• Title/Summary/Keyword: viscosity and color

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Quality Characteristics of cream soups added with rice flour and potato as a thickening agent (쌀가루와 감자를 농후제로 사용한 크림스프의 품질 특성)

  • Koh Seung-Jeong;Park Hong-Hyun;Lee Kyung-Hee
    • Korean journal of food and cookery science
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    • v.20 no.6 s.84
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    • pp.568-574
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    • 2004
  • In order to seek the possibility of using rice flour and potato as thickening agent instead of roux, sensory evaluations of cream soups manufactured from 3 different thickening agents were conducted. The viscosity, moisture and lipid contents, and the color affecting the quality of the soup were investigated. The results were as follows: 1. As thickening agents for 200g of the cream soups, rice flour and potatoes at 20.5 and 20g, respectively, were needed in order to make soup with a similar concentration to that manufactured using 20g of roux. 2. In the sensory tests, the soup made with rice flour had the most preferred overall acceptability, with a significantly preferable taste. The soup made with rice flour had the strongest whiteness and savory taste, but that made with roux had the strongest viscosity and smooth feeling in the mouth feel. There was no difference between the samples with regard to nutty flavor. The whiteness, palatability, viscosity and smooth feel sensory properties were positively correlated with the overall acceptability. Among these properties, the palatability showed the highest correlation (r=0.538) with overall preference. 3. The cream soup made using potatoes as the thickening agent had a $76.20\%$ water content, whereas those made with rice flour and roux had 73.00 and $64.00\%$ respectively The fat content of the cream soup made with roux was $10.24\%$, which was twice as high as those of the rice flour and potato soups. 4. Among the 3 kinds of cream soup, the one made with rice flour had the whitest color.

Assessment of Quality Characteristics of the Shrimp Powder, Jook, for Elderly Foodservice Operation (노인급식에 적용하기 위한 새우 죽의 물리적, 관능적 품질특성 평가)

  • Cho, Hee-Sook;Kim, Kyung-Hee
    • Journal of the Korean Society of Food Culture
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    • v.24 no.4
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    • pp.419-425
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    • 2009
  • This study examined the effects of added amounts of shrimp powder on the physical and sensory properties of Jook for elderly foodservice operation. According to the amylograph data, the composite shrimp flour-wheat flour samples increased the gelatinization temperature, with increasing shrimp-flour content; moreover, initial viscosity at $95^{\circ}C$, viscosity at $95^{\circ}C$ after 15 minutes, and maximum viscosity were reduced. As the level of shrimp powder in samples increased, L-values decreased, and a-values and b-values increased. In addition, the Jook had higher viscosity and lower spreadability values as the amount of shrimp powder increased. Sensory characteristics, such as nutty taste, color, viscosity, and overall preference increased significantly with the addition of shrimp powder. In conclusion, to enhance the quality of Jook, a 3% addition of shrimp powder would be the most beneficial.

Optimal Mixture Ratio for Rice (Oryza sativa L.) Gruel Supplemented with Puffed Rice by Mixture Design (혼합물 실험 계획법에 의한 팽화미 첨가 쌀죽의 최적 배합비 분석)

  • Ku, Kyung-Hyung;Choi, Eun-Jeong;Koo, Min-Sun
    • Journal of the East Asian Society of Dietary Life
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    • v.23 no.2
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    • pp.218-226
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    • 2013
  • This study examined the optimal mixture ratio of rice gruel supplemented with puffed rice by mixture design. The quality characteristics of rice gruel samples were examined according to mixture ratios at eleven experimental points. The high soluble solid content and viscosity of gruel samples were significantly dependent on rice (short grain) content instead of glutinous rice. The viscosity ranged from $2,891{\sim}9,153\;cP{\cdot}s$ and soluble solid content ranged from $8.23{\sim}10.13^{\circ}Brix$ at the eleven experimental points. The mixture with the highest solid content and viscosity, 12% rice gruel sample was $10.10{\sim}10.13^{\circ}Brix$ and $9,150{\sim}9,153\;cP{\cdot}s$. The L color of sample decreased with decreasing rice content, while "a" (redness) and "b" (yellowness) values slightly increased. In the sensory evaluation, samples with higher amount of puffed rice and glutinous rice scored higher for brown color, flavor and sweetness than high-content rice samples. The response surface and trace plot results showed that increasing of puffed rice increased the brown color, sweet taste and sticky aftertaste. From the results of the F-test, viscosity, "a" (redness) and "b" (yellowness) values fit a quadratic model with significant probabilities within 0.05%. The optimum predicted formulations of rice gruel containing puffed rice were 1.69% of puffed rice, 0.47% of glutinous rice and 9.84% of rice, respectively.

