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Broad-spectrum In vitro antimicrobial activities of Streptomyces sp. strain BCNU 1001

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Abstract

Streptomyces sp. strain BCNU 1001 was isolated from forest soil samples. Cultural, morphological, and physiological characteristics as well as 16S rDNA analysis revealed that the isolate, BCNU 1001, belonged to the genus Streptomyces. The antimicrobial activity of the ethyl acetate extract was confirmed using the broth microdilution technique. The minimum inhibitory concentration (MIC) of the BCNU 1001 ethyl acetate extract was 0.25 mg/mL for Bacillus subtilis, Escherichia coli, and Pseudomonas aeruginosa, and 0.125 mg/mL for Micrococcus luteus, Staphylococcus aureus, and Pseudomonas fluorescens. The MIC of the BCNU 1001 ethyl acetate extract for Aspergillus niger, Candida albicans, and Saccharomyces cerevisiae was 0.5, 0.125, and 0.25 mg/mL, respectively. BCNU 1001 was also active against dermatophytic fungi such as Trichophyton mentagrophytes and T. rubrum. Furthermore, BCNU 1001 was also found to be effective against Methicillin-resistant Staphylococcus aureus (MRSA), and its ethyl acetate extract showed MIC = 0.5 mg/mL against MRSA. The most abundant antimicrobial compound was identified as a 2-hydroxybenzyl alcohol through analysis utilizing a nuclear magnetic resonance spectroscopy. This compound was seen to be very effective against some kinds of bacteria and fungi.

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Authors and Affiliations

  1. Interdisplinary Program for Biotechnology and Department of Biology, Changwon National University, Changwon, 641-773, Korea

    Hye Jung Choi & Woo Hong Joo

  2. Department of Microbiology, Changwon National University, Changwon, 641-773, Korea

    Dong Wan Kim

  3. Department of Horticultural Bioscience, Pusan National University, Miryang, 627-706, Korea

    Young Whan Choi

  4. Department of Food Science and Technology, Pusan National University, Miryang, 627-706, Korea

    Young Geun Lee

  5. Department of Chemistry, Changwon National University, Changwon, 641-773, Korea

    Yong-Ill Lee

  6. Department of Biotechnology, Dong-A University, Busan, 604-714, Korea

    Yong Kee Jeong

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  1. Hye Jung Choi
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  2. Dong Wan Kim
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  3. Young Whan Choi
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  4. Young Geun Lee
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  5. Yong-Ill Lee
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  6. Yong Kee Jeong
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  7. Woo Hong Joo
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Correspondence to Woo Hong Joo.

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Choi, H.J., Kim, D.W., Choi, Y.W. et al. Broad-spectrum In vitro antimicrobial activities of Streptomyces sp. strain BCNU 1001. Biotechnol Bioproc E 17, 576–583 (2012). https://doi.org/10.1007/s12257-011-0151-2

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  • DOI: https://doi.org/10.1007/s12257-011-0151-2

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