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Quality of Tteokbokki tteok prepared by adding various concentration of brown rice (흑미 첨가량을 달리한 떡볶이 떡의 품질에 관한 연구)

  • Shin, Dong-Sun;Yoo, Seon-Mi;Han, Gwi-Jung;Oh, Se-Gwan
    • Food Science and Preservation
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    • v.23 no.2
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    • pp.194-203
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    • 2016
  • The purpose of this study was to investigate the properties of tteok prepared from white (Samkwang) and brown rice (Heugseol, Heugjinju). The moisture and crude protein contents of rice were 14.89~17.15% and 4.79~6.81%, respectively. The crude lipid and crude ash contents of rice were 0.48~2.66% and 0.39~1.60%, respectively. The water binding capacity of Heugjinju (141.97%) was higher than those of other rice flours. As the soaking time increased, water absorption ability was in the order of Samkwang > Heugseol > Heugjinju. Using a rapid visco analyser (RVA), the initial pasting temperature of Heugseol was the highest, and the peak viscosities of Heugseol were higher than those of other rice flours. The quality characteristics of Tteokbokki tteok were assessed after its preparation by adding different amounts of Heugseol and Heugjinju (0, 5, 10, and 20%, w/w) content. The textural properties (hardness), of Heugseol and Heugseol measured using a texture analyzer, were greater than those of the control. Sensory preference tests revealed that 10% Heugseol and, 10% Heugjinju had the highest scores in appearance, color, and overall acceptability. The sensory test results revealed that Tteokbokki tteok prepared by addition of 10% added brown rice was the best.

Preparation and Quality Analysis of Fish Paste Containing Styela clava Tunic (미더덕 껍질 분말을 함유한 어묵의 제조 및 품질 분석)

  • Choi, So-Yeon;Choi, Eun-Yeong;Lee, Kyung-Eun;Song, Ae-Sun;Park, So-Hyeon;Lee, Seung-Cheol
    • Journal of the Korean Society of Food Science and Nutrition
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    • v.41 no.11
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    • pp.1591-1595
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    • 2012
  • Styela clava (Korean name: miduduk) tunic was produced as a byproduct after processing of S. clava. To utilize S. clava tunic, fish paste containing tunic powder was prepared, and quality characteristics were evaluated for color, textural properties, and sensory attributes. Increasing the amount of S. clava tunic in fish paste tended to decrease lightness (L), redness (a), and yellowness (b) values of the surface part of fish paste. Strength and hardness of fish paste increased with increasing amount of tunic. All test samples with 3 mm thickness showed good flexibility and did not break even after folding in half four times. For overall acceptance in the sensory evaluation, fish paste containing 1% S. clava tunic acquired a relatively higher score. These results suggest that S. clava tunic can be applied to fish paste products to improve quality and functionality.

The Quality Changes of Watery Kimchi made of Wild Vegetables by the Pre-Treatment Methods (전처리 방법에 따른 산채 물김치의 품질변화)

  • Lee, Hyo Young;Kwon, Hye Jeong;Park, A Reum;Choi, Byung Kon;Heo, Nam Kee
    • Culinary science and hospitality research
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    • v.20 no.6
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    • pp.136-146
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    • 2014
  • This study aimed to determine the physiochemical changes during maturation to examine the preparation of watery Kimchi with wild vegetables from Gangwon Province, and its use. The wild vegetables in this study included Ligularia fischeri, Aster scaber Thunb, and Cirsium setidens; a comparison was made between preservation in a saline solution and pre-treatment with blanching. As for treatment before preparation of watery Kimchi, the water content was the lowest at 81.45% for Aster scaber Thunb preserved in a saline solution and was found to be 87.39% for blanched Cirsium setidens. Blanching resulted in higher L, b, and a values for color value than treatment with a saline solution and Ligularia fischeri got the highest hardness, followed by Aster scaber Thunb and Cirsium setidens, from both types of treatment. As for the physiochemical properties during maturation, the total soluble solid content and salinity were kept higher by treatment with a saline solution than by blanching, whereas pH tended to get lower in both types of treatment. Turbidity became higher one week after treatment with a saline solution, but varied insignificantly afterward by any type of treatment. As for free sugar, both types of treatment increased the content of glucose and fructose and kept that of sucrose and maltose constant during maturation. As for overall acceptability, blanched watery Kimchi made of Cirsium setidens got the highest preference.

