کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4370006 1616773 2006 12 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Enterocin A production by Enterococcus faecium FAIR-E 406 is characterised by a temperature- and pH-dependent switch-off mechanism when growth is limited due to nutrient depletion
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم کشاورزی و بیولوژیک دانش تغذیه
پیش نمایش صفحه اول مقاله
Enterocin A production by Enterococcus faecium FAIR-E 406 is characterised by a temperature- and pH-dependent switch-off mechanism when growth is limited due to nutrient depletion
چکیده انگلیسی
The biokinetics of cell growth and bacteriocin production of Enterococcus faecium FAIR-E 406 was studied as a function of temperature (20-45 °C) and pH (5.5-8.5) using de Man-Rogosa-Sharpe medium. Growth of E. faecium FAIR-E 406 was characterized by three successive growth phases and was modelled with the mechanistic nutrient depletion model. Bacteriocin production showed primary metabolite kinetics but was limited to the early growth phase. The critical biomass for switching off bacteriocin production was dependent on medium pH and incubation temperature, and was inversely correlated with the specific bacteriocin production. Doubling the concentration of the nitrogen source as well as a step-wise pH increase shifted the bacteriocin production towards a higher switch-off cell density.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Food Microbiology - Volume 107, Issue 2, 15 March 2006, Pages 159-170
نویسندگان
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