• Title/Summary/Keyword: Pigmented

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Antioxidative Activity of Germinated Specialty Rices (발아 특수미의 항산화 활성)

  • Kang, Mi-Young;Kim, Sul-Yi;Koh, Hee-Jong;Chin, Joong-Hyoun;Nam, Seok-Hyun
    • Korean Journal of Food Science and Technology
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    • v.36 no.4
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    • pp.624-630
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    • 2004
  • Functionality changes by germination of giant embryonic rice and pigmented rice were evaluated with focusing on antioxidative activities of 70% ethanolic extracts. Overall, reducing power of giant embryonic rice and pigmented rice was higher than that of normal brown rice, and the germination of rices tend to enhance their reducing powers. In vitro and ex vivo experiments employing linoleic acid peroxidation and rabbit erythrocyte membrane peroxidation systems, respectively, revealed inhibitory effect on lipid peroxidation was highest in pigmented rice, followed by giant embryonic rice, and normal brown rice from high to low order. Superoxide radical-scavenging activity decreased in order of pigmented rice > giant embryonic rice > normal brown rice, and germination also enhanced their superoxide scavenging ability compared to non-germinated controls. Hydroxyl radical-scavenging ability was highest in pigmented rice, followed by giant embryonic rice, and normal brown rice. Despite marked enhancement in hydroxyl radical-scavenging ability of normal brown rice by germination, order of scavenging ability was not altered among germinated rices. Same trend as with in vitro ROS scavenging was observed for ex vivo scavenging potency on ROSs generated by TPA stimulation in HL-60 cells. Germination-associated differential increase in ROS scavenging ability of pigmented rice and giant embryonic rice, characterized by no induction of cytotoxicity, was observed.

Physicochemical Properties of Pigmented Rice Starch (Suwon-415) (수원 415호 유색미 전분의 이화학적 특성)

  • Lee, You-Seok;Cho, Ji-Mi;Rhee, Chong-Ouk
    • Applied Biological Chemistry
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    • v.46 no.2
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    • pp.90-93
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    • 2003
  • Physicochemical and gelatinization properties of Suwon-415 pigmented rice starch were determined. The median and mean particle sizes of Suwon-415 pigmented rice starch were 5.23 and $6.27\;{\mu}m$, whereas those of non-glutinous rice starch were 4.71 and $5.43\;{\mu}m$ respectively. Water-binding capacity, iodine reaction and intrinsic viscosity of Suwon-415 pigmented rice starch were lower than those of non-glutinous rice starch. X-ray diffraction patterns showed traditional A type of cereals and relative crystalline of both samples showed no difference. Peak viscosity, breakdown and setback were increased with increasing weight of starches.

Study on the Application of Indigenous Pigmented Rice for Garaedduk Adapted with Mechanically Impacting Technology (기계적 충격기술이 토종 유색미 함유 가래떡 노화지연에 미치는 효과)

  • Han, Seo-Young;Han, Gwi-Jung;Park, Hye-Young
    • Korean journal of food and cookery science
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    • v.28 no.1
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    • pp.17-24
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    • 2012
  • The present study was performed to expand the application of mechanically impacting technology reported in our previous studies. Several parameters were analyzed to research Korean indigenous pigmented rice. The proximate composition of Korean indigenous rice was the following; 12.0-13.4% moisture, 74.1-77.3% carbohydrate, 6.8-8.7% crude protein, 1.68-3.25% crude lipid, 0.78-1.38% crude ash, with a 6.6-7.07 pH value. The phenolic compound content of red rice was twice that of black rice. Moreover, antioxidative activity was estimated by DPPH radical-scavenging activity (IC50 = 0.15-1.04 mg/mL). Anthocyanin and chlorophyll in each pigmented rice type were detected by spectrophotometer. Garaedduk samples were prepared with non-waxy rice, salt, 24% water, and/or 15% indigenous pigmented rice(red, green and black, w/w of total swelling non-waxy rice) and adapted with or without mechanically impacting technology. Hardness, as a main texture profile parameter of Garaedduk was maintained up to 3 days under storage at $20^{\circ}C$. The results suggest that Korean indigenous pigmented rice can be applied for functional Garaedduk adapted with mechanically impacting technology.

DETECTION OF BLACK-PIGMENTED BACTERIA IN INFECTED ROOT CANALS

  • Kwon, Eun-Kyoung;Lee, Su-Jong;Im, Mi-Kyung
    • Proceedings of the KACD Conference
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    • 2001.11a
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    • pp.582.2-582
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    • 2001
  • Black-pigmented bacteria anaerobes have been implicated in the endodontic infections. This group of microorganisms includes Porphyromonas endodontalis, Porphyromonas gingivalis, prevotella intermedia, and Prevotella nigrescens. The organisms display a wide variety of virulence factors that may be pertinent to acute endodontic infections.(omitted)

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Morphological Analysis of Blind-Side Hypermelanosis of the Starry Flounder, Platichthys stellatus during Early Development

