Color stability and shelf life of sliced bologna made with various nitrite levels and packaged with different films and vacuum levels have been studied. A maximum (686–737 mm Hg) initial vacuum levels combined with fiims of low oxygen permeability (7.0 ml/m 2 /24 hr or less) had higher color scores, greater cured pigment conversion and lower TBA numbers. A lower nitrite concentration (50 ppm) was possible while maintaining product characteristics if good barrier films (less than 7.0 ml oxygen/m 2 /24 hr) and high initial vacuum levels (686–737 mm Hg) were used.
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Lin et al. (1979) studied this question.
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