• Title/Summary/Keyword: amylography

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Quality Characteristics of Dried Noodles Added with Ligularia fischeri Powder (곰취 분말을 첨가한 국수의 품질특성)

  • Park, Bock Hee;Joo, Ha Mi;Cho, Hee Sook
    • Journal of the Korean Society of Food Culture
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    • v.29 no.2
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    • pp.205-211
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    • 2014
  • This study investigated the quality of noodles containing different amounts of Ligularia fischeri powder (LFP). Noodles were prepared at ratios of 0, 1, 3, 5, and 7% LFP based on flour weight. Cooking quality, mechanical texture properties, and viscosity were measured, and a sensory evaluation was performed with the prepared noodles. Gelatinization points of the composite LFP-wheat flours increased. As measured via amylography, viscosity at $95^{\circ}C$, viscosity at $95^{\circ}C$ after 15 minutes, and maximum viscosity values of samples decreased, as the LFP content increased. As increasing amounts of LFP were added, the L, a, and b values decreased while color values, weight, and volume of cooked noodles increased, as did the turbidity of the soup. With regard to textural characteristics, LFP additive increased hardness, cohesiveness, and springiness, while decreasing adhesiveness. Sensory evaluation showed that high quality cooked noodles could be produced by inclusion of 3% LFP.

Changes in Properties of Waxy Rice During Steeping in Water (찹쌀의 수침중 성질 변화)

  • Kim, Kwan;Kang, Kil-Jin;Lee, Yong-Hyun;Kim, Sung-Kon
    • Korean Journal of Food Science and Technology
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    • v.25 no.1
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    • pp.86-87
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    • 1993
  • The steeping of waxy rice in water at $20^{\circ}C$ for 12 hr resulted in the decrease of protein, crude fat and ash contents. Water-binding capacity and swelling power (at $80^{\circ}C$) of waxy rice flour increased upon steeping. Maximum viscosity of waxy rice flour in 0.19 N sodium hydroxide solution was increased up to 6 hr steeping and decreased thereafter. The amylograph indices increased as the steeping time increased. The degree of changes in properties during steeping was different between two waxy rice cultivars.

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Quality Characteristics of Dumpling Shells Containing Loquat Leaf Powder (비파잎 분말 첨가가 만두피의 품질 특성에 미치는 영향)

  • Park, In Duck
    • Journal of the East Asian Society of Dietary Life
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    • v.22 no.6
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    • pp.795-801
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    • 2012
  • This study was conducted to investigate the effects of loquat (Eriobotrya japonica Lindl.) leaf powder (LLP) on quality characteristics of dumpling shells. Dumpling shell samples were prepared with wheat flour containing different amounts of LLP, and their characteristics were then investigated. Amylography revealed that the gelatinization temperature of the LLP-wheat flours composite increased, while the initial viscosity at $95^{\circ}C$, viscosity at $95^{\circ}C$ after 15 minutes, and maximum viscosity, all decreased with increasing LLP content. As increasing amounts of LLP were added, the L and a values were reduced, whereas the b value was increased. Moreover, the addition of LLP increased hardness, cohesiveness, and adhesiveness, while it reduced springiness. Overall, sensory evaluation revealed that dumpling shells with 5% LLP were preferred more than other samples.

A Study on the Characteristics of Mandu-pi Differing in Roasted Soy Flour Content (볶은 콩가루 첨가를 달리한 만두피의 특성 연구)

  • 변진원;남혜원;우인애
    • The Korean Journal of Food And Nutrition
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    • v.14 no.4
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    • pp.287-292
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    • 2001
  • The purpose of this study was to investigate the effect of roasted soy f1our on the characteristics of Mandu-pi. Various Mandu-pi samples were prepared with wheat flour along with the addition of different amount of roasted soy flour. and then instrumental characteristics and sensory evacuation were investigated. As a result of amylography study, there were no difference In the initial pasting and maximum viscosity temperatures between samples. And maximum viscosity decreased with the increase of flour addition. In farinography study, the addition of roasted sop f1our did not affect the gelatinization temperature, while stability and developing time of dough increased by addition of soy flour level. Besides cooked weight, cooked volume and water absorption of Mandu-pi were also higher significantly than control. The more soy flour was added, the less lightness and more redness and yellowness were obtained. The result of sensory evaluation revealer that there were no differences between samples in beano aroma, smoothness, and chewness. However Mandu-pi added roasted soy flour showed higher scores in surface appreance, nutty aroma, nutty taste. sweet taste, and overall preferance than control.

