• Title/Summary/Keyword: texture change

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The Study on Storage Stability according to Packaging Material of Traditional Sesame Dasik (깨다식의 포장재에 따른 저장성 조사)

  • 김진숙;한영실
    • The Korean Journal of Community Living Science
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    • v.15 no.2
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    • pp.179-187
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    • 2004
  • The purpose of this study is to investigate the preservation of traditional sesame dasik when stored in different packaging material by comparing its physical and sensorial characteristics. The quality and sensory characteristics of sesame dasik that were evaluated were moisture content, water activity, number of microflora, texture profile, Hunter color different value, and sensory properties (color, chewiness, overall acceptability, etc) during the storage at 35\pm1^\circ{C}$ temperature and $73\pm{2%}$ relative humidity. And the packaging materials were paper boxes (coated 0.02mm thickness polyethylene film), plastic boxes, and oriented polypropylene laminated film. Traditional sesame dasik is made from sesame powder 100g, honey 25g, rice syrup 25g, and table salt 0.5g. During the storage period, the changes in water content and water activity of sesame dasik with different packaging material showed a slight decline. On the other hand, it increased in hardness, and "a" and "b" value of Hunter color difference during the storage. Texture profile analysis data change in hardness was the greatest after the third day in a paper box, and it was affected by the moisture content of dasik and the temperature and relative humidity of the air. Therefore plastic boxes or oriented polypropylene laminated film was found to be better suited than paper boxes for storing sesame dasik.

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Physicochemical Properties and Antioxidant Activity of Yanggaeng Containing Hizikia fusiformis Powder (톳(Hizikia fusiformis) 분말을 첨가한 양갱의 이화학적 품질특성 및 항산화 효과)

  • Lee, Yeon-Ji;Kim, Won-Suk;Jeon, You-Jin;Kim, Yong-Tae
    • Korean Journal of Fisheries and Aquatic Sciences
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    • v.53 no.4
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    • pp.588-596
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    • 2020
  • The seaweed Hizikia fusiformis is rich in protein, carbohydrates, vitamins, and minerals. We investigated the physicochemical properties and antioxidant activities of yanggaeng made with agar, sugar, honey, oligosaccharide, cooked white bean paste, and different amounts (0, 1, 2, 3, 4, and 5%) of H. fusiformis powder. The proximate composition, pH, sugar content, color, texture, antioxidant activity, and sensory properties of the yanggaeng were investigated. The moisture and sugar contents of the yanggaeng did not change despite increasing the amount of H. fusiformis. The pH decreased with increasing H. fusiformis. The lightness decreased significantly, whereas the redness and yellowness increased with increasing amounts of H. fusiformis. In the texture profile analysis, the hardness, gumminess, and chewiness decreased with increasing H. fusiformis content. The antioxidant activity of the yanggaeng increased with the concentration of the H. fusiformis powder. The yanggaeng containing 2% H. fusiformis had the highest overall sensory acceptance score. The addition of H. fusiformis to yanggaeng appears to improve its quality and antioxidant activity.

Physicochemical Properties and Antioxidant Activity of Yanggaeng Containing Pyropia yezoensis (김(Pyropia yezoensis)을 첨가한 양갱의 이화학적 품질특성 및 항산화효과)

  • Lee, Yeon-Ji;Kim, Won-Suk;Jeon, You-Jin;Kim, Yong-Tae
    • Korean Journal of Fisheries and Aquatic Sciences
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    • v.53 no.5
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    • pp.672-680
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    • 2020
  • This study investigated the physicochemical properties and antioxidant activities of yanggaeng prepared from agar, sugar, honey, oligosaccharide, cooked white bean paste, and different amounts (0, 0.5, 1.0, 1.5, 2.0, and 2.5%) of Pyropia yezoensis powder. The moisture, pH, sugar content, color, texture, antioxidant activity, and sensory properties of yanggaeng were investigated. The moisture content of yanggaeng did not change despite the increasing amount of P. yezoensis. The pH and sugar content decreased with increasing P. yezoensis concentration. The lightness decreased significantly, whereas the redness and yellowness increased with increasing amounts of P. yezoensis. Regarding texture profile analysis, the hardness, gumminess, chewiness, and cohesiveness decreased with increasing P. yezoensis content. The antioxidant activity of yanggaeng increased with increasing concentrations of P. yezoensis powder. Yanggaeng containing 2.5% P. yezoensis had the highest overall sensory acceptance score. Therefore, the addition of P. yezoensis to yanggaeng appears to improve its quality and antioxidant activity.

