The effect of pulsed UV light on Escherichia coli O157:H7, Listeria monocytogenes, Salmonella Typhimurium, Staphylococcus aureus and staphylococcal enterotoxin A on sliced fermented salami and its chemical quality
Само за регистроване кориснике
2017
Чланак у часопису (Објављена верзија)
Метаподаци
Приказ свих података о документуАпстракт
Pulsed UV light (PL) applied at a fluence of 3 J/cm(2) was effective to reduce Listeria monocytogenes, Escherichia coli 0157:H7, Salmonella Typhimurium and Staphylococcus aureus for 2.24, 2.29, 2.25 and 2.12 log CFU/g on the surface of dry fermented salami. Further increase in the fluence of PL treatment did not increase levels of microbial inactivation. However, the time interval between the contamination and PL treatment was found to have a significant impact on the efficacy of PL treatment and should be kept as short as possible. After initial PL treatment slices of fermented salami were packed in vacuum or in 80%CO2/20%N-2 modified atmosphere and stored at 4 degrees C to investigate the effect of PL treatment on protein and lipid oxidation as the shelf life of fermented salami is not usually limited by microbial deterioration, but by chemical and sensory alterations. In this study observed lipid oxidation values for PL treated vacuum and modified atmosphere packed fermented salami ...slices fall within the acceptable threshold for the rancid odor, except for the sample treated with the highest fluence tested (15 J/cm(2)), packed in modified atmosphere and kept in cold storage for 9 weeks (1.23 mg MDA/kg). All values were below the threshold for rancid flavor, too. The significant rise in protein oxidation of PL treated fermented salami slices, perceived as 28% increase of carbonyl content compared to untreated samples, was observed only after 9 weeks of cold storage in both vacuum and modified atmosphere packed samples. The results of chemical analysis are in agreement with previously published results of sensory analysis. Current results show the applicability of PL to improve microbial safety of sliced fermented salami that are prone to cross-contamination without affecting quality attributes by lipid and protein oxidation.
Кључне речи:
Pulsed light / Decontamination / Microbial safety / Quality / Meat processing / Pathogens / Enterotoxin / Protein / Lipid / OxidationИзвор:
Food Control, 2017, 73, 829-837Издавач:
- Elsevier Sci Ltd, Oxford
Финансирање / пројекти:
- Erasmus Mundus Partnership Action 2 program Basileus
- Одабране биолошке опасности за безбедност/квалитет хране анималног порекла и контролне мере од фарме до потрошача (RS-MESTD-Technological Development (TD or TR)-31034)
- EU FP6 Project "Pathogen Combat"
DOI: 10.1016/j.foodcont.2016.09.029
ISSN: 0956-7135
WoS: 000405537400009
Scopus: 2-s2.0-84998953939
Институција/група
Poljoprivredni fakultetTY - JOUR AU - Rajković, Andreja AU - Tomašević, Igor AU - De Meulenaer, Bruno AU - Devlieghere, Frank PY - 2017 UR - http://aspace.agrif.bg.ac.rs/handle/123456789/4470 AB - Pulsed UV light (PL) applied at a fluence of 3 J/cm(2) was effective to reduce Listeria monocytogenes, Escherichia coli 0157:H7, Salmonella Typhimurium and Staphylococcus aureus for 2.24, 2.29, 2.25 and 2.12 log CFU/g on the surface of dry fermented salami. Further increase in the fluence of PL treatment did not increase levels of microbial inactivation. However, the time interval between the contamination and PL treatment was found to have a significant impact on the efficacy of PL treatment and should be kept as short as possible. After initial PL treatment slices of fermented salami were packed in vacuum or in 80%CO2/20%N-2 modified atmosphere and stored at 4 degrees C to investigate the effect of PL treatment on protein and lipid oxidation as the shelf life of fermented salami is not usually limited by microbial deterioration, but by chemical and sensory alterations. In this study observed lipid oxidation values for PL treated vacuum and modified atmosphere packed fermented salami slices fall within the acceptable threshold for the rancid odor, except for the sample treated with the highest fluence tested (15 J/cm(2)), packed in modified atmosphere and kept in cold storage for 9 weeks (1.23 mg MDA/kg). All values were below the threshold for rancid flavor, too. The significant rise in protein