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Quality Characteristics of Semi-Dry Noodles Prepared with Various Dry Rice Flours (건식 쌀가루 첨가 반건면의 품질특성)

  • Park, Bock-Hee;Koh, Kyeong-Mi;Jeon, Eun-Raye
    • Human Ecology Research
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    • v.58 no.1
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    • pp.121-130
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    • 2020
  • This study evaluated the quality characteristics of semi-dried noodles prepared with various dry rice flours (0, 25, 50, 75, and 100%) in order to develop the most preferred noodle recipe and to increase rice consumption. Amylography measured the viscosity of composite dry rice flour-wheat flour and indicated that the gelatinization point and maximum viscosity decreased as the level of dry rice flour increased. Both L and a values for cooked noodle significantly increased as the dry rice flour increased; however the L value decreased for uncooked of noodles. Weight, volume and water absorption of cooked semi-dried noodles significantly decreased as the dry rice flour increased; however the turbidity of soup increased. Texture properties such as hardness, springiness, cohesiveness, and adhesiveness decreased as the level of dry rice flour increased. As the amount of rice flour added increased, large particles of gluten were reduced while smaller particles of starch increased by scanning electron microscopy (SEM). The color, taste, and overall preference of 75% noodles were the highest in the sensory characteristics. The results, showed that the addition of dry rice flour positively affects the overall sensory characteristics of semi-dried noodle with 75% representing the optimal level for addition.

Quality Characteristics of Dried Noodles Made with Boehmeria nivea Powder (모시잎 분말을 첨가한 국수의 품질 특성)

  • Park, Bock-Hee;Kim, Gum-Yue;Cho, Hee-Sook
    • Journal of the East Asian Society of Dietary Life
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    • v.24 no.3
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    • pp.375-382
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    • 2014
  • The principal objective of this study was to evaluate the quality characteristics of dried noodles when different concentrations of Boehmeria nivea powder were added to wheat flour. Cooking quality, mechanical textural properties, and viscosity were measured, and sensory evaluation was conducted with the prepared noodles. The gelatinization points of the composite Boehmeria nivea powder-wheat flours increased. The viscosity at $95^{\circ}C$, viscosity at $95^{\circ}C$ after 15 minutes, and maximum viscosity values of the samples decreased, as the Boehmeria nivea powder content increased as measured via amylography. The L and b values decreased and a value increased with increasing amounts of Boehmeria nivea powder. Further, the color values, weight and volume of the cooked noodles increased, along with the turbidity of the soup with increasing amounts of Boehmeria nivea powder. Regarding textural characteristics, Boehmeria nivea powder additive increased hardness and reduced adhesiveness, cohesiveness, and springiness. Overall, noodles prepared with 15% Boehmeria nivea powder were preferred compared to other noodles, according to the results of our sensory evaluation.

Quality Characteristics of Dried Noodle containing Capsosiphon fulvescens Powder (매생이 분말을 첨가한 국수의 품질 특성 연구)

  • Park, Bock-Hee;You, Mi-Jin;Cho, Hee-Sook
    • Journal of the East Asian Society of Dietary Life
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    • v.25 no.2
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    • pp.300-308
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    • 2015
  • This study investigated the quality of noodles containing different amounts of Capsosiphon fulvescens powder. Noodles were prepared with C. fulvescens powder at ratios of 0, 1, 2, 3 and 4% based on flour weight. Cooking quality, mechanical texture properties, and viscosity were measured, and a sensory evaluation was performed with the prepared noodles. Gelatinization points of the composite C. fulvescens powder-wheat flours increased. As measured via amylography, viscosity at $95^{\circ}C$, viscosity at $95^{\circ}C$ after 15 minutes, and maximum viscosity values of samples decreased as C. fulvescens powder content increased. As increasing amounts of C. fulvescens powder were added, L, a and b values decreased, whereas color values, weight, and volume of cooked noodles increased, as did turbidity of the soup. In the texture meter test, hardness, cohesiveness, and springiness increased according to increasing concentrations of C. fulvescens powder. However, adhesiveness of noodles decreased by addition of C. fulvescens powder. Sensory evaluation showed that high quality cooked noodles could be produced by 3% inclusion of C. fulvescens powder.

