacterial blight resistance. Parents, F₁ and F₁ plants were planted and observed individually. The results obtained in thid study are summarized as follows: In the three crosses, leaf blade color in F₂ population segregated with the ratio of 13 colorless: 3 color. It was segregated with the ratio of 3 color: 1 colorless, so it was governed single dominant gene. The resistant gene of jado to K1 racd was governed single dominat gene different to Xa-3, Xa-5 and Xa-11. Leaf blade color did not segregated independently with apiculus color and resistant to K1 race, so F₂ plants that showing the purple leaf blade showed purple apiculus and resistant to K1 race. Apiculus color was segregated independently with resistant to K1 race.

德山道立公園 利用者의 行態에 關한 硏究

오두영 公州大學校 資源科學硏究所 1999 資源科學硏究論文集 Vol.7 No.-

This research was made for the basic purpose to innestigate satisfactory extent of user regarding using recreational function in the park and thefacility of the source in the provincial park to estimate analyze major variable affecion on these and present index to be considered at the time of development and management plan of provincial park. Toksan provincial park located in the vicinity of Toksanmyon, Yesankun, Choongnam as aregion of investigative object was sleected in order to achieve this purpose of research. This investigation was made by composed questionnaire based upon selected contents form the interview result of park visitor centering around Toksan Mountain region and Gaya Mountain for the peak period 8 months between March and October in 1997. The total used numbers of statiscal analysis data mountted up to 233. General 20 questions and 26 questions (total 46 puestions ) regarding estimate and satisfactory degree after use of park were used as a major varible composed of questionnaire. Major valuables were social and econmical property of an individual (name, age, occupation and4 questions )and charccteristic of behavior and attitude (the number of vist, approchion way of use, the accompained form and questions ) as autonomous qariable and subordinate varibles such as satisfactory degree regarding the use of natural cenery, road, facility and whole things. Integrated valuation scale of 5 classes was utilized as an index of questionaire and coefficient of credibility degree on the questions was 0.92. Analysis of data was made by the application os statiscal way such as property of the user and behavior frequency and crossing analysis and multi-rarity analysis by the use of SPSS PC statiscal analysis installed pentium 586 computer. Statiscal level of caution necessary to the related valuable sampling was made to 1%. Appeared results through this research are as follows. 1. The property of user was showed up that the use of woman in sex and 20's in ages and highschool graduates in education and housewife and students in occupation was much highter. 2. the behavior and attitude of user was showed up that Choongnam in residence was 52.9% and the use of tour bus in the approcching way of usage was 45.1. The materiality of accompanied form was 44.2% in case group travelling and the spring in the main visiting season was 35.2% and the use of restaurant in meal solving way was 55.8% to the high using rate, but a half day user (less than 5 hours)in staying hours in the pakr was 48%, therefore it sured it must be one day tour form. 3. The case with the purpose of tour and the mountain climbing and the date with friend or lover as a characteristic of the purpose of visit by user was showed high and 20's accordind to the age appeared to be main user on the age group, but every age group showed relatively even distribution in case of the purpose of visit and tour and mountain climbing. The students and white collar worker on the purpose of the visit by each occupation and clerical worker and house wife on the viwing of the cultural assets and the observation of the nature and the students on the purpose of the date with friend or woman showed the high figure. The highschool graduates were major user as compared with the purpose of visit by each education but ot showed that college student in case of purpose of date with friend or lover was high figure. 4. As a major valuable affecting satisfactory degree after using of natural view, beauty of natrual view and season change of scenery showed up the higher satisfactory degree as compared with the other valuable. 5. It was understood that the width and pavement material on the walking road and the system of the ingormation board in the park were largely affected by the park user as a major factor deciding satisfactory degree of load use. 6. As a major factory desiding factory degree of facility using, estabilshing place of the convinient facility adn quanity and waste basket and the facility of dumping place were making absolute affection it showed.

