کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10107328 | 1616785 | 2005 | 12 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Control of Listeria monocytogenes in model sausages by enterocin AS-48
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کلمات کلیدی
موضوعات مرتبط
علوم زیستی و بیوفناوری
علوم کشاورزی و بیولوژیک
دانش تغذیه
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
In this work we describe the control of Listeria monocytogenes CECT 4032 in sausage by adding the enterocin AS-48 producer strains Enterococcus faecalis A-48-32 and Enterococcus faecium S-32-81, and also by adding a semi-purified preparation of the bacteriocin. Addition of preformed AS-48 caused a significant decrease (P<0.01) in the number of viable listeria even at the lowest bacteriocin concentration tested (112 AU/g). At a higher concentration (225 AU/g) listeria were below the detection level (1.99 log units/g) in meat at 3 days of incubation but growth of listeria was observed again after 9 days. For an AS-48 concentration of 450 AU/g, no viable listeria were detected after 6 and 9 days of incubation. When E. faecalis A-48-32 was used as inoculum at approximately 107 cfu/g, listeria counts decreased progressively from start of experiment, being below detection level at day 9. The best results were obtained with E. faecium S-32-81, since listeria were undetectable at 6 days of incubation. Bacteriocin concentrations in samples reached concentrations of 60 and 80 AU/g for strains A-48-32 and S-32-81, respectively. These results clearly indicate that AS-48 can be used in the control of L. monocytogenes in sausages.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Food Microbiology - Volume 103, Issue 2, 25 August 2005, Pages 179-190
Journal: International Journal of Food Microbiology - Volume 103, Issue 2, 25 August 2005, Pages 179-190
نویسندگان
Samir Ananou, Margarita Garriga, Marta Hugas, Mercedes Maqueda, Manuel MartÃnez-Bueno, Antonio Gálvez, Eva Valdivia,