• Title/Summary/Keyword: Discoloration

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Proposition for Duplicaion of Traditional Costumes for Alternate Exhibition (대체전시용 복식유물의 제작을 위한 제안)

  • Park, Sung-Sil;Park, Chi-Sun
    • Journal of the Korean Society of Costume
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    • v.58 no.5
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    • pp.232-246
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    • 2008
  • The museum starts from drawing many visitors by opening remarkable exhibitions, and finally aims to realize the social and educational value. However artifacts on exhibition have antithetic conditions like limitation of collection, problems of preservation, etc. Already the museum exhibited paintings and fine arts reproduced with complete fidelity, so artistic artifacts have meet the aims of exhibition. we would like to make an alternative proposal about costume relics in this way. Costume relics need to reproduce in two ways. The one way is to reproduce with complete fidelity and the other way is to restore the original form. The reproduction and restoration need a concrete survey, historical research, textile like artifacts. Furthermore it is important to reconstruct breakage and discoloration. Permanent exhibition consisted of reproductions helps appreciating as well as protecting artifacts, so exhibition effect will be enhanced.

Colorimetric Values of Various Myoglobin Derivatives in Pork and Beef Ribeye

  • Whang, Key;Lee, Sam-Pin;Kim, Hyuk-Il
    • Preventive Nutrition and Food Science
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    • v.9 no.2
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    • pp.183-186
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    • 2004
  • Various myoglobin derivatives were manufactured in pork and beef ribeye in the laboratory and their colorimetric values were measured with a chromameter. The average values of L* and a* of pork pigments were higher and b* values were lower than those of beef pigments. Oxymyoglobin (bright red) is considered to be a desirable fresh red meat pigment for consumer acceptance. The means of L*, a* and b* values of oxymyoglobin were 36.41, 27.32 and 4.71 for pork and 30.54, 25.58 and 9.81 for beef, respectively. Nitrosyl hemochrome, the pigment of processed meat products like sausages and hams had L*, a* and b* values of 47.93, 26.85 and 6.63 for pork and 41.82, 23.19 and 11.82 for beef. It was found that as a discoloration developed in meat and the meat color turned to brown, the L*, b* values increased and the a* value decreased.

A study regarding the reaction of tetracycline solution in a discolored tooth model using hydroxyapatite granules.

  • Yamaguchi, H.;Shamoto, H.;Sugihara, H.;Yamazaki, Y.;Oshima, T.;Kobayashi, K.;Maeda, N.;Arai, T.
    • Proceedings of the KACD Conference
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    • 2001.11a
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    • pp.564.2-564
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    • 2001
  • For the purpose of explaining the mechanism of tooth discoloration caused by tetracycline (TC), a study was conducted by setting up the following in vitro system. Being evaluated were the TC concentration to give an optimum reaction state when it acted on hydroxyapatite(HA) granules and the absorbing wavelength of TC that had been irradiated with ultraviolet (UV) rays.(omitted)

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Color Changes in Fresh-cut Fruit and Vegetables and Its Pretreatment Processing (신선편이 (fresh-cut) 식품의 변색 및 포장 전 처리방법)

  • Kim, Ki-Myong
    • KOREAN JOURNAL OF PACKAGING SCIENCE & TECHNOLOGY
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    • v.14 no.1
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    • pp.23-29
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    • 2008
  • The market sales of fresh-cut fruit and vegetables have grown rapidly in recent decades as a result of changes in consumer trend. Choosing the proper pretreatment of fruit and vegetables before minimally processing is very important because appearance is the most fundamental factors affecting the quality of fresh-cut products. This review describes the biochemical bases for color changes of fruit and vegetables including browning, discoloration, and color changes of carrots and alliums. Understanding pathway of pigments in minimally processed fruit and vegetable and preventing the way of color change should be emphasized for successive packaging system. This review also describes pretreatment of fresh-cut fruit and vegetables to improve the prolonging the shelf-life and maintenance of its qualities.

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Hepatic Hemochromatosis in a Toco Toucan (Ramphastos toco) (토코투칸에서 발생한 간 혈색소침착증(Hemochromatosis))

  • Kim, Yong-Ahn;Lee, Bo-Ram;Kim, Yang-Beom;Jeon, Jae-Kyoung;Oh, Suk-Hun;Youn, Soong-Hee;Kwon, Soo-Whan;Kim, Dae-Yong
    • Journal of Veterinary Clinics
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    • v.30 no.4
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    • pp.329-331
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    • 2013
  • An 11-year-old female toco toucan (Ramphastos toco) kept in outdoor exhibit was presented with sudden onset of anorexia and hypodynamia. After routine physical examination, the patient was treated. However, the bird died that evening. Necropsy revealed moderate swelling of the liver with yellowish discoloration. Based on the gross pathology as well as histologic evidence of iron pigments accumulation throughout the hepatocytes, hepatic hemochromatosis was diagnosed.

