Title:	Prediction of acid lactic-bacteria growth in turkey ham processed by high hydrostatic pressure.
Authors:	MATHIAS, S. P. ROSENTHAL, A. GASPAR, A. ARAGÃO, G. M. F. SLONGO-MARCUSI, A.
Affiliation:	SIMONE PEREIRA MATHIAS, UFRRJ; AMAURI ROSENTHAL, CTAA; ARLENE GASPAR, UFRJ; G. M. F. ARAGÃO, UFSC; A. SLONGO-MARCUSI, IFECTF.
Date Issued:	2013
Citation:	Brazilian Journal of Microbiology, São Paulo, v. 44, n. 1, p. 23-28, Apr. 2013.
Description:	High hydrostatic pressure (HHP) has been investigated and industrially applied to extend shelf life of meat-based products. Traditional ham packaged under microaerophilic conditions may sometimes present high lactic acid bacteria population during refrigerated storage, which limits shelf life due to development of unpleasant odor and greenish and sticky appearance. This study aimed at evaluating the shelf life of turkey ham pressurized at 400 MPa for 15 min and stored at 4, 8 and 12 °C, in comparison to the non pressurized product. The lactic acid bacteria population up to 107 CFU/g of product was set as the criteria to determine the limiting shelf life According to such parameter the pressurized sample achieved a commercial viability within 75 days when stored at 4 °C while the control lasted only 45 days. Predictive microbiology using Gompertz and Baranyi and Roberts models fitted well both for the pressurized and control samples. The results indicated that the high hydrostatic pressure treatment greatly increased the turkey ham commercial viability in comparison to the usual length, by slowing down the growth of microorganisms in the product.
Keywords:	Alta pressão hidrostática Modelos preditivos Bactérias do ácido láctico Presunto de peru
DOI:	10.1590/S1517-83822013005000014
Type of Material:	Artigo de periódico
Access:	openAccess
Appears in Collections:	Artigo em periódico indexado (CTAA)