dc.creator | Freitas, Rosângela de | |
dc.creator | Luiz, Lívia M. Pinheiro | |
dc.creator | Alves, Maura Pinheiro | |
dc.creator | Valence-Bertel, Florence | |
dc.creator | Nero, Luís Augusto | |
dc.creator | Carvalho, Antônio Fernandes de | |
dc.date | 2018-12-13T13:19:21Z | |
dc.date | 2018-12-13T13:19:21Z | |
dc.date | 2013-08 | |
dc.date.accessioned | 2023-09-27T21:28:18Z | |
dc.date.available | 2023-09-27T21:28:18Z | |
dc.identifier | 1469-7629 | |
dc.identifier | https://www.ncbi.nlm.nih.gov/pubmed/23611596 | |
dc.identifier | http://www.locus.ufv.br/handle/123456789/22779 | |
dc.identifier.uri | https://repositorioslatinoamericanos.uchile.cl/handle/2250/8961177 | |
dc.description | Propionibacteria derived from dairy products are relevant starter cultures for the production of Swiss and Emmental-type cheeses, and the monitoring of which is mandatory for proper quality control. This study aimed to evaluate an alternative procedure to enumerate propionibacteria, in order to develop a reliable and practical methodology to be employed by dairy industries. 2,3,5-triphenyltetrazolium chloride (TTC) inhibitory activity was tested against five reference strains (CIRM 09, 38, 39, 40 and 116); TTC at 0·0025% (w/v) was not inhibitory, with the exception of one strain (CIRM 116). Subsequently, the four TTC-resistant strains, three commercial starter cultures (PS-1, PB-I, and CHOO) and twelve Emmental-type cheese samples were subjected to propionibacteria enumeration using Lithium Glycerol (LG) agar, and Petrifilm™ Aerobic Count (AC) plates added to LG broth (anaerobic incubation at 30 °C for 7 d). Petrifilm™ AC added to LG broth presented high counts than LG agar (P<0·05) for only two reference strains (CIRM 39, and 40) and for all commercial starter cultures. Cheese sample counts obtained by both procedures did not show significant differences (P<0·05). Significant correlation indexes were observed between the counts recorded by both methods (P<0·05). These results demonstrate the reliability of Petrifilm™ AC plates added to LG broth in enumerating select Propionibacterium spp., despite some limitations observed for specific commercial starter cultures. | |
dc.format | pdf | |
dc.format | application/pdf | |
dc.language | eng | |
dc.publisher | Journal of Dairy Research | |
dc.relation | Volume 80, Issue 3, Pages 270– 275, August 2013 | |
dc.rights | Open Access | |
dc.subject | Propionic bacteria | |
dc.subject | Petrifilm™ AC | |
dc.subject | Cheese | |
dc.subject | Emmental | |
dc.title | Selective enumeration of propionibacteria in Emmental-type cheese using PetrifilmTM Aerobic count plates added to lithium glycerol broth | |
dc.type | Artigo | |