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Vol.5 , No. 2, Publication Date: Jun. 1, 2018, Page: 25-28
 sequence and revealed eight species from two genera <i>Aspergillus</i> and <i>Penicillium</i>. The results also showed that aflatoxin was not detected in all soybean paste samples, however, one isolated strain of the <i>A. oryzae</i>/<i>flavus</i> group was found to be an aflatoxigenic fungal strain.&picture=http://www.aascit.org/aascit/decorators/img/journal/919.jpg)
| [1] | Doan Van Thuoc, Department of Biotechnology and Microbiology, Hanoi National University of Education, Hanoi, Vietnam. |
| [2] | Dang Thi Xim, Department of Biotechnology and Microbiology, Hanoi National University of Education, Hanoi, Vietnam. |
| [3] | Le Thi Viet Ha, Ngo Quyen High School, Hai Phong, Vietnam. |
| [4] | Lai Duy Hung, Tran Phu High School, Hai Phong, Vietnam. |
| [5] | Dang Huong Tra, Tran Phu High School, Hai Phong, Vietnam. |
Soybean paste is a fermented food produced in many countries around the world by various ways. In Vietnam, Aspergillus oryzae was used as a fermentation agent in soybean paste process. This study was carried out to investigate fungi and aflatoxin contaminations in soybean paste samples. Several fungal strains were isolated. Among them, eleven selected fungal isolates were identified by phenotypic characteristics and molecular analysis using the ITS (internal transcribed spacer) sequence and revealed eight species from two genera Aspergillus and Penicillium. The results also showed that aflatoxin was not detected in all soybean paste samples, however, one isolated strain of the A. oryzae/flavus group was found to be an aflatoxigenic fungal strain.
Keywords
Aflatoxin, Aspergillus, Fungi, Soybean Paste
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