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Dag T., ŞAHAL G., Bilkay I. S.

Journal of Microbiology, Biotechnology and Food Sciences, vol.13, no.2, 2023 (ESCI) identifier

  • Publication Type: Article / Article
  • Volume: 13 Issue: 2
  • Publication Date: 2023
  • Doi Number: 10.55251/jmbfs.9757
  • Journal Name: Journal of Microbiology, Biotechnology and Food Sciences
  • Journal Indexes: Emerging Sources Citation Index (ESCI), Scopus
  • Keywords: Agro-industrial residues, antimicrobial bio-colorants, F. graminearum, food industry, microbial pigments
  • Hacettepe University Affiliated: Yes


Fusarium sp. produces various bioactive pigments widely used in pharmaceuticals, cosmetics, and the food industry. This study investigated the antimicrobial effect of the pigment produced from the highest pigment-producing Fusarium sp. strain and determined the optimum growth conditions and agro-industrial residues to obtain maximum pigment production. Fusarium equiseti, Fusarium graminearum, and Fusarium poae strains were tested in terms of their pigment production levels. Pigment quantification was assessed by a UV–Visible Spectrophotometer at 500 nm. Antimicrobial tests were determined by Disc Diffusion and Well Diffusion Methods. According to our results, the highest amount of pigment-producing strain was F. graminearum (p<0.001) and malt extract broth (MEB) was the optimum growth media (p<0.001). Extracted F. graminearum pigment was antimicrobial against B. cereus and S. aureus with a zone of inhibition diameters of 10.2 and 14.9 mm respectively. Initial pH levels of 8, 150 rpm rotation speed, 30 ºC temperature, and 9 days of incubation under the light condition in MEB media were determined as the optimum growth conditions for the highest reddish pigment production. Moreover, 10-2 times diluted molasses, Turkish feta cheese whey, and Turkish cheddar cheese whey were found as suitable low-cost growth media for reddish pigment production by F. graminearum. Our findings not only represent a pigment that might be used in the food industry as an antimicrobial bio-colorant but also show the potential use of molasses and whey as low-cost growth media for reddish pigment production by F. graminearum.