Quality Characteristics of Tofu with Added Alfalfa (Medicago sativa L.) Extracts (알팔파 추출물을 첨가한 두부의 품질 특성)

  • Kim, Sang-Eun;Lee, Sang-Won;Yeum, Dong-Min;Lee, Moon-Jo
    • Journal of the Korean Society of Food Science and Nutrition
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    • v.41 no.1
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    • pp.123-128
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    • 2012
  • This study was conducted to investigate the quality characteristics of tofu (soybean curd) prepared with added alfalfa extracts (Medicago sativa L.). The moisture content, yield, and pH of tofu decreased according to the increase of an added quantity of alfalfa extract, whereas the crude protein and turbidity increased. The tofu made with additional alfalfa extracts gave a similar amount of crude ash with that of the control. The Hunter's L (lightness) color value decreased as the content of alfalfa extract increased, but the a (redness) and b (yellowness) values increased with increasing alfalfa extract concentration. Textural properties for hardness were higher but cohesiveness, springiness, gumminess, and brittleness were lower in alfalfa extracts with added tofu compared to those of control. Isoflavones such as daidzein and genistein content were significantly increased with increasing concentration of alfalfa extracts. A sensory evaluation indicated that the group with a 0.5% alfalfa extract showed the best color, flavor, taste, and overall acceptability results. In conclusion, adding alfalfa extracts could improve the physicochemical and sensory characteristics of tofu.

Quality Characteristics of Sponge Cake with Black Garlic Powder Added (흑마늘 분말을 첨가한 스펀지케이크의 품질 특성)

  • Lee, Jeong-Sug;Seong, Yu-Bin;Jeong, Bo-Young;Yoon, Seong-Jun;Lee, In-Sook;Jeong, Yoon-Hwa
    • Journal of the Korean Society of Food Science and Nutrition
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    • v.38 no.9
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    • pp.1222-1228
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    • 2009
  • This study was performed to investigate the quality characteristics of the sponge cakes with black garlic powder added such as cake batters, pH, height, specific volume, moisture contents, texture, color and sensory acceptability. Specific gravity of cake batters was increased as black garlic powder increased. Moisture contents, pH, height and specific volume of cakes were decreased as black garlic powder increased. In color of cake's crumb, lightness (L) and yellowness (b) was decreased as the black garlic powder increased, while redness (a) increased. Hardness, gumminess and chewiness was increased with the black garlic powder while springiness decreased in texture of the cakes. In sensory evaluation, flavor and taste of the cake was better than others when the 6% black garlic powder was added while overall acceptability was the highest when 4% black garlic powder was added.

Growth and Quality of Baby Leaf Vegetables Hydroponically Grown in Plant Factory as Affected by Composition of Nutrient Solution (양액 조성이 식물공장 재배 어린잎채소의 생육 및 품질에 미치는 영향)

  • Kwack, Yurina;Kim, Dong Sub;Chun, Changhoo
    • Journal of Bio-Environment Control
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    • v.24 no.4
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    • pp.271-274
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    • 2015
  • The objective of this study was to investigate the effects of composition of nutrient solution on the growth and quality of baby leaf vegetables (tat soi, romaine lettuce, beet, and red radish) hydroponically cultivated in plant factory. The seeds of four vegetable crops were sown in urethane sponges and cultivated for 14 days in a plant factory. Light intensity and photoperiod were $110{\mu}mol{\cdot}m^{-2}{\cdot}s^{-1}$ and 16 h, respectively; and air temperature in photo/darkperiod was maintained at $25/20^{\circ}C$. Tap water was used for irrigation for 7 days after sowing, and then plants were irrigated for 7 days using tap water and the nutrient solutions of Korea Wonshi, Japan Enshi, and Yamazaki for lettuce. At 14 days after sowing, the fresh weight of tah soi was highest in the nutrient solution of Yamazaki for lettuce, and there were no significant differences among nutrient solutions in beet and red radish. When we compared leaf color using Hunter's a value, the nutrient solution of Korea Wonshi and Japan Enshi increased green color in baby leaf vegetables, while the nutrient solution of Yamazaki for lettuce increased red color. Total phenolic content of romaine lettuce was highest in the nutrient solution of Korea Wonshi, but tat soi, beet, and red radish showed no significant differences among nutrient solutions in total phenolic contents. From these results, we suggest that using the nutrient solution of Korea Wonshi can enhance the growth and quality of romaine lettuce and the nutrient solution of Yamazaki for lettuce is appropriate for enhancing the growth and red color of beet and red radish in plant factory.

