Original scientific paper DOI: 10.17508/CJFST.2018.10.2.02
DNA isolation from Aspergillus flavus: Optimal method selection
BOJAN ŠARKANJ1, ZINKA BOŠNJAK2, MAGDALENA PERIĆ2,
TIHOMIR KOVAČ1*, SNJEŽANA DŽIJAN3
1Josip Juraj Strossmayer University of Osijek, Faculty of Food Technology, Franje Kuhača 18, 31000 Osijek, Croatia
2Institute of Public Health for Osijek-Baranja County, Franje Krežme 1, Osijek, Croatia
3Josip Juraj Strossmayer University of Osijek, Faculty of Medicine, Cara Hadrijana 10E, Osijek, Croatia
| ARTICLE INFO | ABSTRACT |
| Article history: Received: November 21, 2017 Accepted: March 14, 2018 |
The methods for fungal genomic DNA isolation for PCR amplification, including commercially available kits, must often be adapted in order to produce sufficient amounts of high-quality DNA from specific fungal species. The aim of this study was to select an optimal method for the isolation of DNA from Aspergillus flavus suitable for PCR reaction. Four different methods were compared according to their efficiency in isolating pure DNA, their price and time consumption. DNA quantification and purity estimation were performed using the NanoDropTM 1000 UV/VIS spectrophotometer and DNA integrity and PCR products were determined by gel-electrophoresis. DNA quantity ranged from 92.77 ± 11.52 to 5477.4 ± 22.03 ng/µL, with A260/280 from 1.14 ± 0.10 to 1.94 ± 0.16, and A260/230 0.37 ± 0.05 to 1.91 ± 0.17. There were also great differences in time consumption per sample, ranging from 1 hr 15 min to 7 hr 5 min. The determined costs per sample were ranging from 0.12 € to 2.29 € per sample. All tested methods were suitable for the isolation of A. flavus genomic DNA and subsequently for PCR reaction. |
| Keywords: fungal genomic DNA isolation, DNA quantification, DNA purity, Aspergillus flavus, PCR |