0,05) os teores de TBARS. Os parâmetros microbiológicos avaliados não ultrapassaram os limites permitidos pela legislação. As CMS permaneceram estáveis e em boas condições de utilização, independentemente da inclusão de aditivo, sendo viável sua estocagem a -18 ºC por 180 dias.]]>

ABSTRACT. Changes in smoked bologna sausage manufactured with Nile tilapia (Oreochromis niloticus), and wheat fibers in refrigerated storage (6 ± 2°C) during 30 days were evaluated. Minced fish (MF) obtained from waste (parings from the filleting fish operations) of Nile tilapia (Oreochromis niloticus) was used as raw material. In this experiment, were determined Staphylococcus count, the detection of Salmonella sp. (day 0), psychrotrophic count, total and fecal coliforms at 45°C, the acceptance sensory test (days 0 and 30), water activity, instrumental color, pH and lipid oxidation analysis (Thiobarbituric acid reactive substances -TBARS) days 0, 5, 10, 15, 20, 25 and 30 of storage. Lipid oxidation (TBARS) and water activity provided significant differences among storage days. However it was concluded that the bologna sausage remained stable and with acceptable quality for 30 days of storage may be a new alternative to adding value to fish products, because the researched microorganisms had a low count, changes in pH were not significant and sensory test indicated good acceptance of the product during the 30 days of storage.

-The purpose of this study was to evaluate the physicochemical and microbiological stability of sausages produced from mechanically separated fish meat (MSM) obtained from Nile tilapia filleting residues. Different heat treatments (pasteurization or smoking) and packaging systems (conventional or vacuum) were used. The sausages were characterized for chemical composition, weight loss, water activity, instrumental texture and sensorial analysis. Additionally, microbiological analysis, instrumental color, pH, thiobarbituric acid reactive substances (TBARS) and total volatile base nitrogen (TVB-N) were assessed during storage. No presence of Escherichia coli, Salmonella sp. or coagulase-positive Staphylococcus was detected; however, the psychrotrophic count in pasteurized sausages exceeded the limits allowed for consumption. pH and lipid oxidation speed (TBARS) values were reduced when vacuum packaging was used. Volatile nitrogenous bases remained virtually constant during the storage period, and higher values were observed in smoked products. Pasteurized sausages remain stable for 10 and 15 days in conventional and vacuum packages, respectively, and smoked sausages remain stable for 25 and 45 days in conventional and vacuum packages, respectively.

Rendimento e composição centesimal do tambaqui (Colossoma macropomum) por diferentes cortes e categorias de peso Yield and centesimal composition of tambaqui (Colossoma macropomum) by different processing forms and weight categories

The objective of this study was to evaluate the shelf-life of peeled giant river prawn Macrobrachium rosenbergii stored directly in contact with ice (DCI), and without direct contact with ice (WCI). The prawns from DCI treatment showed an intense leaching of non-protein nitrogen (NPN) and total volatile bases nitrogen (TVB-N), thus suggesting that NPN or TVB-N should not be used as freshness indicators of peeled tails stored directly in contact with ice. Loss of flavor and a quick texture tactile decrease with time occurred in both treatments. The shelf-life of peeled tails prepared from M. rosenbergii was 7 days for DCI and 10 days for WCI.