Add time:09/24/2019         Source:sciencedirect.com

Five species of meat-borne, coagulase-negative staphylococci were screened for their in vitro production of 3-Methyl-1-butanol (cas 123-51-3). The highest production level was encountered for Staphylococcus sciuri αSG2, despite its poor growth. With respect to Staphylococcus species that are generally applied in sausage starter cultures, production of 3-methyl-1-butanol was higher with Staphylococcus xylosus 3PA6 than with Staphylococcus carnosus 833. Mathematical modelling was used to link the kinetics of 3-methyl-1-butanol production by S. xylosus 3PA6 and S. carnosus 833 in meat simulation medium to bacterial growth and environmental factors, in casu temperature and pH. The specific production rate of 3-methyl-1-butanol was about ten times higher for S. xylosus 3PA6 than for S. carnosus 833, indicating a higher production rate per amount of biomass. This explains the higher concentrations of 3-methyl-1-butanol in the medium with S. xylosus 3PA6, despite its poorer growth.

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