• Title/Summary/Keyword: Biological Engineering

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Effect of Fermented Small Soybean Powder Mixed with Mulberry Leaf on Metabolic Improvement and Hexokinase Activity in Streptozotocin-induced Diabetic Rats

  • Kim, Sun-Mi;Han, Jin-Chul;Park, Hum-Dai;Ko, Ki-Sung;Lee, Dae-Hoon;Kim, Sung-Min;Kwon, Dong-Yeul;Kim, Jin-Sook;Kim, Ok-Hee;Hwang, Jin-Bong;Gung, Bae-Nahm;Choo, Young-Kug
    • Nutritional Sciences
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    • v.9 no.2
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    • pp.97-105
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    • 2006
  • Beans are well known to be high-protein diets. Bean seeds contain arginine, lysine, or glycine-rich proteins which are effective to maintain lower glucose levels. In this study, the synergistic effect of fermented small soybean (Chounggukjang) and mulberry leaf on metabolism and hexokinase activity was investigated in streptozotocin (STZ)-induced diabetic rats. We divided 8 groups as follows: non-diabetic rat group fed with only water diet (NC: control), and STZ-induced diabetic rat groups fed with water (DC), fermented Rhynchosia Nulubilis (Bbc), fermented Glycine max Merr (Ybc), Bbc and YBc (BYbc), mulberry leaf and Bbc (MBbc), mulberry leaf and Ybc (MYbc), or the mulberry leaf, Bbc, and Ybc (MBYbc). Diabetes mellitus was induced in rats by subcutaneous STZ administration (70 mg/kg of body weight). All diet groups were fed with Chounggukjang in a powder form. Three ml of Chounggukjang solution (0.75 mg per gram of body weight) dissolved in distilled water was orally administered to all rat groups after STZ administration except for NC rat group. In groups fed with fermented soybeans, the body weight (increased), food efficiency ratio (FER) (increased), glucose level (decreased) and hexokinase (HK) activity (increased) significantly differed to NC. Among them, particularly in the groups fed with both fermented soybeans and mulberry leaf, kidney weight significantly decreased, whereas HK activity significantly increased compared to DC. These results suggest that Chounggukjang of both fermented soybeans and mulberry leaf is potentially used as an effective functional food to prevent diabetes complications.

Efficent Synthetic Method of Obtaining Oligosaccharide Units and Derivatives Utilizing Endoglycosidases

  • Murata, Takeomi;Usui, Taichi
    • Biotechnology and Bioprocess Engineering:BBE
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    • v.7 no.5
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    • pp.263-267
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    • 2002
  • Our purpose is to develop an efficient synthetic method of obtaining oligosaccharide unit in sufficient amounts to study functions of glycans. Many exoglycosidases have been used as tools for the oligosaccharide synthesis. In contrast, a limited number of reports are available on the utilization of endoglycosidases. We describe herewith the efficient synthetic method of useful oligosaccharides and derivatives as biomaterials utilizing lysozyme, cellulase, and lacto-N-biosidase-mediated transglycosyltions.

Phenolic Compounds Content and Antioxidant Activity of Rumex crispus Fractions

  • Lee, Kyoung-Min;Jeong, Gwi-Taek;Park, Don-Hee
    • 한국생물공학회:학술대회논문집
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    • 2005.04a
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    • pp.264-267
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    • 2005
  • The purpose of this study was to investigate the ultra sonic extraction method of phenolic compounds and antioxidant activity from Rumex crispus. Rumex crispus was fractionated with hexane, ethyl acetate, butanol and water. The amount of phenol compounds and antioxidant activity was presented higher content in ethyl acetate fraction then others.

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Antimicrobial Activity of Rumex crispus Fractions

  • Lee, Kyoung-Min;Jeong, Gwi-Taek;Park, Don-Hee
    • 한국생물공학회:학술대회논문집
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    • 2005.04a
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    • pp.268-270
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    • 2005
  • This study was carried out to investigate the antimicrobial activity of Rumex crispus development of antibiotics derived from natural products. To confirm antimicrobial activity, paper disc method and growth inhibition in liquid culture were applied. Antimicrobial activity was observed in Saccharomyces cerevisiae, Vibrio vulificus, Escherichia coli, Bacillus cereus, Staphylococcus aureus, and Cαndida bombicola.

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First Report of Snapping Shrimp Synalpheus neomeris (Decapoda: Caridea: Alpheidae) from Korea (한국미기록 큰발톱세이마뿔딱총새우(십각목: 생이절: 딱총새우과)의 보고)

  • Hyeyoung Koo;Won Kim
    • Animal Systematics, Evolution and Diversity
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    • v.19 no.2
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    • pp.245-250
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    • 2003
  • As a result of taxonomic study on shrimps collected from Korean waters, one species of the snapping shrimp turned out to be new to Korean fauna. Synalpheus neomeris is redescribed and reported for the first time from Korea.

Complex Dynamical Networks: An Overview

  • Chen, Guanrong
    • 제어로봇시스템학회:학술대회논문집
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    • 2002.10a
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    • pp.94.5-94
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    • 2002
  • The current study of complex dynamical networks is pervading all kinds of sciences today, ranging from physical to biological, even to social sciences. its impact on modern engineering and technology is prominent and will be far-reaching. Typical complex dynamical networks include the World Wide Web, the Internet, various wireless communication networks, meta-bolic networks, biological neural networks, social connection networks, scientific cooperation and citation networks, and so on. Research on fundamental properties and dynamical features of such complex networks have become overwhelm ing. This talk will provide a brief overview of some basic concepts about com plex dynamical netwo...

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