Environment Ecological Studies on the Riparian Forest in the Chichibu Mountains, Central Japan

Ann, S.W.,Chae, S.C.,Jung,J.H.,Kim,Y.C. 公州大學校 資源科學硏究所 1999 資源科學硏究論文集 Vol.7 No.-

The study aims to present the relationships among vegetation, soils and landfroms in the process of determining riparian forest establishment in the mountainous region of central Japan. The study area extends an area of 302 ha with a range of elevation between 925 m and 1681 m at the Chichibu Mountains. The landforms were corditied at sampling grids (25 X 25 m,n=4843) using a hierachical system, and a brief description of the forest soils and landforms play a significant role in determining the geomorphological process of roparian, and shaping the ultimate pattern of vegetation. At the study area, riparian forests were mainly found on the B forest soil type and steep solpes (>30。) at convex slopes along the streams. On the other hand, the direction of slopes did not have a significant impast on the establishment of the riparian forests. A mosaic of patchy distribution of those riparian forests o the slightly wetter BE forest soil type was one of the characteristic features of the study area. This particular soil which contained large targe talus gravels was found on the land formed by erosion and deposition of landslide.

토양수분포텐셜과 질소시비량이 완두의 초기생육 및 질소고정능에 미치는 영향

김창호 公州大學校 資源科學硏究所 1998 資源科學硏究論文集 Vol.6 No.-

The experiment was carried out to investigate the effects of soil water potential and nitrogen fertilizer level on growth, nitrogen fixation ability and crude protein content of pea(pisum sativum L.) at early growth stage by countermeasures against climatic damage. This experiment was conducted using a completely randomized factorial design with three replications according to the soil water potential level(-10, -50 and -100kPa) and nitrogen fertilizer level(6,8 and 10kg/10a). Research samples were collected a month after irrigation control at intervals of 14 days from May 10 to June 7. The results obtained are summarized as follows; 1. The plant height and leaf number of pea according to soil water potential and nitrogen fertilizer level were the most increase at soil water potential of -50kPa and nitrogen fertilizer of 10kg/10a. The growth effect of plant height and leaf number according to soil water potential level was more severe at soil water potential of -100kPa(dry soil) than that of soil water potential of -10kPa(moisture soil), So plant height and leaf number were more decrease at soil water potential of -100kPa than those of -10kPa. 2. The fresh and dry weight of pea were increased with higher soil water potential and nitrogen fertilizer level. The dry weight was not significantly difference among soil water potential level, but that was significantly difference among nitrogen fertilizer level. 3. The amount of ethylene in the samples taken 2 hours was the most increase at soil water potential of -50kPa on May 10, May 24 and June 7, nitrogen fertilizer of 10kg/10a on May 10 and May 24, nitrogen fertilizer of 8kg/10a on June 7. The crude protein content was increased with increased nitrogen fertilizer leve, but that was not significantly difference among soi water potential and nitrogen fertilizer level.

연초 재배지에서의 잡초 발생양상 및 방제에 관한 연구

김창호,오명희,강정룡 公州大學校 資源科學硏究所 1998 資源科學硏究論文集 Vol.6 No.-

The experiment was conducted to investigate weeds control by several herbicides on tobacco growing fields and barren tobacco growing fields. In those fields, the dominant species weed were Digitaria sanguinalid Scop., the second were Cyperus americus Max. in tobacco growing fields, and Persicaria hydropiper (L) Spach in barren tobacco growing fields. In tobacco growing fields, 100% of Digitaria sanguinalid Scop., 96% of Setaria viridis(L) Beauv and Echinochloa crus-galli P. Beauv were controled by pendimethain (N-(1-ethylpropyl)2,6-dinitro-3,4-xylidine) at 5kg (5%)/ 10a application,respectively. Broad-leaves weeds n tobacco growing fields were controled 93% by Napropamide [(RS)-N,N-diethy-2-(1-naphthyloxy) propionamide] at300g(50%)/10a, pendimethain(N-(1-ethylpropyl)2,6-dinitro-3,4-xylidine)+Glufosinate[Ammonium4-[hydroxy(methyl)phosphinoyl]-ammonium-DL-homoalanine] at 5kg (5%)/10a or 300ml(31.7%)+300mi (1.8%)/10a. In case of barren tobacco growing fields, pendimethain gave an excellent weeds control any other herbicides application. Tobacco plants were uninjured by the herbicide treatments and yields was 5-6% higher from treated than untreated tobacco. Hand weeding took 24.0 hours per 10a in tobacco growing fields but 20.6 hours in barren tobacco growing fields. And then, herbicidal weeds control took 2.7 hours per 10a. in each tobacco growing fields. Expenses of hand weeding were 72,000 won/ 10a at tobacco growing fields, and 61,800 won/10a at barren tobacco growing fields. But expenses of herbicides control were 8,100 won/10a at both tobacco growing fields.

