• Proceedings of the Korean Society of Fisheries Technology Conference
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• 2001.05a
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• pp.154-155
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• 2001

난백과 혈장, 대두단백질은 겔화식품의 겔강화와 단백질 보강의 목적으로 다양하게 사용되고 있으며, 이 때 첨가단백질의 겔화 특성은 가장 중요한 피능적 특성중 하나이다. 이러한 겔화에는 단백질의 종류, 가열온도와 시간, 염의 유무, pH등의 환경이 복합적으로 작용하여, 소수성 상호작용, 공유결합, 이온결합, S-S결합 및 수화력 등이 겔을 형성한다. 단백질의 겔화에 미치는 변수에 대한 많은 연구가 이루어졌지만 단백질의 겔화 특성에 있어 가장 많은 구성비율을 차지하는 수분과 수화력에 관한 연구는 미미한 실정이다. (중략)

• Applied Chemistry for Engineering
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• v.9 no.3
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• pp.399-403
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• 1998

The gelation characteristics of chitosan of different molecular weight were investigated in terms of concentration and temperature of alkari aqueous solution. The average molecular weights and the degrees of deacetylation of the chitosan used were $2.0{\times}10^5$, $5.2{\times}10^5$, $8.2{\times}10^5$ and 85%, respectively. Sodium hydroxide solution was used as a gelation agent. A simple diffusion model was applied to study the gelation rate. The diffusion coefficients of the gelation agent in the chitosan gel increased with increasing its concentration, temperature of the casting solution, and molecular weight of the chitosan.

• Journal of the Korean Society of Food Science and Nutrition
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• v.17 no.2
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• pp.144-148
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• 1988

Differential scanning calorimerty(DSC) was used to study gelatinization phenomena of defatted rice, corn, wheat, potato starch and nondefatted rice and wheat starch at heating rate $5{\sim}15^{\circ}C/min$. Gelatinization temperature of defatted rice and wheat starch indicated $4{\sim}5^{\circ}C$ lower temperature than nondefatted starch. More rapid heating rate resulted in a increasing of the gelatinization enthalpy for various starches. A linear relation was observed between water content, heating rate and gelatinization temperature. From the linear relationship existing between water content and gelatinization enthalpy, minimum water content for the gelatinization were 41, 38, 33 and 30% of rice, potato, wheat and corn starch, respectively.

• Journal of Adhesion and Interface
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• v.3 no.2
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• pp.1-8
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• 2002

Polyurethane NCO prepolymers were synthesized with the polyols such as PTMG, GP and the isocyanate such as TDI at $40^{\circ}C$ for 8.5 minutes. As average molecular weights (${\bar{M_n}}$: 1000, 2000, 3000, 4000) of PTMG, and GP were decreased from 4000 to 1000, ratio of oil gelation increased from 298%, to 440%, for Bunker B. When oil and water were emulsified, the ratio of gelation was increased approximately two times. Ratio of gelation for emulsive Bunker B was increased from 402% to 910%, for PTMG1000 and increased from 440%, W 958% for GPI1000. Ratio of oil gelation for emulsive Bunk C which has higher viscosity than Bunker B was measured w 923% for PTMG1000 made with chain extender, i.e. EG, and measured to 1098% for GP1000. The gel made from GP which has three functional group showed soft and strong characteristic, as a result, it can be removed easily from oil spilled ocean.

• Polymer(Korea)
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• v.24 no.6
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• pp.787-793
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• 2000

The acrylonitrile copolymer/dimethylformamide (DMF) solutions were prepared to investigate the gelation behavior and critical gel concentration (c＊). Gelation is rapidly progressed with the increase of molecular weight of copolymer, but significantly delayed with supercooling temperature and comonomer contents. The c＊ behavior showed contrary trend against gelation behavior. In dynamic viscoelastic test, two glass-transition region were observed in film obtained from gelled solution whereas one glass-transition in film obtained from true solution. This result supports the idea that an ordered junction zone is formed by the dipole-dipole interaction of intermolecularly neighboring stereo-regular parts of atactic acrylonitrile copolymer chains due to a nucleation process in the solution.

• Proceedings of the Korean Society of Food and Cookery Science Conference
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• 2003.05a
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• pp.106-106
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• 2003

레몬은 쌍떡잎식물 쥐손이풀목 운향과로 인도 북동부가 원산지이며 비타민 C가 풍부하다. 주로 음료수의 향미료나 레몬필로 사용되고 있으며 구연산이 함유되어 있어 신맛이 강하다. 이에 본 연구에서는 비타민 C의 좋은 급원인 레몬에 설탕, 꿀과 고구마전분, 감자전분, 옥수수전분, 한천, 젤라틴의 겔화제를 사용한 과편을 개발하여 pH, 색도, 관능검사와 기계적 물성검사를 실시하였다. 레몬과편의 제조는 예비실험을 통하여 조리법을 개발하였으며 레몬즙 21.4％, 겔화제 6.7％, 물 53.3％, 설탕 13.5％, 꿀 5.3％를 첨가하였다. (중략)

• Proceedings of the Korean Society of Fisheries Technology Conference
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• 2000.10a
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• pp.114-116
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• 2000

원양에서 어획한 외양성 미이용 대형오징어류(체장이 십수m가 되는 페루산 또는 멕시코산 등)는 잠재 자원량이 대단히 많아서 수억톤 이상으로 추정하고 있다. 하지만 이들 오징어는 종특성상 가공적성이 떨어지는 즉, 겔화가 잘되지 않아서 연제품화하기가 어려운 것으로 알려져 있으나, Lee등(1996)은 연안산 오징어를 이용하여 단백질분해효소의 활성억제와 단백질의 유실억제 방법을 활용하여 외양산 오징어의 겔화 가능성을 조사하였으며, 또한, 이등(1999)은 이들 외양산 오징어의 겔화 정도를 수분함량에 따라서 조사하였으며 또한 이들을 기존의 명태 연육과의 혼합가능성 또한 보고한 예가 있다. (중략)

• Applied Chemistry for Engineering
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• v.3 no.2
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• pp.341-348
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• 1992

PVC was compounded with various crosslinking agents, plasticizers and acrylonitrile butadiene rubber(NBR) to evaluate their effects on the radiation gel percent, elongation at break, heat distortion and heat shrinkage. Gel yield of PVC increased with increasing unsaturation levels per molecular weight of crosslinking agents while PVC containing NBR was more sensitive to crosslinking than PVC itself regardless of the types of crosslinking agents and plasticizers. It was found that gel percent was increased with increasing radiation dose, while heat distortion was decreased with increasing gel percent. Heat shrinkage was increased with decreasing stretching temperature and increasing annealing temperature.

• Proceedings of the Korean Ceranic Society Conference
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• 2000.10a
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• pp.33.1-33
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• 2000

• Polymer(Korea)
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• v.24 no.6
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• pp.744-750
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• 2000

Oil gelling agent was synthesized with PPG, PTMG and TDI at 7$0^{\circ}C$ for 4hours. PPGs and PTMGs having various average molecular weights (M$_{n}$: 1000, 2000, 3000) were employed to investigate the ratio of oil gelation and water gelation. As M$_{n}$ of PPG, in result, was decreased from 3000 to 1000, the ratio of oil gelation was increased from 130% to 290% for PPG and from 250% to 310% for PTMG. Ratio of oil gelation was increased approximately two times when EG was added. As the amount of hydrophilic compound in the prepolymer was increased, ratio of oil gelation was increased from 290% to 1120% for PPG and increased from 310% to 1310% for PTMG, due to the increased dispersion of prepolymer in the water/oil mixture.ure.