• Title/Summary/Keyword: Ju-bak

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Quality Characteristics and Antioxidant Activity of Jeung-pyun added with Ju-bak Powder (주박 추출물 분말을 첨가한 증편의 항산화 활성 및 품질 특성)

  • Ko, Yeon Suk;Sim, Ki Hyeon
    • Journal of the East Asian Society of Dietary Life
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    • v.24 no.2
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    • pp.190-200
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    • 2014
  • In this study, the antioxidant activity and quality characteristics of the Korean traditional food jeung-pyun made with ju-bak powder were investigated. Jeung-pyun added with 10% ju-bak powder had a total polyphenol content of 54.27%, DPPH free radical scavenging activity of 91.98%, reducing power of 0.51% and SOD-like antioxidant activity of 18.21%. Jeung-pyun added with ju-bak powder had a moisture content of 52.65 to 46.94%, crude fat content of 1.61 to 1.29%, crude protein content of 3.50 to 4.66%, crude ash content of 0.68 to 0.82% and dietary fiber content of 0.12 to 1.46%. Ju-bak powder added with jeung-pyun had a pH level from 4.86 to 4.39. As ju-bak content increased, the pH decreased significantly. Color L value were 78.82 to 68.67. As ju-bak content increased, the Color L value content decreased significantly; a value ranged from -1.89 to 0.69 and b value from 2.99 to 14.25. As ju-bak content increased, the color content significantly increased. As ju-bak content increased, the volume significantly decreased (ranged from 42.50 to 30.00 mL), hardness, gumminess and chewiness significantly increased, and cohesiveness significantly decreased. From SEM, as ju-bak content increased, the pores merged and collapsed, whereas the number of pores decreased and pore size became larger. Sensory evaluation of color, flavor, taste, texture, appearance, cell uniformity and overall acceptability for various levels of ju-bak powder showed that 10% had the highest acceptability. Therefore, 10% ju-bak power added with jeung-pyun has both high antioxidant capacity and sensory acceptability.

Discrimination of Genuines and Misuses of Hu-Bak medicines by Morphological Characters and Random Amplified Polymorphic DNA Analysis (형태특징 및 RAPD분석에 의한 후박(厚朴) 약재의 진위감별)

  • Lee, Mi-Young;Kim, Hong-Jun;Ju, Young-Seung;Ko, Byoung-Seob
    • Korean Journal of Oriental Medicine
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    • v.9 no.2
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    • pp.83-94
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    • 2003
  • For identification of genuine and misuse samples of Hu-Bak medicines, an morphological characters, and RAPD (random amplified polymorphic DNA) were performed. In this study, three samples were collected, of which two were genuine and one was misuse sample. Genuine samples of 'Hu-Bak' were Magnolia obovata Thunberg and Magnolia officinalis Rehder et Wilson. Misuse samples was Machilus thunbergii S. et Z. In the morphological characters, M. obovata Thunberg and M. officinalis Rehder et Wilson were similar, but M. thunbergii S. et Z. was different with cortex, cambium, and fibrous layer. The result of RAPD analysis, seven primers can distinguish between genuines and counterfeit samples of Hu-Bak medicines.

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합성보존제(benzalkoniumchloride)와 천연보존제(키토산)의 세포독성 및 항균활성에 관한 연구

  • Park, Hyeon-Ju;Lee, Gi-Yeong
    • 한국생물공학회:학술대회논문집
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    • 2001.11a
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    • pp.261-264
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    • 2001
  • Cytotoxicity and antibacterial activity of preservatives were examined. Fibroblast cell L929 was used for cytotoxicity experiment and Pseudomonas aeruginosa A TCC27853, Staphylococcus aureus ATCC25923. Trichoderma reesei ATCC6967 were used for antibacteria and antifungi. Benzalkoniumchloride(BAK) as synthetic preservative and chitosan as natural preservative were used. Minimum inhibitary concentration (MIC) of BAK was 0.1 % for P. aeruginsa and 0.001% for S. aureus and 0.1 % for T reesei MIC of chitosan was 2% for P. aeruginosa and 1 % for S. aureus.

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Academic Characteristic and Understanding of Seo Kye Bak Se-Dang's Sa Byeon Rok The Doctrine of the Mean (서계(西溪) 박세당(朴世堂)의 『사변록(思辨錄) 중용(中庸)』 이해(理解)와 학문적(學問的) 특징(特徵))

  • Shin, Chang Ho
    • (The)Study of the Eastern Classic
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    • no.55
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    • pp.59-84
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    • 2014
  • This research is an attempt to newly interpret his academic evaluation and understand Seo Kye Bak Se-Dang's Sa Byeun Rok The Doctrine of the Mean. In academic world, his academic Characteristic was considered as anti-Neo-confucianism, out of Jung Ju Hak, out of Seong Ri Hak, and Sil Hak. His understanding of The Doctrine of the Mean was pretty critical, because he had unique academic characteristic to interpret Chinese classics rather than anti-Neo-confucianism, out of Jung Ju Hak, out of Seong Ri Hak, and Sil Hak. Especially, he took practical study with six Chinese classics as the central figure and it was a creative thing with philosophical method. He tried to find out original meaning which was essential thought of Confucianism, and pointed out disharmony for consistency about meaning of The Doctrine of the Mean when Jung Ja and Ju Ja interpreted The Doctrine of the Mean. It appeared as an effort of trying agreement between name and its duty, and role and function in things and act. In addition, he thought The Doctrine of the Mean as trying to follow nature, and it was the way of people to practice in bright side of mind. It is different from Ju Ja's thought which explains principle about people and things, and it has strong reality which is foundation of practice and allows dynamic energy of human life. Therefore, practice style of The Doctrine of the Mean develops filial duty as center of mass and appears manifestation of human's independence through how people pracice it. To sum up, he traced The Doctrine of the Mean as reality, practice, and physical science rather than ideal, theoretical, and metaphysical philosophy. It developed the spirit of study as understanding world as the center of human, thinking over the way of people, and studying the essence of Confucianism with practice of thought.

A Note on Nitschkia confertula

  • Lee, Seon-Ju;Bak, Won-Chul;Kim, Kyung-Hee
    • Mycobiology
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    • v.30 no.3
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    • pp.180-182
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    • 2002
  • A fungus that grew over bed-logs of shiitake(Lentinula edodes) and caused damage was isolated from mushroom-growing farms. The fungus produced extensive mat-like dark subiculum with ascomata in it and was identified as Nitschkia confertula. This is the first report in Korea and morphological characteristics are fully described.