• Title/Summary/Keyword: texture of gel

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Development of Giant Squid (Ommastrephes bartrami) Surimi-based Products with Gel Texture Enhancers and the Effects of Setting on Gel Quality (겔 강화제를 첨가한 대왕오징어 어묵 개발 및 이의 품질에 대한 Setting의 영향)

  • Choi, Seung-Hwa;Kim, Sang-Moo
    • Journal of the Korean Society of Food Science and Nutrition
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    • v.41 no.7
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    • pp.975-981
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    • 2012
  • Setting is an important process for the control of surimi quality in industry because it can improve the gel texture and water-holding capacity of surimi-based products. Therefore, the effect of setting on giant squid surimi-based product was analyzed via a mixture model. Konjac flour and microbial transglutaminase were used as texture enhancers. Both texture enhancers improved the texture and water retention ability (WRA) of giant squid surimi-based products, while decreasing the whiteness. Setting also improved the gel texture and WRA, while having no effect on the whiteness. Based on the sensory evaluation, the product with gel texture enhancers was better than the control and similar to commercial surimi products. Therefore, the applications of gel texture enhancers and setting are very important for the manufacture of giant squid surimi-based products.

Effect of oil addition on texture of Mungbean Starch Gel (지방첨가가 녹두전분 gel의 texture에 미치는 영향 제 2 보 : 관능검사에 의한 평가 및 관능검사와 기계적 검사의 상관관계)

  • 주나미;전희정
    • Korean journal of food and cookery science
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    • v.8 no.1
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    • pp.21-25
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    • 1992
  • This study was undertaken for the purpose of investigating the texture of mungbean starch gel. By the sensory evaluation result of 8% mungbean starch gel, ‘shine’ tended to increase as the addition level of oil increased, but clarity tended to be decreased. In elasticity, hardness, cohesiveness and overall quality, 2% oil gel was more preferable then those of other levels. The result of 10% mungbean starch gel was similar to that of 8% mungbean starch gel. In 8% and 10% mungbean starch gel, ‘shine’ characteristic in sensory evaluation showed the positive correlation with L, a, and b values in mechanical test. However clarity in sensory evaluation showed the negative correlation with L, a, and b values in mechanical test.

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Evaluation of Wheat Gluten and Modified Starches for Their Texture-modifying and Freeze -thaw Stabilizing Effects on Surimi Based-products

  • Chung, Kang-Hyun;Lee, Chong-Min
    • Preventive Nutrition and Food Science
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    • v.1 no.2
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    • pp.190-195
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    • 1996
  • Texture-modifying and freeze-thaw stabilizing effects of different wheat gluten and modified starches on surimi based-product were evaluated. The different incorporation manners of wheat gluten and modified wheat starch in surimi gel were also examined to evaluate their effects of textural properties on surimi gel. The addition of wheat gluten reduced the gel strength of surimi, but after freeze-thaw cycle it significantly improved freeze-thaw stability by reducing freexe-thaw expressible moisture and also by preventing rubbery texture development, Gluten-1 incorporated surimi gel showed higher functionality in forming cohesive gel determined by compressive and penetration force as wall as expressible moisture after freeze-thaw cycle. Surimi gel containing modified wheat starch showed better freeze-thaw stability that of modified potato starch. When a preblended mixture of wheat gluten and starch are incorporated into surimi gel, it made gel texture significantly softer as so in high sensory score. The compertition for moisture between gluten and starch is a main reason to show different way of textural modification.

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Preparation and Texture Characterization of Surimi Gel Using a Unmarketable Rearing Olive Flounder (저상품성 양식 넙치를 이용한 연제품 제조 및 텍스튜어 특성)

  • Cha, Seon-Heui;Jo, Mi-Ran;Lee, Jung-Suck;Lee, Ji-Hyeok;Ko, Joo-Young;Jeon, You-Jin
    • Korean Journal of Fisheries and Aquatic Sciences
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    • v.42 no.2
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    • pp.109-115
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    • 2009
  • The properties of surimi gel from Olive flounder Paralichthys olivaceus were evaluated with addition of various food additives and by heating under different conditions. The optimum heating conditions for get good textured surimi gel from Olive flounder was 40 minutes at $85^{\circ}C$. Optimum texture characteristics such as hardness, cohesiveness, chewiness, gumminess and gel strength of olive flounder fish paste can be acquired by washing the paste 2 times and by adding sodium chloride (2.5%), sodium polyphosphate (0.3%) and starch (4%), respectively. Furthermore, we compared gel texture characteristics and strength of manufactured Olive flounder fish surimi with commercial Alaska pollack to determine their commercial applicability. Texture characteristics and gel strength of Olive flounder surimi were higher than those of the commercial Alaska pollack surimi. In addition, both lightness and whiteness were higher in surimi gel from Olive flounder than from the commercial Alaska pollack.

Textural Characterization of Gel Layer Thickness and Swelling Boundary in a Hydrophilic Compact (친수성 정제의 겔층두께와 겔팽창 영역의 조직 특성화)

  • Kim, Hyun-Jo;Fassihi, Reza
    • Journal of Pharmaceutical Investigation
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    • v.31 no.1
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    • pp.13-18
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    • 2001
  • This study was to investigate the relationship between the gel layer thickness and swelling boundary via strength measurements using texture analysis. The novel texture analysis approach was used to examine the dynamics of swelling behavior in a ternary polymeric matrix tablet. The method permitted the characterization of the changes occurring at the peripheral as well as within interior boundary of the swelling during water ingress. The increase in gel strength for pectin, HPMC, and a ternary mixture with gelatin was found to depend on polymer concentration. Therefore, this method is further applicable to characterize the swelling behavior and provide opportunity to differentiate the gel-layer from that of swelling boundary.