Effects of Abscisic Acid (ABA) and Fluridone on Red Coloration of 'Hongro' Apple Fruit Skins (Abscisic acid(ABA) 및 fluridone의 처리가 'Hongro' 사과의 과피 착색에 미치는 영향)

  • Ryu, Suhyun;Kwon, Yong Hee;Do, Gyeong Ran;Jeong, Jae Hoon;Han, Hyun Hee;Han, Jeom Hwa
    • Journal of Bio-Environment Control
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    • v.25 no.4
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    • pp.240-248
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    • 2016
  • The objective of this study was to determine the effect of exogenous abscisic acid (ABA) on the red coloration and endogenous ABA contents of apple fruit skins. ABA and fluridone (an ABA synthetic inhibitor, FD) was sprayed on 'Hongro' apple fruit skins at 107 days after full bloom (DAFB). Visual coloration and hunter's color values were not affected by the ABA and FD treatments. Anthocyanin contents in fruit skins increased similarly to hunter $a^*$ values of fruit skins, but ABA and FD did not affect its accumulations. Liquid chromatography analysis revealed that endogenous ABA contents in control fruit increased at first and then decreased from 12 hours after the treatment. ABA treatment increased ABA contents in fruit skins from 2 hour after the treatment and it lasted until the end of the treatments. FD decreased ABA contents in fruit skins from 6 hours after the treatment. ABA treatment increased MdNCED2 (an ABA biosynthetic gene), MdACO1 (an ethylene biosynthetic gene), and MdCHS and MdDFR expressions. However, MdUFGT expressions were not affected by ABA treatment.

Characteristics of Processed Food for Improvement Utilization of Sweet Persimmon (단감의 이용성 증진을 위한 특성 검토)

