NECIDOVÁ, Lenka, Bohdana MRNOUSOVA, Danka HARUŠTIAKOVÁ, Sarka BURSOVA, Bohumira JANSTOVA and Jozef GOLIANE. The effect of selected preservatives on the growth of Listeria monocytogenes in ready-to-eat foods. LWT-Food Science and Technology. Amsterdam: Elsevier Science BV, 2019, vol. 116, DEC 2019, p. 1-7. ISSN 0023-6438. Available from: https://dx.doi.org/10.1016/j.lwt.2019.108459.
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Basic information
Original name The effect of selected preservatives on the growth of Listeria monocytogenes in ready-to-eat foods
Authors NECIDOVÁ, Lenka (203 Czech Republic, guarantor), Bohdana MRNOUSOVA (203 Czech Republic), Danka HARUŠTIAKOVÁ (703 Slovakia, belonging to the institution), Sarka BURSOVA (203 Czech Republic), Bohumira JANSTOVA (203 Czech Republic) and Jozef GOLIANE (703 Slovakia).
Edition LWT-Food Science and Technology, Amsterdam, Elsevier Science BV, 2019, 0023-6438.
Other information
Original language English
Type of outcome Article in a journal
Field of Study 40401 Agricultural biotechnology and food biotechnology
Country of publisher Netherlands
Confidentiality degree is not subject to a state or trade secret
WWW URL
Impact factor Impact factor: 4.006
RIV identification code RIV/00216224:14310/19:00112477
Organization unit Faculty of Science
Doi http://dx.doi.org/10.1016/j.lwt.2019.108459
UT WoS 000491684900060
Keywords in English Food safety; Sodium benzoate; Potassium sorbate; Intrinsic factors
Tags 14119612, podil, rivok
Tags International impact, Reviewed
Changed by Changed by: Mgr. Marie Šípková, DiS., učo 437722. Changed: 29/3/2020 19:53.
Abstract
Our study evaluated the possibility of survival and growth of L. monocytogenes in 9 types of ready-to-eat foods. The evaluation was focused on the effectiveness of selected preservatives, namely sodium benzoate mixed with potassium sorbate (E 211 and E 202) and a commercially available preservative Defence JB. All delicatessen products were stored at 5 or 6 degrees C. The enumeration of L. monocytogenes was carried out in accordance with the reference ISO method. In most tested products, L. monocytogenes was unable to proliferate and its counts at the end of storage were significantly lower than those at the baseline after the artificial inoculation. This holds true both for samples with preservatives and for those without any preservative. The only exceptions were pasta salad and hard-boiled eggs in mayonnaise, with L. monocytogenes reaching the same (hard-boiled eggs in mayonnaise) or even higher counts (pasta salad) at the end of storage than at the baseline, both in the presence and absence of preservatives. Our results suggest that synergistic effects of intrinsic factors such as pH and a(w) with low storage temperatures plays a greater role in controlling L. monocytogenes growth than the tested preservatives (sodium benzoate/potassium sorbate and Defence JB).
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