Pathological observation of mulberry heart disease of pigs in Korea (Mulberry heart disease의 병리학적 관찰)

  • Chung, Un-ik;Kim, Hong-jib;Eun, Gil-soo
    • Korean Journal of Veterinary Research
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    • v.37 no.3
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    • pp.601-606
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    • 1997
  • Mulberry heart disease was associated with vitamin E and selenium deficiency of pigs. Anatomical findings of this disease were hydropericadium, extensive patchy hemorrhage of epicardium, endocardium, and discoloration of dark red color of myocardium. In histological findings were characterized by acute myocardial degeneration, extensive hemorrhage, fibrinoid degeneration of arterioles, PAS positive material deposition of arterioles and capillary thrombosis. In affected herds, feed and serum tocopherol and selenium concentration were less than normal values.

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The Cause of Whitening by Flame Retardants Treatment on Korean Wooden Cultural Heritage

  • Kim, Jin Qyu;Chung, Yong Jae;Lee, Hwa Soo;Seo, Hyun Jeong;Son, Dong Won;Han, Gyu-Seong
    • Journal of the Korean Wood Science and Technology
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    • v.44 no.4
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    • pp.589-599
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    • 2016
  • Korean wooden cultural heritages are treated by flame retardants to protect fire hazards. Two types of flame retardants are used to treat wooden cultural heritage. These flame retardants cause some problems such as surface whitening, discoloration, and cracks due to the chemical reaction caused by Korean traditional wood painting (Dancheong), flame retardant and wood humidity. The Korean government is trying to cut down on the amount of flame retardants for the wooden cultural heritage because of these problems. This study was carried out to find the cause of whitening by flame retardants treatment. The reaction between pigment and flame retardant chemicals was analyzed by infrared spectroscopy.

Effects of Salt, $Glucono-\delta-Lactone$ and High Pressure Treatment on Binding Properties of Restructured Pork

  • Hong, Geun-Pyo;Perk, Sung-Hee;Kim, Jee-Yeon;Ko, Se-Hee;Lee, Sung;Min, Sang-Gi
    • Proceedings of the Korean Society for Food Science of Animal Resources Conference
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    • 2006.05a
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    • pp.219-223
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    • 2006
  • In the current study, the addition of either NaCl or GdL Increased the binding strength and it considered that the use of GdL with or without low NaCl concentration improved the binding strength of restructured pork meat. Major deterioration of GdL addition is cooked-like discoloration. However, the combination with washing process or addition of carrageenan could improve cold-set binding properties of restructured pork, even if low NaCl or GdL were added.

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Influences of Storage Temperature and Periods on the Physical Properties of Ice Cream

  • Park, Sung-Hee;Hong, Guen-Pyo;Kim, Jee-Yeon;Ko, Se-Hee;Min, Sang-Gi
    • Proceedings of the Korean Society for Food Science of Animal Resources Conference
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    • 2006.05a
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    • pp.272-276
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    • 2006
  • In this research, storage temperature and periods had significant influence on the physical properties of ice cream. Lower storage temperature reduced the ice re-crystallization and discoloration of ice cream. Increased melt resistance was observed at the lower storage temperature, inducing a good shape retention of ice cream.

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First Report of Bacterial Wilt Caused by Ralstonia solanacearum Biovar 2 Race 1 on Tomato in Egypt

  • Seleim, Mohamed A.A.;Abo-Elyousr, Kamal A.M.;Abd-El-Moneem, Kenawy M.;Saead, Farag A.
    • The Plant Pathology Journal
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    • v.30 no.3
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    • pp.299-303
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    • 2014
  • This study aims to isolate and identify the causal pathogen of tomato bacterial wilt in Egypt. In 2008, tomato plants showing typical symptoms of bacterial wilt disease with no foliar yellowing were observed in Minia, Assiut and Sohag governorates, Egypt. When cut stems of symptomatic plants were submerged in water, whitish ooze was evident and longitudinal sections showed a brown discoloration in the vascular tissues. Bacteria were isolated on triphenyl tetrazolium chloride medium and fifteen isolates shown typical morphological and cultural characteristics were confirmed as Ralstonia solanacearum biovar 2 race 1. Pathogenicity tests showed that all isolates proved to be pathogenic to tomato plants, varied from 52 to 97% wilting. This is the first report of R. solanacearum biovar 2 race 1 causing bacterial wilt in tomato crop in Egypt.