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HOME > J. Microbiol > Volume 50(3); 2012 > Article
Research Support, Non-U.S. Gov't
Zygomycota Associated with Traditional Meju, a Fermented Soybean Starting Material for Soy Sauce and Soybean Paste
Seung-Beom Hong 1, Dae-Ho Kim 1, Mina Lee 1, Seong-Yeol Baek 2, Soon-wo Kwon 1, Jos Houbraken 3, Robert A. Samson 3
Journal of Microbiology 2012;50(3):386-393.
DOI: https://doi.org/10.1007/s12275-012-1437-6
Published online: June 30, 2012
1Korean Agricultural Culture Collection, National Academy of Agricultural Science, RDA, Suwon 441-707, Republic of Korea, 2Fermentation and Food Processing Division, National Academy of Agricultural Science, RDA, Suwon 441-707, Republic of Korea, 3CBS-KNAW Fungal Biodiversity Centre, 3508AD Utrecht, The Netherlands
Corresponding author:  Seung-Beom Hong , Tel: +82-31-299-1866, 
Received: 31 August 2011   • Accepted: 7 November 2011
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Abstract

Various zygomycota species were detected during a study of the mycobiota of meju, a brick of dried fermented soybeans, used in Korean cuisine. Two hundred and sixty-eight strains were isolated from 98 finished meju products collected in various regions of Korea from 2009 to 2011, and 96 strains were isolated from in-process meju on various farms from 2010 to 2011. The isolated zygomycota were identified using phenotypic characteristics combined with DNA sequences of the internal transcribed spacer regions of ribosomal DNA and the D1/D2 nuclear ribosomal large subunit. Of 364 zygomycota strains, 108 were identified as Mucor circinelloides, 96 as M. racemosus, 60 as Lichtheimia ramosa, 22 as Rhizopus stolonifer, 16 as Lichtheimia corymbifera, and the other 62 strains comprised 10 other species. The psychrotrophic species, Mucor circinelloides and M. racemosus were predominantly present during low temperature fermentation (LTF) and the thermotolerant species Lichtheimia ramosa and Rhizomucor species were predominant during high temperature fermentation (HTF). The results suggest that temperature has a large influence on the zygomycota composition during the fermentation process of meju.

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    Zygomycota Associated with Traditional Meju, a Fermented Soybean Starting Material for Soy Sauce and Soybean Paste
    J. Microbiol. 2012;50(3):386-393.   Published online June 30, 2012
    DOI: https://doi.org/10.1007/s12275-012-1437-6
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