A Study of the Physical Characteristics of Backsulgi by the Amount of Water and Some Kinds of Sweeteners (당의 종류와 물의 첨가량에 따른 백설기의 물리적 특성에 관한 연구)

  • Yoo, Ahe-Ryoung;Lee, Hyo-Gee
    • Journal of the Korean Society of Food Science and Nutrition
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    • v.13 no.4
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    • pp.381-388
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    • 1984
  • The objective of this study was to evaluate the effect of the amount of water and several kinds of sweeteners on the texture such as grain appearance, softness, moistness, chewiness, cohesiveness, gumminess and elasticity of Backsulgi when one manufactures Backsulgi. Different amount of water of 30 ml, 60 ml and 90 ml/350 g of powdered rice and such sweetners as sugar, honey and syrup were employed for the experimental treatments. The evaluation of these results were dependent on statistical data of some scores that were obtained through sensory evaluation and Instron Universal Testing Machine. According to this sensory evaluation, the texture of Backsulgi was more affected by the change of water quantity than that of sweeteners. Judging from the results of Instron Universal Testing Machine, it was found that there were no statistically significant differences in each treatment of the cohesiveness, elasticity and hardness of Backsulgi, but some statistically significant difference was observed in each treatment of the gumminess and chewiness of Backsulgi(p<0.05).

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A Study on Quality Characteristics and Storage of Julpyun Affected by Chungmirae(Smilax china L.) leaf powder (청미래덩굴잎분말을 이용한 절편의 특성 및 저장성에 관한 연구)

  • Lee Hyo-Soon;Jang Myung-Sook
    • Korean journal of food and cookery science
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    • v.21 no.4 s.88
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    • pp.482-489
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    • 2005
  • Chungmiraejulpyuns made with various levels of Chungmirae leaf powder$(0-7\%)$ was studied to investigate the sensory and mechanical characteristics. Chungmirae juipyun was prepared with 3% Chungmirae leaf powder showed the most favorable tendencies in color, flavor and overall-acceptability. However, Chungmiraejulpyun prepared with $1\%$ Chungmirae leaf powder showed the most excellent tendency in taste, moistness and after-swallowing. In the texture meter measurement for Chungmiraejulpyun, hardness and springiness tended to increase with increasing Chungmirae leaf powder. Adhesiveness and cohesiveness showed significant differences. Texture characteristics of Chungmiraejulpyuns was prepared with $5\%\;and\;7\%$ Chungmirae leaf powder and stored at $20^{\circ}C$ for 60 days showed less change than those of the $0\%$ and $1\%$ groups. Gumminess and chewiness showed a similar tendency as hardness and there were significant differences due to changes in the additional rate of Chungmirae and storage time.

Quality Characteristics and Antioxidant Properties of White Pan Bread Added with Sea Buckthorn (Hippophae rhamnoids L.) Berry Powder (비타민나무열매가루 첨가 식빵의 품질 특성 및 항산화 활성)

  • Lee, Jong Suk;Kim, Jung Mi
    • The Korean Journal of Food And Nutrition
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    • v.33 no.5
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    • pp.473-482
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    • 2020
  • The purpose of this study was to prepare bread added with sea buckthorn (Hippophae rhamnoides L.) berry powder (SBBP) (1, 3, and 5%) using a straight dough method. The quality and antioxidant characteristics of the bread were analyzed. The results indicated that the pH value and dough raising power of the dough decreased and the moisture content of the bread added with SBBP increased compared to that without the SBBP. The crust color of the bread did not change significantly. However, the crumb lightness value decreased and the redness and yellowness value increased respectively to the concentration of the SBBP. The texture measurement indicated that the hardness, gumminess, and chewiness of the bread increased with the addition of the SBBP. The total polyphenol content of the bread supplemented with the SBBP was increased (4.60~16.14 mg GAE/g) compare to the control (1.67 mg GAE/g). Dose-dependent, significant-high DPPH (26.86%) and ABTS (42.52%) radical scavenging activities were observed in the bread with the addition of the SBBP up to 5%. Based on these results, the optimum amount of the SBBP to add for baking bread would be 3% and the SBBP could be considered a functional agent.

Effects of Dietary Fiber and Stevioside Mixture on Quality Attributes of Sausage and the Blood Properties of Rats