oxidation of PL treated fermented salami slices, perceived as 28% increase of carbonyl content compared to untreated samples, was observed only after 9 weeks of cold storage in both vacuum and modified atmosphere packed samples. The results of chemical analysis are in agreement with previously published results of sensory analysis. Current results show the applicability of PL to improve microbial safety of sliced fermented salami that are prone to cross-contamination without affecting quality attributes by lipid and protein oxidation. PB - Elsevier Sci Ltd, Oxford T2 - Food Control T1 - The effect of pulsed UV light on Escherichia coli O157:H7, Listeria monocytogenes, Salmonella Typhimurium, Staphylococcus aureus and staphylococcal enterotoxin A on sliced fermented salami and its chemical quality EP - 837 SP - 829 VL - 73 DO - 10.1016/j.foodcont.2016.09.029 ER -
@article{ author = "Rajković, Andreja and Tomašević, Igor and De Meulenaer, Bruno and Devlieghere, Frank", year = "2017", abstract = "Pulsed UV light (PL) applied at a fluence of 3 J/cm(2) was effective to reduce Listeria monocytogenes, Escherichia coli 0157:H7, Salmonella Typhimurium and Staphylococcus aureus for 2.24, 2.29, 2.25 and 2.12 log CFU/g on the surface of dry fermented salami. Further increase in the fluence of PL treatment did not increase levels of microbial inactivation. However, the time interval between the contamination and PL treatment was found to have a significant impact on the efficacy of PL treatment and should be kept as short as possible. After initial PL treatment slices of fermented salami were packed in vacuum or in 80%CO2/20%N-2 modified atmosphere and stored at 4 degrees C to investigate the effect of PL treatment on protein and lipid oxidation as the shelf life of fermented salami is not usually limited by microbial deterioration, but by chemical and sensory alterations. In this study observed lipid oxidation values for PL treated vacuum and modified atmosphere packed fermented salami slices fall within the acceptable threshold for the rancid odor, except for the sample treated with the highest fluence tested (15 J/cm(2)), packed in modified atmosphere and kept in cold storage for 9 weeks (1.23 mg MDA/kg). All values were below the threshold for rancid flavor, too. The significant rise in protein oxidation of PL treated fermented salami slices, perceived as 28% increase of carbonyl content compared to untreated samples, was observed only after 9 weeks of cold storage in both vacuum and modified atmosphere packed samples. The results of chemical analysis are in agreement with previously published results of sensory analysis. Current results show the applicability of PL to improve microbial safety of sliced fermented salami that are prone to cross-contamination without affecting quality attributes by lipid and protein oxidation.", publisher = "Elsevier Sci Ltd, Oxford", journal = "Food Control", title = "The effect of pulsed UV light on Escherichia coli O157:H7, Listeria monocytogenes, Salmonella Typhimurium, Staphylococcus aureus and staphylococcal enterotoxin A on sliced fermented salami and its chemical quality", pages = "837-829", volume = "73", doi = "10.1016/j.foodcont.2016.09.029" }
Rajković, A., Tomašević, I., De Meulenaer, B.,& Devlieghere, F.. (2017). The effect of pulsed UV light on Escherichia coli O157:H7, Listeria monocytogenes, Salmonella Typhimurium, Staphylococcus aureus and staphylococcal enterotoxin A on sliced fermented salami and its chemical quality. in Food Control Elsevier Sci Ltd, Oxford., 73, 829-837. https://doi.org/10.1016/j.foodcont.2016.09.029
Rajković A, Tomašević I, De Meulenaer B, Devlieghere F. The effect of pulsed UV light on Escherichia coli O157:H7, Listeria monocytogenes, Salmonella Typhimurium, Staphylococcus aureus and staphylococcal enterotoxin A on sliced fermented salami and its chemical quality. in Food Control. 2017;73:829-837. doi:10.1016/j.foodcont.2016.09.029 .
Rajković, Andreja, Tomašević, Igor, De Meulenaer, Bruno, Devlieghere, Frank, "The effect of pulsed UV light on Escherichia coli O157:H7, Listeria monocytogenes, Salmonella Typhimurium, Staphylococcus aureus and staphylococcal enterotoxin A on sliced fermented salami and its chemical quality" in Food Control, 73 (2017):829-837, https://doi.org/10.1016/j.foodcont.2016.09.029 . .