Temat: campylobacter - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Antimicrobial resistance of thermophilic Campylobacter spp. isolated from cattle in Poland
Autorzy:: Bednarski, M
Wieliczko, A.
Powiązania:: https://bibliotekanauki.pl/articles/32555.pdf
Data publikacji:: 2010
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: Polska
cattle
Campylobacter
isolation
antimicrobial resistance
antibiotic resistance
food-borne disease
human gastroenteritis
Campylobacter jejuni
Opis:: Campylobacter species are among the most frequently identified bacterial causes of human gastroenteritis. Because Campylobacter spp. harbored by cattle can be transmitted to humans, in this study we investigated antimicrobial resistance of thermophilic Campylobacter isolated from cows. Our study included 150 strains of Campylobacter (143 strains of C. jejuni and 7 strains of C. coli) isolated from cows in South-Western Poland. The minimal inhibitory concentration (MIC) to ciprofloxacin, erythromycin, gentamicin and tetracycline were determined using the agar dilution methodology. All strains of C. coli were susceptible to all four drugs studied. The most frequently detected resistance of C. jejuni was to ciprofloxacin (26 strains 18.2%). Resistance to tetracycline was observed in 5 strains (3.5%). All strains of C. jejuni were susceptible to erythromycin and gentamicin.
Źródło:: Polish Journal of Veterinary Sciences; 2010, 13, 1; 189-191
1505-1773
Pojawia się w:: Polish Journal of Veterinary Sciences
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Comparison of the localization and post-translational modification of Campylobacter coli CjaC and its homolog from Campylobacter jejuni, Cj0734c/HisJ
Autorzy:: Wyszyńska, Agnieszka
Tomczyk, Karolina
Jagusztyn-Krynicka, Elżbieta
Powiązania:: https://bibliotekanauki.pl/articles/1041127.pdf
Data publikacji:: 2007
Wydawca:: Polskie Towarzystwo Biochemiczne
Tematy:: glycosylation
Campylobacter
protein localization
Opis:: Campylobacter is an asaccharolytic microorganism which uses amino acids as a source of carbon and energy. CjaC/HisJ is a ligand-binding protein, a component of the ABC transport system. Campylobacter CjaC/HisJ is post-translationally modified by glycosylation. The number of glycosylation motifs present in the CjaC protein is species-specific. C. coli CjaC has two and C. jejuni one motif (E/DXNYS/T) which serves as a glycan acceptor. Although the two C. coli CjaC motifs have identical amino-acid sequences they are not glycosylated with the same efficiency. The efficacy of CjaC glycosylation in Escherichia coli containing the Campylobacter pgl locus is also rather low compared to that observed in the native host. The CjaC localization is host-dependent. Despite being a lipoprotein, CjaC is recovered in E. coli from the periplasmic space whereas in Campylobacter it is anchored to the inner membrane.
Źródło:: Acta Biochimica Polonica; 2007, 54, 1; 143-150
0001-527X
Pojawia się w:: Acta Biochimica Polonica
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Simultaneous occurrence of selected food-borne bacterial pathogens on bovine hides, carcasses and beef meat
Autorzy:: Wieczorek, K.
Osek, J.
Powiązania:: https://bibliotekanauki.pl/articles/31438.pdf
Data publikacji:: 2010
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: simultaneous occurrence
bacterial pathogen
bovine hide
bovine carcass
beef meat
food-borne pathogen
food safety
salmonella
Listeria monocytogenes
Campylobacter
Campylobacter jejuni
Opis:: The aim of this study was to determine the simultaneous occurence of Salmonella spp., L. monocytogenes, verotoxigenic E. coli (VTEC), and Campylobacter spp. in slaughtered cattle and in beef meat subjected for human consumption. A total of 406 bovine hides and 406 corresponding carcasses were used to collect the samples with a swab method after exsanguination and evisceration of animals, respectively. Furthermore, 362 beef meat samples were purchased in local retail shops over the same period of time as for the bovine samples. Food-borne bacterial pathogens were identified with standard ISO methods with some modification by the use of PCR for VTEC. The isolated bacteria were then molecularly speciated (Campylobacter), serotyped (L. monocytogenes) and characterized for the presence of several virulence marker genes (VTEC and Campylobacter). It was found that 49 hide (12.1%) and 3 (0.7%) carcass samples were contaminated with more than one bacterial pathogen tested. Most of the hides were positive for Campylobacter spp. and VTEC (27 samples) and Campylobacter spp. together with L. monocytogenes (12 samples). Eight bovine hides contained L. monocytogenes and VTEC while L. monocytogenes and Salmonella spp. were detected in one sample. Furthermore, 3 pathogens (Campylobacter spp., L. monocytogenes and VTEC) were simultaneously identified in one bovine hide tested. In case of bovine carcasses 2 samples contained Campylobacter spp. and VTEC whereas one carcass was positive for L. monocytogenes and VTEC. On the other hand, 10 out of 362 (2.8%) minced beef samples were contaminated with at least two pathogens tested. The majority of these samples were contaminated with L. monocytogenes and Salmonella spp. (6 samples). It was noticed that equal number of C. jejuni and C. coli were found, irrespective of the origin of the samples. Most of the strains possessed more than one pathogenic factor as identified by PCR. Molecular serotyping of L. monocytogenes revealed that the majority of the isolates (27 out of 31; 87.1%) belonged to 1/2a serogroup. It was found that most of the VTEC isolates possessed the Shiga toxin stx2 gene (12 strains) whereas only 2 strains were stx1-positive. The eneterohemolysin and intimin markers were identified only in 7 and 2 isolates, respectively. PCR analysis revealed that 4 VTEC belonged to O91 serogroup, 2 strains were O145 and 1 isolate was identified as O113. None of the VTEC detected in the study was O157 serogroup.
