平面式 太陽熱集熱機를 利用한 紅蔘乾燥

張奎燮,金相達,洪淳根,尹漢敎 한국응용생명화학회 1982 Applied Biological Chemistry (Appl Biol Chem) Vol.25 No.3

密閉式물 交換太陽 熱集熱乾燥製置를 利用하여 紅蔘을 乾燥할때의 集熱效率, 乾燥效率. 乾燥特性 및 製品의 品質을 各各 調査하였다. 乾燥其間은 太陽熱集熱製置를 利用한 것이 慣行法보다 3分의 1程度를 더 短 할 수 있었다. 乾燥其間中集熱機의 最大效率은 14.42% 最低效率은 4.73%였고 乾燥效率은 集熱製置를 利用한 것이 28.34%, 對照區가 13.45%로서 純粹乾燥效率은 14.89%이었다. 紅蔘의 乾燥率曲線은 減率乾燥期만을 나타내었으며, 이 때의 式은 Y=50.7023t.-014138 이었다. 乾燥紅蔘의 色度는 慣行法과 比較하여 더 높았으며, diphenylpicryl hydrazyl 遇元能도 같은 傾向을 보였다. A closed solar collector drying system by water exchange was evaluated for the drying of ginseng. The thermal efficiency of solar collector, drying efficiency, drying characteristics and product quality were investigated. The drying period was reduced by one-thirds in comparison with typical method. The maximum and minimum thermal efficiency of the solar collector during drying period were 14.42%, and 4.73%, respectively. The drying efficiency of solar collector and control system showed 28.34%, and 13.45%, respectively: net drying efficiency being 14.8%. The drying rate curve of red ginseng showed only falling rate period, and its equation was Y=50.7023t.^(-0.4138) The brown color intensity of red ginseng was higher in solar collector drying system than in typical method, and reductivity by diphenyl picryl hydrazil solution in red ginseng extract showed similar result to brown color intensity.

金屬元素 含量이 油菜實 油量에 미치는 影響 (第一報) : 油菜實中의 金屬酸化物量과 含油量과의 關係 Relationship of Metallic Oxides and Oil Content

尹漢敎 忠南大學校 1974 論文集 Vol.13 No.1

This experiments were carried out in order to investigate the effects of the metallic elements and water content on the rape seed oil production. Rape Seeds 33 varieties wee collected and each was determined oil content, Water content and metallicoxides (K_2O, MgO, CaO, Na_2O) in the rape Seeds. Among these 33 varieties, 6 excellent varieties in oil content were Selected and cultured in the poor meta Soil. The 6 varieties were measured oil content, Water content and metallic oxides again and compared with the former value. The results are Summarized as follows. 1) The content of rape seel oil was increased according to the MgO content in the rape seeds. 2) The effect of K_2O Na_2O and CaO in rape Seeds were insignificant in oil production. 3) The MgO content in the rape seeds was preportional to the Mg content in Soil 4) The relation to waler content and oil content in the rape seeds were inrignificant.

개암種實의 加工適性에 關한 硏究 : 개암種實 脫脂粕의 蛋白質 分離 및 分離蛋白質의 特性에 대하여 Separation of Protein from Defatted Hazel Nut Meal and Characterization of the Protein Isolates