Quality Characteristics and Antioxidantive Activities of Spirulina Added Korean Rice Cake(Garaeduk) during Storage (스피루리나를 첨가한 떡볶이떡의 저장기간 중 품질 특성 및 항산화성)

  • Kim, Mi-Yeon;Jeong, Yun-Kyung;Son, Chan-Wok;Jhon, Eun-Sook;Kim, Mee-Ree
    • Food Science and Preservation
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    • v.16 no.1
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    • pp.8-16
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    • 2009
  • This study evaluated the quality characteristics of Garaeduk, a traditional Korean rice cake, to which Spirulina (0, 1, 2, 3%, all w/w) was added. Moisture content of Spirulina-containing Garaeduk both before and after cooking increased with Spirulina level. During storage, moisture content was greater in Spirulina-containing cakes compared with control cakes, and the Hunter color L and b values of Spirulina-containing cakes decreased. Textural properties (hardness, chewiness), measured using a texture analyzer, of Spirulina-containing cakes were greater than those of control. During storage, hardness and chewiness of Spirulina-containing cakes remained higher than those of control cakes. The antioxidant activities of Spirulina-containing cakes increased with Spirulina content, owing to increased phycocyanin levels. Amylography showed that peak viscosity, and thus gelatinization temperature, of Spirulina-containing Garaeduk cakes were similar. Sensory preference tests revealed that Garaeduk with 2% Spirulina had the highest scores for color, odor, taste, and overall preference. It is suggested that Spirulina to 2% can be added to Garaeduk to improve quality.

Quality Characteristics of Dried Noodle Made with Lotus Root Powder (연근분말을 첨가한 국수의 품질특성)

  • Park, Bock-Hee;Cho, Hee-Sook;Bae, Kyoung-Yun
    • Korean journal of food and cookery science
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    • v.24 no.5
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    • pp.593-600
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    • 2008
  • The principal objective of this study was to evaluate the quality characteristics of dried noodles when different concentrations of Lotus root powder were added to the wheat flour. The cooking quality, mechanical textural properties, and viscosity were measured, and a sensory evaluation was conducted with the prepared noodles. The gelatinization points of the composite Lotus root powder-wheat flours were shown to have increased and the viscosity at $95^{\circ}C$, viscosity at $95^{\circ}C$ after 15 minutes, and maximum viscosity values of those samples were reduced, as the Lotus root powder content was increased as measured via amylography. As increasing amounts of Lotus root powder were added, the L and b values were reduced, and the color values, weight, and volume of the cooked noodles increased, as did the turbidity of the soup. With regard to the textural characteristics, the Lotus root powder additive increased hardness and reduced adhesiveness, cohesiveness, and springiness. Overall, the noodles prepared with 15% Lotus root powder were preferred more than the other noodles, according to the results of our sensory evaluation.

Effects of Alum on the Physicochemical properties (쌀전분의 이화학적 성질에 미치는 명반 첨가의 영향)

  • Lee, Shin-Young;Lee, Sang-Gui;Kim, Kwang-Joong;Kwon, Ik-Boo
    • Korean Journal of Food Science and Technology
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    • v.25 no.4
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    • pp.355-359
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    • 1993
  • The effects of alum un the physicochemical properties of non-waxy and waxy rice starches were investigated. The swelling powers of non-waxy and waxy rice starches with $0.05{\sim}1.0%(w/w)$ alum were increased remarkably in comparison with rice starches without alum, but those of rice starches with alum above 1.0%(w/w) concentration were decreased slowly with the increasing amount of alum. While solubility of the non-waxy starch with $0.05{\sim}1.0%(w/w)$ alum was elevated gradually with the increasing temperature. that of the waxy starch was decreased regardless temperature. But solubilities of both rice starches with alum concentration above 1.0%(w/w) exhibited no significant changes. The more alum in the system, the higher and the lower blue value were resulted in non-waxy rice starch and waxy rice starch, respectively. From amylograms, it was found that alum increased breakdown and initial pasting temperatures for both rice starches, but reduced setback.

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