• Culinary science and hospitality research
• /
• v.20 no.4
• /
• pp.183-192
• /
• 2014

The purpose of this study is to determine the possibility of using Codonopsis lanceolata leaves as natural health food source. To accomplish this purpose, the contents of general and antioxidative nutrients of Codonopsis lanceolata leaves were measured. The contents of carbohydrate, crude protein, crude lipid and ash were 65.09%, 18.02%, 1.34% and 9.72%. And the calories of Codonopsis lanceolata leaves were 288.36 Kcal. The protein contained total 16 different kinds of amino acids. The contents of essential and non-essential amino acids were 5,906.41 mg and 7,551.56 mg, respectively. K was the most mineral followed by Ca, P, and Mg, which means Codonopsis lanceolata leaves are alkali material. Total phenolic contents of Codonopsis lanceolata leaves were 1.87 mg/g, and total flavonoids contents were estimated as 1.87 mg/g. Based on the above results, we deemed that the Codonopsis lanceolata leaves might have potential antioxdant activities. The general nutrients and other antioxidatant bioactive materials in Codonopsis lanceolata leaves were also potential materials for good health food. It is expected that a follow up study of Codonopsis lanceolata leavesthrough developing processed food and evaluation of their functional properties would provide useful information as a source of medicinal foods.

• Journal of the Korean Society of Food Science and Nutrition
• /
• v.35 no.6
• /
• pp.708-712
• /
• 2006

The chemical properties of yellow and red onion were investigated and analyzed to provide basic data for functional food materialization and processing. The moisture and nitrogen free extract contents of yellow and red onion were 92.80%, 5.13% and 92.47%, 5.59%, respectively. Mineral components of yellow and red onion were rich in K (123.64 and 114.41 mg%), Na (34.09 and 33.57 mg%) and P (27.04 and 20.56 mg%). The major free sugar of yellow onion were glucose (744.2 mg%) and fructose (705.9 mg%). Whereas major free sugar of red onion were sucrose (692.8 mg%) and fructose (517.3 mg%). Glutamic acid, phenylalanine and aspartic acid in yellow and red onion were major amino acids. Abundant free amino acids in yellow onion were hydroxy-L-proline (27.34 mg%), L-serine (27.34 mg%) and L-arginine (26.25 mg%). Abundant free amino acids in red onion were L-glutamic acid (16.35 mg%), ammonium chloride (15.22 mg%) and L-serine (10.93 mg%). Ascorbic acid contents are higher in red onion (28.34 mg%) than in yellow onion (19.20 mg%). Quercetin and total polyphenol of yellow and red onion were 15.24 mg%, 5.70 mg% and 0.319 mg/g and 0.248 mg/g, respectively.

• Journal of Korean Society of Forest Science
• /
• v.65 no.1
• /
• pp.12-23
• /
• 1984

This study was carried out to investigate on the catalytic pyrolysis products of hardwood (Alnus hirsuta (Spach) Rupr. Quercus acutissima Carruters, Robinia pseudoacacia L., and Populus tomentaglandulosa T. Lee) and comparing the rate of catalytic pyrolysis from untreated wood (ordinary wood) with that of treated wood with catalizer (Ammonium phosphate, Ammonium sulfate, Ammonium chloride and Urea). The results were summerized as follows; 1) It is the Populus tomentiglandulosa T. Lee that the species has the most content of holocellulose and pentosan. And Populus tomentiglandulosa exhibited high yield of the distillate in pyrolysis products by Ammonium phosphate with catalizer. 2) The distillate of pyrolysis products is decreased in accordance with increasing catalytic concentration. And untreated wood (ordinary wood) with catalizer has the most distillate of pyrolysis products. 3) The yield of charcoal in pyrolysis products is increased in accordance with increasing catalytic concentration and lignin content of species. 4) The caloric values of charcoal in pyrolysis products is decreased with increasing catalytic concentration. And untreated wood (ordinary wood) with catalizer had the most caloric values, but the caloric values of charcoal did not show statistically significent difference at 5% levels in catalizer.

• KOREAN JOURNAL OF CROP SCIENCE
• /
• v.29 no.3
• /
• pp.242-253
• /
• 1984

Four different levels of nitrogen were applied to 3 naked barley cultivars (Hordeum vulgare L.) Yonezawa, Baekdong and Yeongsanbori. Changes in physico-chemical properties were examined upon these treatments. Total protein content as well as glutelin increased as N level increased. Baekdong contained the highest protein content (13.7%) at N$_2$. Yonezawa and Baekdong contained more lysine than Yeongsanbori. Increased lysine was measured in all cultivars by increased nitrogen application. Among all amino acids proline was the highest in all cultivars, and its increase was paralled to the N levels. Magnesium and potassium were declined and calcium was increased with increased levels of nitrogen fertilizer. Ash content was decreased as nitrogen increased and as the plants have become matured. Three minutes pearling in Yonezawa was not sufficient in terms of water absorption ratio and whiteness. Sixty percent pearling rate in Yonezawa showed a higher absorption ratio and cooking whiteness than non-waxy Baekdong and Yeongsanbori. Gelatinization temperature was lower but maximum viscosity was higher in waxy than non-waxy barley.