尹漢敎,琴鍾和,李鍾秀,吳萬鎭 충남대학교 농업과학연구소 1981 農業技術硏究報告 Vol.8 No.2

In order to obtain the basical data for utilization of protein in hazel nut, protein was extracted from defatted hazel nut meal with salt solutions and alkaline solutions, and precipitated by adjusting pH of extract to 5.5 or addition of organic solvents. Amino acid composition of the isolated protein and defatted hazel nut meal were analyzed, protein isolates were identified by polyacrylamide gel electrophoresis. The results summarized were as follows. 1. Defatted hazel nut showed highly nutritional value as the content of protein was 53.6%. 2. Extractabilities of salt-soluble protein treated with 2.5M MgCl_2, and 1 M NaCl(pH 11.0) were 53.0%, 31.5%, respectively. 3. Protein in hazel nut were contained 53% of salt-soluble globulin, 14% of water-soluble albumin, 29.5% of glutelin based on solubility. 4. At pH 5.5, 85% of the extracted protein was precipitated, and about 90% of the extracted protein was separated by addition of organic solvents such as acetone and ethanol at 60-70% concentration. 5. Proteins extracted from defatted hazel nut with water and 0.027N NaOH showed 3 and6 bands by polyacrylamide gel electrophoresis, respectively. 6 . Amino acids of defatted hazel nut and protein isolate were chiefly composed of glutamic acid, arginine and aspartic acid.

Phase Titration에 의한 酒類中의 알콜 含量의 分析

尹漢敎,金鍾益 忠南大學校 1974 論文集 Vol.13 No.1

The alcohol content of alcoholic beverages was determined using benzyl alcohol in a phase titration. 1) Benzyl alcohol is added to the unknown beverages until distinct turbidity appears, caused by the separation of a second phase. The amount of benyl alcohol necessary to cause turbidity is a function of the ethanol content of the Sample. Volume Percent of alcohol in alcoholic beverages is determined by comparing the titer with the standard colibration curve. 2) Nine samples of alcoholic beverages were taken in downtown for determination of alcohol content. 3) For determination of alcohol content of "Tack Joo", "Tack Joo" was centrifuged or filtered before phase titration. 4) The procedure is simpler and quicker than the standard pycnometric method, and gives comparable results.

土壤窒素分析에 對한 硏究 "Kjeldahl 法에 依한 迅速化"

尹漢敎 忠南大學校 1965 論文集 Vol.4 No.-

The author stadied that, in case of the exact sapid resolution of given various numberous soil samples. When H_(3)po_(4) was applied in the process of kjeldahl method. Temperature was heightened in the process, and accordingly resolving time was shortened when CUSO_(4), 5H_(2)O was applied as catalyst. Ammonia was collected exactly, and the temperature needed in the process was maintained desirably. 1) When H_(3)PO_(4) was applied in the process o kjeldahl method, high temperature was gained and resolving time was shortened. 2) The test resolt of B method as compared with that of traditional A method, was fully accurate and more rapidly attained. 3) Implements needed in the process of B-method had to be pyrex-made. 4) When soil samples were resolved according to B method ruled by kjeldahl method the time needed in resolving them was one half of tradtional A method. 5) When various solid soil examples were treated, the time needed in lreating them had to be cut down as shortly as possible. That object was attained the above stated.

개암種實의 加工適性에 關한 硏究 : 第1報 種實油의 理化學的 性質 및 熱 安定性에 關하여 Part 1. Physico-chemical Properties and Heat Stability of Hazelnut Oil

尹漢敎,吳萬鎭 충남대학교 농업과학연구소 1979 農業技術硏究報告 Vol.6 No.2

In order to obtain the basic data of processing adaptability of hazelnut, physico-chemical properties and heat stability of hazelnut oil were investigated, and the results obtained are summarized as follows. 1. Hazelnut showed highly nutrient value as the content of oil and protein were 59.6% and 17.35, respectively. 2. In physicochemical properties of hazelnut oil, refractive index was 1.469, specific gravity 0.912, saponification value 167.3 and iodine value 63.43, therefore, it was found to be non-drying oil. 3. In composition of fatty acids in hazelnut oil, oleic acid was contained much in comparisoon with other fatty acids, and which was similar to olive oil. 4. 18 kinds of amino acids were existence in protein of hazelnut cake and among these the content of glutamic acid was the highest. 5. The peroxide value were the highest in the heating at 150℃ for 30 hours and at 180℃ for 10 hours, and then decreased as the heating time were longer. The carbonyl value was increased as heating time passed. 6. Acid value of hazelnut oil in the heating at 150℃ for 30 hours and at 180℃ for 10 hours were similar to each other.

