Preliminary data on the microbial profile of dry and wet aged bovine meat obtained from different breeds in Sardinia

Autor: Maria Pina Meloni, Francesca Piras, Giuliana Siddi, Rita Sanna, Roberta Lai, Fabrizio Simbula, Daniela Cabras, Maria Maurichi, Giovanna Asara, Enrico Pietro Luigi De Santis, Christian Scarano
Jazyk: English<br />Italian
Rok vydání: 2023
Předmět:
Zdroj: Italian Journal of Food Safety, Vol 12, Iss 2 (2023)
Druh dokumentu: article
ISSN: 2239-7132
DOI: 10.4081/ijfs.2023.11060
Popis: This study aimed to evaluate the influence of dry and wet aging on microbial profile and physicochemical characteristics of bovine loins obtained from four animals of two different breeds, namely two Friesian cull cows and two Sardo-Bruna bovines. During dry and wet aging aerobic colony count, Enterobacteriaceae, mesophilic lactic acid bacteria, Pseudomonas, molds and yeasts, Salmonella enterica, Listeria monocytogenes and Yersinia enterocolitica, pH and water activity (aw) were determined in meat samples collected from the internal part of the loins. Moreover, the microbial profile was determined with sponge samples taken from the surface of the meat cuts. Samples obtained from Friesian cows were analyzed starting from the first day of the aging period and after 7, 14, and 21 days. Samples obtained from the Sardo Bruna bovines were also analyzed after 28 and 35 days. Wet aging allowed better control of Pseudomonas spp. during storage that showed statistically lower levels (P>0.05) in wet-aged meats with respect to dry-aged meats during aging and particularly at the end of the period (P>0.01) in both cattle breeds. At the end of the experiment (21 days), aerobic colony count and Pseudomonas in Fresian cows’ dry-aged meats showed mean levels >8 log, while lactic acid bacteria mean counts >7 log were detected in wet-aged meats of both cattle breeds. In meats submitted to dry aging, pH was significantly higher (P
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