Quality Characteristics of Cream Soup with Hericium erinaceus Powder (노루궁뎅이버섯 분말을 이용한 크림수프의 품질 특성)

  • Yang, Seung-Wook;Kim, Bo-Ra;Lee, Jo Won;Lee, Chan;Moon, BoKyung
    • Journal of the East Asian Society of Dietary Life
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    • v.24 no.5
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    • pp.631-640
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    • 2014
  • In this study, manufactured a cream soup by varying addition of Hericium erinaceus and decided its recipe, and conducted particle size analysis, calorimetry, sensory test for investigating physicochemical characteristics and quality characteristics (salinity, sugar content, color value, pH, viscosity), antioxidant activities of soup, and mechanical sensory test for objectivity. This study found that moisture content in Hericium erinaceus powder was 6.16%, crude protein 26.87%, crude fat 4.62% and crude ash was 10.75% respectively. No significant differences were found in salinity, sugar content, pH according to addition of Hericium erinaceus. As for color value of cream soup manufactured by adding Hericium erinaceus, L value decreased with increase in addition of Hericium erinaceus, whereas a value and b value increased. The more the addition of Hericium erinaceus, the higher the viscosity, which increases concentration of soup. As result of analysis on antioxidant activities of Hericium erinaceus cream soup, antioxidant activities increased with increase in addition of Hericium erinaceus. Particle size analysis showed results similar to that of viscometry, which means that the smaller the particle size, the higher the viscosity, whereas viscosity lowered vice versa. Calorie of cream soup showed no significant difference notwithstanding the amount of addition. As a result of sensory test, S5 with 5% of Hericium erinaceus powder was highest rated in color, flavor, taste, umami taste and overall preference. As a result of mechanical sensory test, umami taste increased with increase in addition of Hericium erinaceus powder, whereas bitterness taste lowered significantly (p<0.05) with addition of Hericium erinaceus. As for salty taste, both control group and experimental group that added Hericium erinaceus powder showed no significant difference. Accordingly, experimental group with 5% of Hericium erinaceus powder was proved to be the most desirable.

A Study on the Blending Color in Karim Rashid's Works (카림 라시드의 작품에 나타난 블렌딩 색채에 관한 연구)

  • Kim, Sun-Young
    • Korean Institute of Interior Design Journal
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    • v.20 no.4
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    • pp.155-162
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    • 2011
  • In order to pursue the traces of truth, boundaries set by man for convenience were crossed or Integrated leading to the discovery of new paradigms. Such phenomena including collaboration, convergence, crossover and etc. are expressed in various forms across the society and culture. In particular, development of digital technology is moving away from its previous color based on scientific, statistical and quantitative perspective by using diverse variables. Also, as the borderlines of genres become increasingly more ambiguous, various concepts of color blending developed rapidly. Thus These chaosmos-like color blending have created new contents. This research aims to understand the principle of color blending in Karim Rashid's work, which advocates the world of design in diverse fields from industrial products to architecture. The principle of color blending such as information change, source color and destination color, interaction, and etc. makes it possible to extract the expressed element and method of color blending. Meanwhile, the features of color blending such as integrated space and time, vague form, and narrative genre can be inferred from case analysis.

Characteristics and development of Rice Noodle Added with Isolate Soybean Protein (분리대두단백질을 첨가한 쌀국수의 제면특성 및 개발)

  • Park Hee-Kyung;Lee Hyo-Gee
    • Korean journal of food and cookery science
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    • v.21 no.3 s.87
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    • pp.326-338
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    • 2005
  • The purpose of this study was to investigate the effect of isolate soybean protein (ISP) and rice flour on the characteristics of rice noodles. As the levels of ISP and rice flour increased, water binding capacity, swelling power of rice noodle increased. In RVA, pasting temperature, Set back showed an increasing tendency with peak viscosity, holding viscosity, break down, final viscosity of rice noodle increased as the level of rice flour by decreasing. Peak time was not significant. The weight, water absorption and volume of the cooked noodles were decreased. The turbidity of rice noodle increased. The Hunter color L, a-values of the dried rice noodle decreased. Cooked rice noodle quality increased with by decreasing the level of rice flour level. B-values of dried rice noodle and cooked rice noodle increased. Texture profile analysis of cooked rice noodle showed an increase of hardness. Adhesiveness, cohesiveness of cooked rice noodles decreased with by decreasing the level of ISP and rice flour. Gumminess, springiness, chewiness were increased. Sensory evaluation, showed gloss was increased. Hardness and chewiness of the cooked ice noodles were increased. Adhesiveness was not significant. Color and overall- acceptability were increased. Relationship between sensory and mechanical examinations (The overall quality of sensory examination for gloss) had a negative correlation with the mechanical examination for b-value (p.0.05). Mechanical examination for b-value had a positive correlation of sensory evaluation for hardness, chewiness, which had negative correlation of sensory evaluation for color. Scanning Electron, Microscopes observation of rice noodle was showed that the size of the hole grown was increased with by increasing the level of rice flour. From the above results, the most advisable mixture ratio of rice noodle evaluation was can be derived as follows: 171g rice flour, 114g wheat flour, 15g soybean protein isolate, 120ml water, and 6g salt.