  • Kang, Jong-Ok;Hong, Sung-Moon
    • Food Science of Animal Resources
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    • v.32 no.2
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    • pp.142-148
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    • 2012
  • This study was conducted to examine the physiochemical characteristics (PC) of a sausage with added dietary fiber and stevioside mixture, as well as the blood properties (BP) of rats with feeding of the sausage. There were no significant differences between the control and the treatments in the PC; in case of treatments, as additive contents of dietary fiber (1-3%) and stevioside (0.05-1.5%), redness ($a^*$) gradually increased, but yellowness ($b^*$) rapidly decreased (p<0.05). The pH level and water holding capacity (WHC) also tended to decrease. Thiobarbituric acid reactive substances (TBARS) were of little change. However, the texture of sensory evaluation and the adhesiveness of texture analysis had significantly low values (p<0.05). BP, such as blood sugar, high density lipoprotein (HDL) cholesterol, low density lipoprotein (LDL) cholesterol and triglyceride (TG), did not increase and total cholesterol (TC) actually decreased (p>0.05). However, body weights of rats increased with treatments. Overall, it is suggested that adding dietary fiber and stevioside mixture to sausages can moderately improve the redness, and also reduce the levels of sugar, cholesterol and neutral lipids in the blood without noticeably affecting the WHC, oxidant stability, appearance, and taste.

Studies on the Frozen Storage of Ascidian, Halocynthia roretzi (우렁쉥이(Halocynthia roretzi)의 동결저장(凍結貯藏)에 관(關)한 연구(硏究))

  • Park, Choon-Kyu
    • Korean Journal of Food Science and Technology
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    • v.28 no.6
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    • pp.1021-1025
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    • 1996
  • The experiments were carried out to find how the processing of ascidian (Halocynthia roretzi) was affected by the frozen storage. The quality of ascidian which takes the shell-on was changed quickly in the frozen storage. The causes of the change were as follows: 1. the damage caused by the ice crystal in the muscle, 2. a lot of drips after thawing, 3. the discoloration of the muscle after thawing. On the contrary, the quality of ascidian which takes the shell-off was even better in color, texture, yield and drips after 60 days of the frozen storage. But the muscle was blackened after that.

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Standardization of Ingredient Ratios of Wooung (Burdock, Arctium lappa, L) Kimchi (우엉김치 재료배합비의 표준화)

  • 박건영;최미정;한지숙;이숙희
    • Journal of the Korean Society of Food Science and Nutrition
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    • v.27 no.4
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    • pp.618-624
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    • 1998
  • This study was conducted to standardize ingredient ratios of wooung kimchi. The ingredient ratios of model wooung kimchiwere determined by the survey in Pusan and Kyungnam province and using the literatures including cooking books. Several kinds of wooung kimchi were prepared by adjusting the ingredient ratios fo the model wooung kimchi within standard deviation. The wooung kimchi with different ingredient ratios were fermented for 6 days at 15$^{\circ}C$. The chemical, microbial and sensory properties of the wooung kimchi were investigated. There was little change in pH but the counts of lactic acid bacteria were decreased, as the ratio of pickled anchovy juice became high. The wooung kimchi adding 9.4% pickled anchovy juice obtained high score in appearance and overall acceptability. The counts of lactic acid bacteria were increased in wooung kimchi adding 5% red pepper powder, and there was obtained better result in appearance, texture and overall acceptability than the other groups. The activity, reducing sugar and counts of lactic acid bacteria were increased, as the ratio of glutinous rice paste became high. The wooung kimchi including 6% glutinous rice paste showed the highest score in overall acceptability. The fermentation process of wooung kimchi accelerated, as the ratio of garlic became high. The wooung kimchi adding 3% garlic showed good appearance and acceptability. In addition to these, the addition of 1.3% ginger ehhanced the appearance, texture and overall acceptability fermented anchovy juice, 5.0% red pepper powder, 6.0% glutinous rice paste, 3.0% crushed garlic and 1.3% crushed ginger.

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Textures Evolution of Rolled AA5182 Alloy Sheets after Annealing (알루미늄 5182 압연 판재의 어닐링 집합조직)

  • Kim Kee Joo;Shin Kwang Seon;Jeong Hyo-Tae;Paik Young-Nam
    • Transactions of the Korean Society of Automotive Engineers
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    • v.13 no.6
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    • pp.128-134
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    • 2005
  • In order to fabricate the aluminum alloys with good drawability, the textures evolution of the AA5182 sheets after rolling and annealing was studied. The measurement of the deformation textures was carried out for the sheets which were cold rolled with high reduction ratio by using the symmetric roll. In addition, the change of the recrystallization texture was investigated after heat-treatments of the rolled sheets with various heat treatment conditions. Rolling without lubrication and subsequent annealing led to the formation of favorable $rot-C_{ND}\;\{001\}<110>\;and\;{\gamma}-fiber ND//<111>$ textures in AA5182 sheets. From the results, the ${\gamma}$-fiber ND//<111> component well evolved during rolling at highest reduction ratio (over $90\%$, l/d parameter of 6.77). Among shear deformation textures, the ${\gamma}$-fiber ND//<111> was not rotated in holding time of $180\~7,200$ seconds at $350^{\circ}C$. The Monte-Carlo technique was used and could be representatively simulated these textures evolution during recrystallization.