• Journal of the Korean GEO-environmental Society
• /
• v.15 no.3
• /
• pp.33-40
• /
• 2014

In this paper, mechanical and germination characteristics of stabilized dredged soils were investigated to recycle dredged soil in eco-friendly manner such as waterfront construction. Non sintering binder (NSB), which was developed by using interchemical reactions between slag, high-calcium fly ash, alkali activator on the dredged marine clay, was added to dredged soil. Ordinary portland cement was also used for the comparison of two binders. Experimental tests such as flow test and unconfined compressive test were carried out to evaluate characteristics of stabilized dredged soil. Leaching test, pH measure, vegetation germination test were also conducted to consider environmental applicability. The unconfined compressive tests shows that unconfined compressive strength (UCS) also increases with the increase of curing time and mixed ratio. UCS of NSB mixtures were higher than those of OPC mixtures. Germination tests showed that germination and sprouting date are better in NSB mixture than OPC mixture. It can be explained that germination decreased as pH and 7-day strength increased.

• Food Science and Preservation
• /
• v.12 no.1
• /
• pp.43-47
• /
• 2005

Ligularia fischeri is widely grown in Korea and is containing medicinal components such as chamomile, jacobine, and ameleme etc.. Its juices from the leaf are well known for anticancer effect. This study was conducted to make Ligularia fischeri as functional food resources as food produce. To examine quality characteristics of Ligularia fischeri - such as color, texture, fiber, minerals, tannin, crude proteins, crude lipids and sensory quality - were determined using physicochemical methods. The content of dietary fibers were 0.56 g in each 100 g of freeze dried Ligularia fischeri. One of the mineral contents, iron showed the highest value. The contents of tannin were 33.3 ppm in fresh Ligularia fischeri. As results of food products having Ligularia fischeri, the content of crude protein were about $9.35\%$ and $10.37\%$ in rolling snack and garlic bread respectively. The content of crude lipid were about $28.27\%$ and $23.39\%$ in rolling snack and garlic bread, respectively. In sensory evaluation, garlic bread appeared better preference than rolling snack, and older age group showed a better acceptability.

• Journal of Conservation Science
• /
• v.27 no.1
• /
• pp.31-40
• /
• 2011

Copper-red (Dongwha, Jinsa) is Korean traditional inorganic pigment used for red-coloring on the porcelain surface during Goryeo and Joseon Periods. Trace amounts of copper-red porcelains are handed down because of the technical difficulty of making and coloring of the pigment. It is known that copper ore sources were extensively distributed in Korea according to old literatures and some of them are still producing copper ore at this present. Main types of copper-bearing mineral in Korea are chalcopyrite ($CuFeS_2$) and malachite ($Cu_2CO_3(OH)_2$), and they are easily collected from the ground surface. This means Korea had geographical and economic geological advantages for supplying raw material of the pigment. These two minerals showed good red-coloring in color test for porcelain pigment. As a coloring element, copper showed micro size less than $5{\mu}m$ in diameter in glaze matrix. The dispersion of copper particle is the most decisive factor for red chromaticity of copper-red porcelain, as well as copper content of the pigment.

• Korean Chemical Engineering Research
• /
• v.50 no.2
• /
• pp.292-299
• /
• 2012

We made 8 wt% silica dispersion system with fumed silica and photo curable acrylic monomer by beads mill process. These dispersions could be applied in organic/inorganic hybrid coating systems. These dispersions could be applied in organic/inorganic hybrid coating systems. The 4 species of photo curable acrylic monomer which was presence of hydroxyl group, different solubility parameter, and different molecular size were used in the silica dispersions. Stability of polar solvent, isopropyl alcohol, in silica dispersions was investigated. We investigated the stability of silica dispersions by using steady-state and dynamic rheology. As the monomer has hydroxyl group increased in mono and binary monomer silica dispersions, they showed non flocculated stable sol (loss modulus (G")> storage modulus (G')). When polar solvent IPA was added into slightly flocculated silica dispersions, they changed to non flocculated stable sol.

• Resources Recycling
• /
• v.26 no.6
• /
• pp.65-72
• /
• 2017

APT (Ammonium paratungstate) is widely used in various industries such as metal cutting tools, drill bits, mining tools, and military inorganic materials. In order to produce high purity APT(S), an impurity purification step in an aqueous $Na_2WO_4$ convert $H_2WO_4$ solution is required. It is difficult to remove impurity Na of 200 ppm or less when $H_2WO_4(S)$ is prepared by adding HCl(Aq) to an aqueous solution of $Na_2WO_4$, which is a well-known conventional wet method. However, in this study, a more economical and efficient method of removing Na through electrodialysis using a cationic membrane was studied. A large amount of Na in aqueous solution of $H_2WO_4$ due to $Na_2CO_3(S)$ which was added to dissolve waste tungsten carbide drill and scrap was removed to 20ppm or less through electrodialysis process, and it was confirmed that the effect of Na removal was great when using electrodialysis.

