• Title/Summary/Keyword: Biological application

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Meat Quality and Volatile Flavor Traits of Duroc, Berkshire and Yorksire Breeds

  • Dashmaa, Dashdorj;Cho, Byung-Wook;Odkhuu, Ganbat;Park, Kyoung-Mi;Do, Kyoung-Tag;Lee, Ki-Hwan;Seo, Kang-Seok;Choi, Jae-Gwan;Lee, Moon-Jun;Cho, In-Kyung;Ryu, Kyeong-Seon;Jeong, Da-Woon;Hwang, In-Ho
    • Food Science of Animal Resources
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    • v.31 no.6
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    • pp.807-816
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    • 2011
  • The present study evaluated the difference in objective and subjective meat quality properties among the pure-breed boars of Duroc, Berkshire and Yorkshire. Ten longissimus lumborum (LD) muscles were collected from each breed after 24 h slaughtering. The breed type showed a significant effect on intramuscular fat content, moisture (p<0.01), pH, sarcoplasmic protein solubility and color (p<0.05), whereas cooking loss and Warner Blazer shear force (WBsf) did not differ among the breeds. The Yorkshire breed showed significant (p<0.05) lower sarcoplasmic protein solubility, pH and CIE $a^*$ value when compared with other breeds. The sensory panels identified Duroc as having greater overall acceptability and higher rating values than other breeds. The oleic acid content was significantly lower in the Berkshire (29.85 %) than in the Duroc (40.19 %) and Yorkshire breeds (38.18 %, p<0.05). The Yorkshire breed showed the most desirable ratio of polyunsaturated and saturated fatty acids (0.31) than the Berkshire (0.16) and Duroc breeds (0.15, p<0.05). 40 volatile compounds have been identified and quantified, while aldehydes were the most abundant among flavor substances. Aldehydes were negatively correlated with oleic acid content (p<0.05). Current data indicated that each breed had their own merits and deficiencies in terms of meat qualityThe Yorkshire breed showed a greater number of weak points. Furthermore, this study indicated that individual fat-driven flavor components were greatly influenced by fatty acid composition. The polyunsaturated fatty acids did not show any negative effects on meat flavor if cooked meats were consumed soon after cooking.

Poisonous mushrooms as a resource of biomedical application

  • Katsuhiro Konno;Kim, iko-Hashimoto;Haruhisa Shirahama
    • Proceedings of the Plant Resources Society of Korea Conference
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    • 2003.10b
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    • pp.1-1
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    • 2003
  • Poisonous mushrooms have attracted much attention of scientists because of the unique chemical structures and the remarkable biological properties of their toxic components. A wide range of compounds has been characterized as toxic principles, and some of them have widened the horizons of chemical and biological research. Therefore, poisonous mushrooms can serve for a resource of biomedical application. We will describe the recent progress of such aspect of poisonous mushrooms.

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Poisonous mushrooms as a resource of biomedical application

  • Katsuhiro Konno;Kim, iko-Hashimoto;Haruhisa Shirahama
    • Proceedings of the Plant Resources Society of Korea Conference
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    • 2003.10a
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    • pp.1-8
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    • 2003
  • Poisonous mushrooms have attracted much attention of scientists because of the unique chemical structures and the remarkable biological properties of their toxic components. A wide range of compounds has been characterized as toxic principles, and some of them have widened the horizons of chemical and biological research. Therefore, poisonous mushrooms can serve for a resource of biomedical application. We will describe the recent progress of such aspect of poisonous mushrooms.

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A Study on the Biological Remediation Technology for Oil Contaminated Sites (유류로 오염된 토양의 생물학적 처리기법에 관한 연구)

  • Cho Jai-Rip
    • Proceedings of the Korean Society for Quality Management Conference
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    • 2004.04a
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    • pp.307-312
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    • 2004
  • Contamination of industrial sites has happened by a variety compounds. Petroleum hydrocarbons, which are readily biodegradable, are reported principle contaminats in most industrial sites. Therefore, the use of biological processes will be a promising technology for remediation of industrial sites. This paper addresses the possible use of biological processes in remediation of contaminated industrial sites and discusses the background and main streams of the process. The paper also characterizes representative biological systems developed for application.

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Biological Control of Powdery Mildew by Antibiotic-producing Microorganisms Antagonistic to Erysiphe graminis

  • Lee, Yong-Se;Wolf, G.
    • Journal of Microbiology and Biotechnology
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    • v.5 no.6
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    • pp.341-345
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    • 1995
  • Seventy four microorganisms, which have antagonistic activity against to Fusarium culmorum, were tested for their inhibitory effect on colony development of obligate biotroph Erysiphe graminis f. sp. hordei Marchal, the causal agent of powdery mildew on barley plants. Of these, 13 actinomycetes isolates were shown to reduce the colony development of mildew completely by application of their 10% cell-free culture filtrates on barley leaves. An Isolate, A252, was the most powerful antagonist and its antifungal activity was further assessed. The colony development of mildew was significantly reduced by application of the 1% cell-free culture filtrate of isolate A252. In comparison to the control, the protective and curative application of 10% cell-free culture filtrate from A252 showed 88.5% and 96.1% reduction of colony numbers respectively. By the protective application, 68.3% of the inhibition was observed after 9 days of treatment, thus showed prolonged inhibitory effect. In vitro test, complete inhibition of the mycelial growth of Microdochium nivale was achieved by the treatment of 1% A252 culture filtrate and 80.2% of inhibition was observed by the 0.1% treatment.

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Bacillus subtilis Spore Surface Display Technology: A Review of Its Development and Applications

  • Zhang, Guoyan;An, Yingfeng;Zabed, Hossain M.;Guo, Qi;Yang, Miaomiao;Yuan, Jiao;Li, Wen;Sun, Wenjin;Qi, Xianghui
    • Journal of Microbiology and Biotechnology
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    • v.29 no.2
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    • pp.179-190
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    • 2019
  • Bacillus subtilis spore surface display (BSSD) technology is considered to be one of the most promising approaches for expressing heterologous proteins with high activity and stability. Currently, this technology is used for various purposes, such as the production of enzymes, oral vaccines, drugs and multimeric proteins, and the control of environmental pollution. This paper presents an overview of the latest developments in BSSD technology and its application in protein engineering. Finally, the major limitations of this technology and future directions for its research are discussed.