Treatment of refrigerated milk with 20 to 30 mM CO2 was evaluated as a method for extending storage-life by inhibiting growth of psychrotrophic bacteria. Generation times for each of five psychrotrophic pseudomonads were significantly longer when grown at 7C in sterile milk treated with CO2 than when the same bacteria were grown in ungassed sterile milk.
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Roberts et al. (1988) studied this question.
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