Combination effect of sodium lactate and irradiation on color, lactic acid bacteria, lipid oxidation and residual nitrite in Chinese sausages during storage at 25°C
2004
Kuo, J.C.C. | Chen, H.L.
Chinese sausages, with the addition of 0 or 2% sodium lactate, were vacuum-packaged and stored overnight at 4°C. Refrigerated sausages were gamma-irradiated at 0, 3 or 5 kGy absorbed dose. Meat samples were stored at 25°C for up to 30 days. Color, lactic acid bacteria, pH, lipid oxidation and residual nitrite were determined during storage. Irradiated samples were reduced in redness as a result of irradiation and storage time. Irradiation at 5 kGy alone or in combination with 2% sodium lactate and irradiation at 3 kGy could completely inhibit lactic acid bacterial growth. Thiobarbituric acid reactive substances (TBARS) values decreased as the pH values of samples increased. Sodium lactate decreased TBARS values of all samples and protected against a decrease of residual nitrite during storage. Irradiation reduced residual nitrite in Chinese sausage, and residual nitrite decreased with increased time.
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