  • Kang, Duk-Young;Byun, Soon-Gyu;Myeong, Jeong-In;Kim, Hyo-Chan;Min, Byoung-Hwa
    • Development and Reproduction
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    • v.18 no.2
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    • pp.79-87
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    • 2014
  • In Pleuronectiformes, blind-side malpigmentation (hypermelanosis) is common in cultured flatfishes, and is economically important. To understand the mechanism of blind-side hypermelanosis in flatfishes, we examined when the malpigmentation initially occurred, and studied how the symptoms proceeded during early development of the starry flounder, Platichthys stellatus. To assess quantitative pattern changes of blind-side skin, we observed morphological development of the whole body from 22 (total length [TL] $10.0{\pm}0.2$ mm and body weight [BW] $8.8{\pm}0.57$ mg) to 110 days (TL $23.4{\pm}0.7$ mm, BW $193.6{\pm}23.3$ mg) after hatching (DAH), and also examined the malpigmented area rate of blind-side skin and the malpigmented fish ratios. The experimental animals were reared in fiberglass-reinforced plastic (FRP) tanks in water at a temperature of $18.9{\pm}1.9^{\circ}C$ and salinity of $32.6{\pm}0.6$ psu and were fed with rotifer and Artemia nauplii from 22 to 48 DAH, and with A. nauplii and commercial feed from 49 to 110 DAH. As results, the first staining patch seen by the naked eye was observed around the area between the anus and pelvic fin or caudal edge of the trunk at 80 DAH (TL $20.6{\pm}0.5$ mm, BW $112.5{\pm}8.8$ mg). The pigmented area and the pigmented fish ratios were significantly increased from 80 to 110 DAH. These results indicated that malpigmentation on the blind side of starry flounder was initially observed at about 2 cm in length and 100 mg in weight, and the pigmented domain on the blind-side skin was continually broadened by the differentiation of pigmented cells (melanophores and xanthophores) with growth.

Influences of Temperature and Density on the Feeding Growth, and Blind-side Malpigmentation of Fry Starry Flounder Platichthys stellatus (강도다리(Platichthys stellatus) 치어의 섭식, 성장 및 흑화 발현에 있어 온도와 밀도의 영향)

  • Kang, Duk-Young;Kim, Won-Jin;Kim, Hyo-Chan;Chang, Young Jin
    • Korean Journal of Fisheries and Aquatic Sciences
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    • v.47 no.5
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    • pp.588-596
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    • 2014
  • To examine the influences of water temperature and stocking density on feeding, growth and blind-side hypermelanosis of the starry flounder Platichthys stellatus, we performed an experiment with fry at two densities: 2 and 8 fish/L. The fry had a total length of $3.2{\pm}0.1cm$, body weight $0.6{\pm}0.1g$, and pigmented patches (pigmented ratio $2.6{\pm}0.4%$) on the blind side. Duplicate experiments were conducted in 93.7 L glass tanks for 120 days, from July to November. We determined daily food intake (DFI), food efficiency (FE), growth, survival rate, ratio of hypermelanic fish, and pigmented area rate on the blind side at 60-day intervals. The DFI was less than 50 mg/fish/day, and growth was delayed from July to September (water temperature [WT]> $20^{\circ}C$). After October, when WT < $20^{\circ}C$, the DFI increased significantly and the growth was accelerated, suggesting that the rearing temperature of starry flounder in artificial facilities should be < $20^{\circ}C$. While the FE, and survival did no differ between the two density groups, DFI and growth were significantly higher at 2 fish/L than at 8 fish/L. There was no difference in the pigmented area ratio between the two density groups. Although the hypermelanosis was not correlated with body size, the malpigmentation increased with growth. These results suggest that a high stocking density is not the main cause of blind-side hypermelanosis, although it can accelerate hypermelanosis in the starry flounder.

Study on the Microbial Degradation of Nicotine (1) -Isolation and Identification of Nicotinophiles (미생물에 의한 니코틴 분해 연구(1) -니코틴 분해세균의 분리 및 동정)

  • 강은희;윤경하
    • Journal of the Korean Society of Tobacco Science
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    • v.2 no.1
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    • pp.17-27
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    • 1980
  • From 143 sources of collected samples, the distribution of nicotinophiles were investigated and the biological characteristics as well as the rate of nicotine degradation were determined for the selected 34 strains which could grow successfully in the nicotine media, and one of the most effective strains was chosen and identified at the species level. Nicotinophils were distributed abundantly in the soils rich with organic materials, tobacco seed and root. The selected 34 strains were classified into 7 genus and identified with 4 strains of Arthrobacter, 11 strains of non-pigmented Pseudomonas, 2 strains of pigmented Pseudomonas, 6 strains of Alkaligenes, 5 strains Chromobacter 2 strains of Listeria and 4 strains of Achromobacter. Pseeudomonas and Alkaligenes were better than other genus in the rate of nicotine degradation and tobacco seed and root were also good sources for the isolation of effective nicotinophiles. Amnog 34 strains, strain NCT 27 which exhibited 97.l% of nicotine degradation rate was the best one for nicotine degradation and was indentified with Pseudomonas putida.

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Pigmented Villonodular Synovitis of the Shoulder Associated with Rotator Cuff Tear - A Case Report - (회개근 개 파열과 동반된 색소 융모 결절성 활액막염 - 증례 보고 -)

  • Ha, Sung-Sik;Hong, Ki-Do;Sim, Jae-Chun;Kim, Tae-Ho;Cho, Hye-Jae;Kim, Jong-Hyun
    • Clinics in Shoulder and Elbow
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    • v.13 no.2
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    • pp.275-279
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    • 2010
  • Purpose: Here we report a case of pigmented villonodular synovitis of the shoulder associated with a rotator cuff tear. Materials and Methods: A 52 year-old female who had suffered from pigmented villonodular synovitis of the shoulder associated with a rotator cuff tear was treated with arthroscopic synovectomy and subacromial decompression. Results: Pain was reduced and the patient achieved a good functional outcome after surgery. Conclusion: The current authors report a case of pigmented villonodular synovitis of the shoulder associated with rotator cuff tear and a review of literature.