• Computational Structural Engineering
• /
• v.12 no.1
• /
• pp.86-94
• /
• 1999

예비구조설계에서는 구조시스템 대안의 생성과 발전, 여러 방법과 대상에 따른 해석과 설계 다양한 요구조건과 구조적 특성을 고려한 여러 구조시스템 대안의 비교 및 선택 과정을 거친다. 그리고, 이러한 각 과정은 구조설계자의 경험적 지식을 바탕으로 하는 종합적인 사고와 판단에 따라서 단계적, 반복적으로 이루어진다. 그러므로, 예비구조설계에서는 정형화된 자료와 작어뿐 아니라 비정형화된 자료와 작업도 처리해야 한다. 따라서, 컴퓨터는 정형화된 자료와 작업을, 구조설계자는 비정형화된 자료와 작업을 직접 처리하고 이를 상호작용을 통하여 교환 및 지시하는 방식, 즉 구조설계자와 컴퓨터의 역할분담에 기초한 상호작용방식을 통하여 예비구조설계에 컴퓨터를 효율적으로 활용할 수 있을 것이다. 구조설계자와 컴퓨터의 역할분담에 기초한 상호작용을 원활히 지원하기 위해서는 구조시스템 대안의 기하학적 향상, 재료에 대한 자료를 효과적으로 제시할 수 있는 3차원 관점, 각 구조시스템 대안을 검토하고 비교하는 사항이 되는 다양한 요구조건에 대한 자료들을 관리하고 제시할수 있는 요구조건 관점이 필요하다. 그리고 예비 구조설계가 진행되어 온 과정, 방향, 설계의도등의 파악을 위한 바탕이 될 수 있는 작업과정관점, 구조시스템 대안 발전 관점이 필요하다. 예비구조설계의 프로세스 조절을 위한 상호작용을 효과적으로 지원하기 위해서는 컴퓨터가 수행 할 수 있는 정형화된 작업들을 예비구조설계의 진행순서인 구조시스템 대안의 생성과 발전, 구조시스템 대안의 해석과 설계, 구조시스템 대안의 선택에 따라서 나열하여 제시할 필요가 있다. 이를 통해서 구조설계자는 자신의 판단에 따라서 다음에 수행해야 할 작업을 결정하고, 그에 해당하는 정형화된 작업을 컴퓨터가 제시한 작업 중에서 선택하고 그 수행을 지시하여 자신의 경험적 지식과 설계의도에 맞추어 예비구조설계의 프로세스를 조절할 수 있다.정조합력은 유의차가 컸으나, 상반조합 능력은 없었다. 교배친의 우성효과는 컸다. 잡종강세 환경변이 및 상가적 작용도 컸다. 우성의 방향은 정의 방향이었으므로 우성귀전자가 크게 작용하였다. 이들 형질들의 귀전자들은 초우성을 나타내었다. 교배친의 자견층중의 우성순서는 잠120>잠114>잠108>잠119>잠118>잠107>잠117>잠113 순이었고, 웅견층중에서는 잠114>잠108>잠120>잠117>잠118>잠107>잠119>잠119>잠113 순이었다. 자견층 비율에서는 광의의 귀전력이 협의의 귀전력보다 컸고, 웅견층 비율에서는 같았다, 견층 비율에서는 일반조합 능력은 크게 나타났으나, 특정조합 능력과 상반조직 능력은 나타나지 않았다. 자견층 비율에서 교배친의 우성효과는 컸다. 자견층 비율에서는 교배친의 우성효과는 적었다. 자웅견층 비율의 잡종 강세는 적게 나타났다. 환경변이와 상가적 작계는 자웅견층 비율에서는 크게 나타났다. 우성의 방향은 자견층 비율에서는 정의 방향으로 우성 귀전자가 크게 작용하였으며, 자견층 비율에서는 정의 방향으로 우성 귀전자가 부분적으로 작용하였다. 교배친의 자견층 비율의 우성순서는 잠117>잠114>잠108>잠120>잠118>잠119>잠107>잠113 순이었고, 자견층 비율에서는 잠114>잠117>잠108>잠118>잠107>잠119>잠113>잠120의 순이었다.지방산의 조성이 많은 차이를 보였다.{2+}$ 26 및 $Na^+$ 26 mg $L^{-1}$이었다. 양액 재배 후 버려지는 폐양액 중의 무기성분 함량은 양액재배에 이용되는 원수에 비해 상당히 높아졌다.료로서 응용 가능성이 있음을 시사한다.약재료인 약초류 등을 이용하였는데 오랫동안 푹 삶아 그물에 곡류 등을 넣어 죽이나 밥으로 조리하였으며 면으로도 조리하였다. 이상과 같이 조선시대 주식류의 종류 및 조리방법에 대한