Hydrogen peroxide production by Lactobacillus delbruckii ssp. Lactis at refrigeration temperatures.

摘要

Scope and methodology of study. The primary purpose of this study was to identify the enzyme system(s) involved in hydrogen peroxide production by Lactobacillus delbruckii ssp. lactis I at refrigeration temperature as well as the factors influencing the activity of such a system. Because hydrogen peroxide producing lactic acid bacteria can inhibit the growth of psychrotrophic organisms and pathogens at refrigeration temperatures, they can be used in the preservation of foods as a means of controlling undesirable bacteria. Hydrogen peroxide production by L. delbruckii ssp. lactis I was measured under refrigeration temperatures by a spectrophotometric method.;Findings and conclusions. Cell growth of L. delbruckii ssp. lactis I in MRS broth was significantly