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. 2017 Apr 7;9(4):130. doi: 10.3390/toxins9040130

Table 1.

Strategies and methodologies in the enrichment and isolation of mycotoxin biotransforming microorganisms. DGGE, denaturing gradient gel electrophoresis; T-RFLP, terminal restriction fragment length polymorphism.

Mycotoxin Enrichment Isolation
Medium Strategy/Methodology Medium Strategy/Methodology Biotransforming Strains Reference
DON Corn meal broth Soil samples enriched from the corn contaminated by the DON-producing fungi Corn meal agar Single colonies screening; extended incubation time for slow-growth strains Devosia mutans 17-2-E-8 [12]
Anaerobic incubation medium with 10% chicken cecal digesta extract In vivo enrichment with moldy wheat; antibiotics treatment; guiding the enrichment by PCR-DGGE L10 agar Single colonies screening Bacillus sp. LS-100 [43]
M10 medium + DON (100 µg/mL) Treatment by antibiotics and hemin M1 medium Single colonies screening Eubacterium sp. BBSH 797 [55,56]
Mineral salts with peptone medium + DON (50 µg/mL) Antibiotics and heat treatment; guiding the enrichment by T-RFLP Mineral salts with peptone agar Single colonies screening; extended incubation time for slow-growth strains Microbial consortium with at least 6 bacterial genera [14]
Mineral medium + DON (100 µg/mL) DON as a sole carbon source 1/100 nutrient agar Single colonies screening Nocardioides sp. WSN05-2 [13]
Mineral salt medium + DON (100 µg/mL) In situ plant enrichment in contaminated wheat head by spraying DON MRDG medium Single colonies screening; using gellan gum rather than agar Marmoricola sp. MIM116 [32]
Mineral medium + DON (100 µg/mL) DON as a sole carbon source Reasoner’s 2A (R2A) agar, 1/100 nutrient agar Single colonies screening 9 Nocardioides spp. and 4 Devosia spp. [15]
BYE medium + DON (200 µg/mL) Repeated sub-culturing in fresh medium with high level of DON (200 µg/mL) 1/10 nutrient agar Single colonies screening E3-39 (belonging to Agrobacterium or Rhizobium) [16]
Inorganic salt culture medium + DON (4 µg/mL) Enrichment with minimal nutrients Czapek’s agar, LB agar Single colonies screening Aspergillus tubingensis NJA-1 [57]
Mineral salts with peptone medium + DON (50 µg/mL) In situ soil enrichment by spraying DON; guiding the enrichment by PCR-DGGE - - Microbial consortium [17]
ZEA Minimal salt medium + ZEA (2 µg/mL) ZEA as a sole carbon source LB agar Single colonies screening Pseudomonas alcaliphila TH-C1, Pseudomonas plecoglossicida TH-L1 [18]
LB broth Selective screening Bacillus strains by heat treatment LB agar Single colonies screening Bacillus subtilis ANSB01G [19]
Minimal salt medium + ZEA (2 µg/mL) ZEA as a sole carbon source LB agar Single colonies screening Pseudomonas otitidis TH-N1 [41]
M1 + ZEA (25 µg/mL) + nystatin (15 µg/mL), M2 + ZEA (500 µg/mL) ZEA as a sole carbon source Nutrient agar Single colonies screening Acinetobacter sp. SM04 [23]
M9 medium + ZEA (50 µg/mL) ZEA as a sole carbon source LB agar Single colonies screening Microbial consortium [24]
AFB1 Coumarin medium (with 1% coumarin) Coumarin, a basic molecular structure of aflatoxins, as a sole carbon source Coumarin medium Single colonies screening; coumarin as a sole carbon source Stenotrophomonas maltophilia 35-3 [46]
Coumarin medium (with 1% coumarin) Coumarin, a basic molecular structure of aflatoxins, as a sole carbon source Coumarin medium Single colonies screening; coumarin as a sole carbon source Pseudomonas aeruginosa N17-1 [25]
- - Modified Hormisch medium (with 0.1% coumarin) Coumarin as a sole carbon source Stenotrophomonas sp. NMO-3 [58]
Nutrient broth Non-selective enrichment Coumarin medium (with 0.1% coumarin) Single colonies screening; coumarin as a sole carbon source; K-B disk diffusion Aspergillus niger ND-1 [34]
Minimal salt/vitamin medium + fluoranthene (10 mg/mL) Fluoranthene as a sole carbon source R2A agar Single colonies screening Mycobacterium fluoranthenivorans sp. nov. [59]
Minimal salt medium + AFB1 (10 µg/mL) AFB1 as a sole carbon source Minimal salt agar + AFB1 (10 µg/mL) Single colonies screening Bacillus sp. TUBF1 [31]
- - Nutrient agar Single colonies screening Bacillus licheniformis CM21, Bacillus subtilis MHS 13 [35]
AFB1, AFM1, AFG1 LB broth Selective screening Bacillus strains by heat treatment LB agar Single colonies screening Bacillus subtilis ANSB060 [45]
PAT Mineral salt medium + increased concentration (300–600 µg/mL) of PAT PAT as a sole carbon source Mineral salt agar + PAT (600 µg/mL) Single colonies screening Byssochlamys nivea FF1-2 [54]
- - YEPD medium + PAT (10 µg/mL) Screening in liquid medium Kodameae ohmeri HYJM34 [60]
CIT Mineral broth + (1–4 µg/mL) of CIT CIT as a sole carbon source Mineral salt agar + CIT (10 µg/mL) Single colonies screening Klebsiella pneumoniae NPUST-B11 [26]
Mineral broth + CIT (1 µg/mL) CIT as a sole carbon source Mineral salt agar + CIT (1–5 µg/mL) Single colonies screening Rhizobium borbori PS45 [27]
- - Nutrient agar Screening strains by disc plate diffusion assay (50 µg/disk of CIT) Moraxella sp. MB1 [50]
FUB1 BYE medium + FUB1 (500 µg/mL) Increasing population of FUB1-transforming microbes; antibiotics treatment Nutrient agar (NA), NA + sucrose, NA + skim milk, PYEI agar, BYE agar Single colonies screening NCB 1492 (belonging to Delftia or Comamonas) [28]
OTA - - YES medium + OTA (2 µg/mL) Screening in liquid medium Aspergillus niger CBS 120.49 [61]
- - Czapek-Dox medium + OTA (40 µg/plate) Screening point-pated colonies by observing the loss of fluorescence Acinetobacter calcoaceticus NRRL B-551 [62]
- - LB agar + OTA (3 µg/mL); medium with isocoumarin as the sole carbon source Screening microbes using isocoumarin as a sole carbon source Bacillus subtilis CW 14 [47]