title: Rapid quantifiable assessment of nutritional parameters influencing pediocin production by Pediococcus acidilactici NRRL B5627.
abstract: A direct plate bioassay procedure was applied for rapid and quantifiable assessment of the influence of various nutritional parameters on pediocin production by Pediococcus acidilactici NRRL B5627. Solid-state cultivation of the microorganism was done on MRS-based media over 3-and 6-hours incubation periods. Nutritional parameters assessed included the carbon source (glucose, sucrose, fructose, galactose, glycerol), and various salts (NH(4)PO(4), CaCl(2), KH(2)PO(4), MnSO(4).H(2)O). Glucose was found to be the optimal carbon source while glycerol exhibited the most suppressive effect. Using glucose as the carbon source, addition of various salts, in amounts used in liquid media commonly applied in the cultivation of the pediococci, was assessed with respect to bacteriocin production on a per cell basis. Experimental data obtained showed that several nutritional parameters repress pediocin production by P. acidilactici, while the direct plate assay proved to be a good pilot assay prior to conducting more intensive kinetic analysis in liquid cultivation.
authors.affiliation: Department of Hygiene and Technology of Food of Animal Origin, School of Veterinary Medicine, Aristotle University of Thessaloniki, Thessaloniki 54006, Greece.
authors.forename: Sofia
authors.initials: S
authors.lastname: Anastasiadou
authors.forename: Maria
authors.initials: M
authors.lastname: Papagianni
authors.forename: Ioannis
authors.initials: I
authors.lastname: Ambrosiadis
authors.forename: Pavlos
authors.initials: P
authors.lastname: Koidis
mesh_terms: D001430:Bacteriocins / Q000096:biosynthesis*; D001681:Biological Assay; D003470:Culture Media; D007700:Kinetics; D010376:Pediococcus / Q000378:metabolism*
chemical_list: D001430:Bacteriocins; D003470:Culture Media