Characteristics of Nylon6/Ionomer Semi IPN for Molded-In-Color Compound (나일론6/이오노머 Semi IPN의 몰드-인-칼라 수지 특성 연구)

  • Lee, Ja-Hun;Hwang, Jin-Taek;Kang, Ho-Jong
    • Polymer(Korea)
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    • v.36 no.4
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    • pp.407-412
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    • 2012
  • The characteristics of nylon6/ionomer semi interpenetrating networks (IPN) as a molded-in-color (MIC) compound had been studied, and comparison was made with nylon6/ionomer blends. Nylon6/ionomer semi IPN shows better homogeneity in phase morphology than nylon6/ionomer blend, and it caused better anti-scratching performance than the blend. This semi IPN structure resulted in lowered crystallization rate, increased melt viscosity and less temperature dependency of viscosity. As a result, we may expect the enhancement of melt processing characteristics in an injection molding process using nylon6/ionomer semi IPN as a MIC compound.

A Study on the Millbase Dispersion for LCD Color Filters (LCD 컬러필터용 밀베이스의 분산 연구)

  • Jung, Il-Bong;Ahn, Suk-Chul;Nam, Su-Yong
    • Clean Technology
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    • v.14 no.1
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    • pp.21-28
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    • 2008
  • The properties of the dispersion of the red, green, and blue pigments were investigated for the manufacture of the millbase of LCD color filters. Their physical properties and viscosity were controlled to apply to the screen printing in order to substitute the existing photolithography method. The best dispersion properties were obtained with dispersant BYK-2000 and monomer EB-140. The millbase was pre-mixed at 500 rpm for 30 min, and dispersed at 4000 rpm for 5 - 6 hour by Torus Mill. The resulting particle sizes were $100{\sim}110\;nm$ for red, $50{\sim}70\;nm$ for green, and $60{\sim}80\;nm$ for blue. When the millbase viscosity was 200-300 cps in the low viscosity formulation, an efficient impact of the beads on pigments was achieved. The dispersion properties were confirmed from the rheological behavior and color characteristics.

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Color evaluation of low viscosity bulk-fill resin with composite resin capping layer (저점도 벌크필레진과 복합레진 적층수복물의 색조 평가)

  • Yun, Jonghyeon;Jung, Ji-Hye;Chang, Hoon-Sang
    • Journal of Dental Rehabilitation and Applied Science
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    • v.31 no.4
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    • pp.294-300
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    • 2015
  • Purpose: The purpose of this study was to measure the color of low viscosity bulk-fill resin with a capping layer and to compare it with the color of microhybrid composite resin. Materials and Methods: A low viscosity bulk-fill resin (SDR) and microhybrid composite resin of shade A2 (A2) or A3 (A3) were fabricated to 4 mm thickness and light cured for 20 seconds. CIE $L^*a^*b^*$ values of the resin specimens were measured with a colorimeter. Then shade A2 and A3 microhybrid composite resin was capped over low viscosity bulk-fill resins in 2 mm thickness (SA2, SA3). The resin specimens were light cured for 20 seconds and the color was measured and analyzed (n = 10). Color differences (${\Delta}E$) between SA2 and A2, SA3 and A3 were also calculated. Results: $L^*$ value was highest in SDR followed by SA2 and SA3. $L^*$ value of A2 and A3 was the lowest. $a^*$ value was lowest in SDR followed by SA2 and SA3, and A2 and A3 was the highest. $b^*$ value was lowest in SDR followed by A2 and SA2, and A3 and SA3 was the highest. ${\Delta}E$ between A2 and SA2 (${\Delta}E=3.4$), and that between A3 and SA3 (${\Delta}E=3.1$) was lower than the perceptible color difference threshold of ${\Delta}E=3.7$. Conclusion: ${\Delta}E$ between low viscosity bulk-fill resin with a capping layer and microhybrid resin was lower than the perceptible color difference threshold.

Quality Characteristics of Tomato Sauce Added with Rosemary by Different Storage Periods (로즈마리 첨가 토마토 소스의 저장기간에 따른 품질특성)

  • Kim, Jang-Ho
    • Culinary science and hospitality research
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    • v.19 no.3
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    • pp.116-129
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    • 2013
  • The aim of this study is to investigate the effects of rosemary on the quality characteristics of tomato sauce during storage period(60days). As storage time went by, analysis of color differences of tomato sauce showed that "L", "a", "b"-value of tomato sauce less decreased with more herbs added, but there were no significant differences. As storage time went by, the pH ranged between 4.10-4.25, the sweetness between $10.50-9.67^{\circ}Brix$, and the salinity between 0.90~1.56 among all additions. Also, the more herbs were added, the more viscosity increased. The reducing sugar content ranged between 38.87-55.38, and its highest was shown in the sample with 0% of rosemary during the storage period. The sensory evaluation was performed with scoring tests for color, flavor, taste, aftertaste, viscosity, and overall acceptability by 15 professional panelists. The result showed that the tomato sauce with 1% rosemary was the best in the color, flavor, taste, aftertaste, and overall acceptability. From the above results, the study suggests that the addition of 1% fresh rosemary to tomato sauce is recommended for commercial use.

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