  • Choi, Yoon-Hee;Kim, Eun-Mi;Cho, Yong-Sik;Park, Shin-Young;Yang, Jeong-Min
    • Proceedings of the Korean Society of Community Living Science Conference
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    • 2009.09a
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    • pp.88-88
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    • 2009
  • 단감은 우리나라가 세계에서 가장 많은 양을 생산하는 대표 과일로 과잉생산과 수확기에 일시적인 홍수출하로 인한 가격이 하락하고, 기상이변에 의한 비상품 과일의 생산이 많아지나 전량 폐기되고 있으며, 유통 및 저장 중에 연화현상과 생리적장애로 품질이 저하되어 경제적 손실이 발생되므로 안정적 생산과 소비를 위하여 다양한 형태의 식품개발이 절실히 요구된다. 국내 감 생산량은 352,822톤이며 이 중 떫은감은 146,233톤(41.45%), 단감은 206,589톤(58.55%)으로 단감 생산량이 떫은감에 비하여 많으며 국내 단감 생산지는 진영, 순천, 문산, 담양, 장성 등 집단화 되어 있고, 원료확보가 유리하나 저장은 수확기인 10월 중순, PE필름 봉지에 넣고 밀봉하여 박스 등에 넣어 $0{\sim}1^{\circ}C$의 저온저장고에 이듬해 4월 중순까지 6개월 정도 저장 가능하나 저장비용이 많이 들고, 4월 이후에는 생리적 장해로 보관이 어렵다. 단감은 다른 과일에 비하여 높은 감미와 비타민 A, 비타민 B1, 비타민 C, 식이섬유 및 리코핀 성분이 다량 함유되어 있고, 노화와 암 발생을 억제하는 폴리페놀물질이 풍부하여 건강 기능성 과일로 알려져 있다. 본 연구에서는 시중에서 구입한 단감의 저온저장 중 감모율 및 이용성 구명을 위하여 관련특성을 검토하였다. 단감을 3월에 구입하여 $5^{\circ}C$에 저온저장하여 보관기간별 감모율을 조사하였고, 단감의 전 처리 후 당도, pH, 색도, 수분함량 등을 조사하였다. 3월에 시중에서 구입하여 PE필름에 봉한 채 종이박스 넣어 $5^{\circ}C{\pm}2$ 저온저장고에 저장하여 1개월 후에 조사한 결과 정상과가 75.47%, 25%미만 장해과가 14.37%, 50%이상 장해과가 10.16% 이었고, 2개월 후는 정상과가 41.52%, 25%미만 장해과가 42.88%, 50%이상 장해과가 15.61%이었다. 단감을 꼭지제거, 박피, 제핵 후 절단하여 파쇄 후의 당도는 14.8 $^{\circ}Brix$, pH는 6.0, 수분은 56.7%, 색도 L값은 39.8, a값이 12.6, b값이 22.7이었다. 파쇄한 단감을 $-20^{\circ}C$에 1차 냉동하여 해동 후 당도는 냉동 전 $14.8^{\circ}Brix$에서 $14.2^{\circ}Brix$로, 2차 냉동 해동 후는 $12.6^{\circ}Brix$로 감소하였으며, 색도 L값과 a값 및 b값은 냉동 전에 비하여 감소하였고, 수분함량은 냉동 전 64.4%, 1차 냉동 해동 후에 82.78%, 2차 냉동 해동 후에는 84.09%로 증가하였다.

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A Study on the Preparation and Evaluation of Dried Noodle Products made from Composite Flours utilizing Arrowroot Starch (칡전분 첨가국수의 제면특성에 관한 연구)

  • 이영순;임나영;이경희
    • Korean journal of food and cookery science
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    • v.16 no.6
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    • pp.681-688
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    • 2000
  • This study was an attempt to use arrowroot, a common plant in Korea used as food to relieve famine, for making noodles and to set up a standard formulation for arrowroot-starch-containing noodle. Arrowroot starch was mixed with wheat flour at a different ratio and used to make noodles. Cooking quality and texture were measured, and sensory evaluation was performed with the noodles prepared. Water binding capacity of arrowroot starch was higher than that of wheat flour. Maximum viscosity of the composite arrowroot-wheat flours was increased as the arrowroot starch content increased as measured by amylograph. Addition of arrowroot starch at 10% level improved the quality of noodles. Texture measurement showed that the noodles of the composite flour containing 10% or 20% arrowroot starch were superior to those of wheat flour alone; however, the scores of arrowroot-con-taming noodles were similar to those of wheat flour alone in sensory evaluation.

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Studies on Physico-chemical Properties of Spreadable Liver Sausage during Storage Period (저장기간에 따른 퍼짐형 간 소시지의 이화학적 특성에 관한 연구)

  • Hong, Geun-Pyo;Lee, Sung;Min, Sang-Gi
    • Food Science of Animal Resources
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    • v.23 no.1
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    • pp.56-62
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    • 2003
  • This study was carried out to evaluate the physicochemical properties of spreadable liver sausage manufactured from ostrich and pork during storage. It was found that the changes in pH of all treatments increased significantly over 7 d, but did not show significant difference in the remaining periods. L-value deceased with liver sausage containing ostrich liver and ostrich meat, but others showed only slight increase during storage periods. Although a-value of liver sausage containing pork meat was higher than that containing ostrich meat over 7 d of storage; after this period the trend of a-value was inverse. However, b-value in all treatments did not show significant difference during storage periods. The initial average TBA-value of all products was below 0.1 mg/kg. However, TBA-value increased to about 0.63 mg/kg, and 0.77 mg/kg at 7 and 21 d, respectively. Hardness of liver sausage containing ostrich meat and pork liver was higher than that containing pork meat and ostrich liver. Cohesiveness and elasticity did not show significant changes during storage periods.