Studies on the Safety of Korean Ginseng Ingested as Food Substance

Hong, Soon Keun,Yoon, Han Kyo,Chang, Kyu Seob 충남대학교 농업과학연구소 1984 農業技術硏究報告 Vol.11 No.2

In order to study the safety of ginseng ingested as a food substance, rats were fed ginseng added feed (subgroup 1: 0.615g/kg feed; subgroup 2: 1.25g/kg feed; subgroup 3: 2.5g/kg feed) for periods up to 6 months. Growth rates, blood composition, blood cell counts, and histopathological studies were carried out on both the control and test animals to study the effect of ingested ginseng. Following results were obtained: 1. The growth rates of the test and control animals were similar with the exception of the subgroup 3 in the 2-month fed animals who had a lower weight gain, and the subgroup 2 in the 4-month fed group who had a higher weight gain than the controls. 2. Liver, spleen, kidney, brain, lung and heart weights were similar between the test and the controls. 3. RBC. WBC, hematocrit, and hemoglobin values were similar between the test and control animals. the blood composition determination showed a similar level of alkaline phosphatase, triglyceride, total cholesterol, S-GOT, free cholesterol between the test and controls. However. free fatty acid, total lipid and S-GPT levels decreased while phospholipid. total protein, and HDL-cholesterol levels tended to increase. 4. F1, F2 generations showed no abnormal values in blood count, organ weight and external appearance. 5. No histopathological differences were observed between the test and control animals even after a long-term administration of ginseng. However, there was evidence that ginseng promotes hematopoiesis in test animals. 6. These results suggest that ginseng is not only safe as a food substance but may indeed strengthen the body and help-prevent diseases of old age.

Candida muscorum의 Amylase에 關한 硏究

朴允仲(Yoon-Joong Park),尹漢敎(Han-Kyo Yoon),孫天培(Cheon-Bae Son) 한국식품과학회 1975 한국식품과학회지 Vol.7 No.4

貯藏 紅·白蔘中 Phenol 系 化合物의 含量과 抗酸化活性

金榮鎬,尹漢敎,張奎燮 충남대학교 농업과학연구소 1984 農業技術硏究報告 Vol.11 No.2

The contents of phenolic compounds and its antioxidant activities were investigated in various year stored red and white ginsengs (panax ginseng C.A. Mayer) The results obtained were as follow: 1. Total content of phenolic compounds was lower in free phenolic fraction than in esterified phenolic fraction. 2. The content of free phenolic acid in long storage period was lower ban that in short period but no significant difference was observed in esterified phenolic fraction. 3. Maltol, which constitute 50 to 80 percent of total phenolic acid in red and white ginseng. was higher in rail ginseng than in white ginseng and was higher in long storage period. 4. Red ginseng showed higher antioxidant activity than white ginseng and no difference in varicus storage periods was observed.

잣나무 種實의 脂肪酸 및 Amino酸 組成에 관한 硏究

金智文,尹漢敎 충남대학교 농업과학연구소 1975 農業技術硏究報告 Vol.2 No.2

In order to analyse the composition of fatty acid in the seed oil and amino acid in the seed protein of Pinus Koraiensis seed, GLC method was applied, while the general composition of the seed and physico-chemical properties of the seed oil were also determined by A. O. A. C. method. The results obtained were summarized as follows: 1. Oil content of the seed was high as 70.25 percent, and comparatively high content of protein (16.4%) and ashes (2.34%) were observed. 2. The seed oil seemed to be belonged semi-drying oil based on the iodine absorbtion number (108.93). The physical and chemical properties of seed oil such as acid value, saponification number and refractive index showed the composition of unsaturated high molecular fatty acid. 3. The seed oil was composed of high molecular fatty acid, 36.6 percent of oleic acid and 46.7% of linoleic acid, totaling more than 80 percent. Therefor it was good quality as an edible oil. 4. In the amino acid analysis of seed protein 16 Kinds of amino acid were determined, among them essential amino acid like lysine, methionine, threonine, phenylalanine, leucine, isoleucine and valine were abundant. From the results it was considered that the seed is good quality as a protein source.