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Texture Properties of Acorn Starch Gels -Puncture test, Back extrusion test and Retrogradation test- (도토리묵의 텍스쳐 특성 -관통시험, 역압출시험, 노화특성시험-)

  • 김영아
    • Journal of the Korean Society of Food Science and Nutrition
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    • v.20 no.2
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    • pp.173-178
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    • 1991
  • The rheological properties of acorn crude starch gel and refined starch gel were investigated by puncture test, back-extrusion test and retrogradation test. Puncture test was a useful method to compare the different gel type and concentration, and to calculate the compression and shear coefficient. Maximum extrustion force and adhesiveness were also examined by performing back-extrustion test. The retrogradation rate was analysed by Avrami equation in retrogradation test.

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Quality Characteristics of Frozen Stored Mungbean Starch Gels Added with Sucrose Fatty Acid Ester

  • Choi, Eun-Jung;Oh, Myung-Suk
    • Food Quality and Culture
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    • v.3 no.2
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    • pp.53-58
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    • 2009
  • This study was conducted to investigate the quality characteristics of frozen stored mungbean starch gels added with sucrose fatty acid ester (SE). The study showed a delay of gelatinization of mungbean starch by SE addition through the measurements conducted by using Rapid Visco Analyzer (RVA) and Differential Scanning Calorimeter (DSC). In the color of SE added frozen stored gels, lightness (L) and yellowness (b) values were increased compared to those of values measured from freshly prepared gel, whereas redness (a) value was decreased. The addition of 1% SE on mungbean starch gel prevented the color change during frozen storage. Rupture stress and rupture energy of frozen stored gel was higher than those of freshly prepared gel, whereas rupture strain of frozen stored gel was lower than that of freshly prepared gel. The addition of 1% SE on mungbean starch gel prevented the change of rupture characteristics during frozen storage. Texture profile analysis(TPA) characteristics revealed a significant change of the gel texture during frozen storage by showing an increase of hardness of the frozen stored gels compared to the freshly prepared gels with newly discovered fracturability, which resulted to show a large difference of gel texture by showing the disappearance of adhesiveness and large reduction of cohesivenes. The addition of 1% SE on mungbean starch gel prevented the change of TPA characteristics during frozen storage. Scanning electron micrographs showed that network structure of frozen stored gel was more rough than that of freshly prepared gel, and the addition of 1% SE on mungbean starch gel could suppress the breakdown of network structure. Thus the addition of 1.0% SE on mungbean starch gel was appropriate method for remaining gel characteristics during frozen storage.

Large and Small Deformation Studies of Ohmic and Water-Bath Heated Surimi Gel by TPA and Creep Test

  • Choi, Won-Seok;Lee, Cherl-Ho
    • Food Science and Biotechnology
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    • v.15 no.3
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    • pp.409-412
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    • 2006
  • Interrelationship between results of large deformation (texture profile analysis, TPA) test and small deformation (creep) test on ohmic heated surimi gel, water-bath heated surimi gel, and commercial fish gel products (kamabokos) was examined. Creep test revealed ohmic heated gels have higher elastic modulus and viscosity values than water-bath heated ones, with differences of elastic modulus and viscosity between ohmic and water-bath heated gels being 18 and 28.5%, respectively. These differences were reflected in the higher hardness, cohesiveness, and chewiness values of ohmic heated gels in TPA. In TPA test, the differences of hardness and chewiness between ohmic heated gel and water-bath heated gel were 29.3 and 38.7%, respectively. It was concluded that with proper experimental design, the small deformation creep test which gives molecular level deformation data can be related to the large deformation TPA test indicating the sensory textural properties.

Texture profile analysis of acorn flour gel-Comparison of 3$\times$3 latin square with 3sup 3 factorial experiment - (도토리묵의 Texture 특성 -라틴방격법과 요인배치법의 비교-)

  • 김영아
    • Journal of the Korean Home Economics Association
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    • v.23 no.3
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    • pp.49-53
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    • 1985
  • The typical texture profile analysis of acorn flour gel was investigated with Instron univ. testing machine by two experimental designs, 3$\times$3 latin square and $3^{3}$factorial experiment. As the result, it was revealed that Latin square is a useful method to reduce the number of experiments, in the case of a negligible interaction.

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Quality Properties of Giant Squid (Dosidicus gigas) Surimi-Based Product Manufactured with Amorphophallus konjac Flour (구약감자 분말을 첨가하여 제조한 대왕오징어 어묵의 품질특성)

  • Choi, Seung-Hwa;Kim, Sang-Moo
    • Korean Journal of Food Science and Technology
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    • v.44 no.4
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    • pp.422-427
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    • 2012
  • A giant squid has not been utilized in the manufacture of the surimi-based product because of its strong fishy smell and weak gel forming ability. In this study, Amorphophallus konjac flour (AKF) was used to improve the quality of giant squid surimi-based products. The response trace plots showed that the gel texture and water retention ability (WRA) of surimi gel increased as the contents of AKF and surimi increased, whereas the water content decreased. Meanwhile, the whiteness of surimi gel increased as the contents of water and surimi increased, and AKF content decreased. Based on a sensory evaluation, giant squid surimi-products with AKF was inferior in color and taste compared to commercial surimi-based products, This inferiority could be improved by the addition of seasoning ingredients such as sweeteners. AKF successfully removed the fishy smell and improved the surimi gel properties. Therefore, AKF could be used as a food ingredient in surimi-based products.