알코올과 아연 섭취에 따른 흰쥐의 혈청과 소변에서의 무기질 함량변화

김명희,임병순 公州大學校 資源科學硏究所 1998 資源科學硏究論文集 Vol.6 No.-

This study was undertaken to investigate the effect of zine supplementation on calcium, phosphorus and magnesium of serum and urine in male Sprague Dawley weaning rats administrated with 5% of alcohl solution for five weeks. Sixty rats weighing 80∼90g were administrated with moderate alcohol level(10% of total energy intake) and fed diets containing three different levels of Zinc(30ppm, 300ppm,600ppm). The results were as following; 1. There wasno significant differences in food intake, body weight gain and feed efficiency ratio by alcohol administration and Zinc supplementation. 2. In serum, calcium was not significant in CZ group and HZ group, but SHZ group was decreased. Phosphorus were not significant among the three group, but was significant by alcohl administration effect. Magnesium content were high significantly in SHZ group, but alcohl group and nonalcohl group were not different. Zinc supplementation effect was significant, but not significant by alcohl administration effect. 3. In urine, calcium excretions was increase in alcohl administration. Especially, urinary calcium excretions was increase in SHZ group. I thought that high Zinc intake increase urinary calcium excretion. Urinary phosphorus excretions was increase by alcohl administration and no different in CZ, HZ, SHZ group. Urinary magnesium excretions was increase by alcohl administration, Zinc supplementation was no effect.

식용생물로부터 면역증강활성물질의 탐색 및 추출조건

김경임,이효구 公州大學校 資源科學硏究所 1998 資源科學硏究論文集 Vol.6 No.-

This study is focused on the screening and extraction of a macrophage activating polysacchRIDES from edile plants. Abstracts of the results obtained from researches are as followes. Among 20 kinds of plant extracts, Allium Tuberosum, Allium Monanthum, Amaranthus Acendens and Capsicum Annuum showed higher macrophage lysosomal enzyme activity than others. They were than 185% activity in 100㎍/mL concentration in comparison with control. Especially, the cold water extracts from Allium Tuberosum showed the most potent activity in dose-dependent fashion. During extraction, low molecular weight fraction was removed by using MtOH extraction of Allium Tuberosum. High molecular water soluble fraction was obtained by hot water extraction and the EtOH precipitation. Fraction AT-1 showing 218% macrophage lysosomal enzyme activity, consisted of 52.1% carbohydrate, 11.2% protein and 3.2% uronic acid.

中部地方産 호도나무材의 比重, 收縮率, 吸收量 및 吸濕量에 關한 試驗

李瓚鎬 公州大學校 資源科學硏究所 1998 資源科學硏究論文集 Vol.6 No.-

This study was carried out to obtain data on specific gravity, shrinkage and absorption of chestnut wood for the reasonable and effective utilization of walnut(Juglans sinensis Dode) The results obtained were summarized follow : 1. Specific gravity in the grren condition was 0.67±0.03 in the airdry condition was 0.57±0.03, in the ovendry condition was 0.55±0.03 and bulk density was 465±14 Kg/㎤ 2. The results of shrinkage are given in the table 2, the ratio of tangential shrinkageto radial shrinkage in shrinkage from green to oven dried appears 2.25. 3. The results of absorption and absorption of water are given in the table 3.

自生春蘭 葉變異體의 chimera的 特性

朴奉圭,李武鉉 公州大學校 資源科學硏究所 1997 資源科學硏究論文集 Vol.6 No.-

These studies were carried out to investigate the chimeral characteristics of leaf variegation on wild Cymbidium virescens Lindl in Korea. The microscopic observation of mesophyll cell from variegated leaf in C. virescens indicated that the green cell contained chloroplast but white cell lacked chloroplast. Mixed tissues consisted of both green and white cells. The combination of these cells may from various variegated leaves in C. virescens. Periclinal chimeras of various variegated leaves in C. virescens could be classified into 27 types. GGG was come from normal leaf type. GWW and GWG could describe leaf type of large central pellucidity streak, and streak between marginal and central.MGG and MMM could describe leaf type of top mixed streak, and whole mixed streak. WGG and WWW could define leaf type of marginal streak, and whole pellucidity. It appeared that sectorial chimeras of variegated leaves in C. virescens could be due to one-side variegation of leaf, and mosaic chimeras of variegated leaves might classify into 3 forms, foggy mosaic, mosaic, and mosaic with dot and/or net.