Three cultures were enriched from cork boiling wastewater using tannic acid as the selective carbon substrate, at 25 C and pH 7.2, 25 C and pH 4.7 and 50 C and pH 4.7. The enrichment culture obtained at neutral pH was composed of five culturable isolates, whereas from each acidic enrichment two bacterial strains were isolated. Mesophilic isolates were Gram negative bacteria belonging to the genera Klebsiella...
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