Źródło:: Polish Journal of Veterinary Sciences; 2010, 13, 4
1505-1773
Pojawia się w:: Polish Journal of Veterinary Sciences
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Antybiotykooporność Campylobacter i Salmonella izolowanych w krajach Unii Europejskiej w 2012 r.
Antibiotic resistance of Campylobacter and Salmonella isolated in the European Union Member States in 2012
Autorzy:: Wieczorek, K.
Osek, J.
Powiązania:: https://bibliotekanauki.pl/articles/861986.pdf
Data publikacji:: 2014
Wydawca:: Krajowa Izba Lekarsko-Weterynaryjna
Tematy:: zywnosc
higiena zywnosci
bakterie
Campylobacter
Salmonella
lekoopornosc
opornosc na antybiotyki
Unia Europejska
Źródło:: Życie Weterynaryjne; 2014, 89, 07
0137-6810
Pojawia się w:: Życie Weterynaryjne
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: Zastosowanie przyjaznych dla środowiska technik dezynfekcji do inaktywacji Campylobacter sp. w mięsie drobiowym
Application of environmentally friendly techniques to inactivate Campylobacter sp. in poultry meat
Autorzy:: Szosland-Faltyn, A.
Bartodziejska, B.
Krolasik, J.
Paziak-Domanska, B.
Powiązania:: https://bibliotekanauki.pl/articles/828433.pdf
Data publikacji:: 2015
Wydawca:: Polskie Towarzystwo Technologów Żywności
Tematy:: mieso drobiowe
zanieczyszczenia zywnosci
zanieczyszczenia mikrobiologiczne
Campylobacter
zatrucia pokarmowe
dezynfekcja
ozonowanie
promieniowanie ultrafioletowe
Opis:: Campylobacter uważany jest za jeden z głównych patogenów odpowiedzialnych za zatrucia pokarmowe, zwłaszcza po spożyciu mięsa drobiowego nieprawidłowo przechowywanego bądź poddanego niewłaściwej obróbce termicznej. Intensyfikuje się więc badania w kierunku poszukiwania technik dezynfekcyjnych bezpiecznych dla środowiska i skutecznie eliminujących ten patogen. W Zakładzie Jakości Żywności Instytutu Biotechnologii Przemysłu Rolno-Spożywczego w Łodzi podjęto badania, których celem było określenie skuteczności technik dezynfekcji ozonem i promieniowaniem UV w inaktywacji bakterii z rodzaju Campylobacter sp. na podłożu hodowlanym, a następnie w mięsie drobiowym. Wykazano, że oba czynniki dezynfekcyjne powodowały zmniejszenie liczby bakterii Campylobacter sp. W metodzie płytkowej stopień redukcji bakterii wynosił powyżej 2 log jtk/ml, niezależnie od szczepu i czynnika dezynfekującego. Stopień redukcji bakterii w mięsie drobiowym po 30-minutowym wyjaławianiu wynosił od 0,19 log jtk/ml – szczep C. coli ATCC 43478 napromieniany UV do 1,16 log jtk/ml – szczep C. jejuni (izolat własny) po działaniu ozonem. W zależności od czynnika wyjaławiającego: ozonu lub UV stopień redukcji przyjmował średnio wartości odpowiednio: 1,0 i 0,3 log jtk/ml. Z uwagi na otrzymane wyniki, zastosowanie tylko jednej z badanych technik dezynfekcji we wstępnym procesie oczyszczania mięsa drobiowego nie byłoby działaniem rekomendowanym. Natomiast ich użycie z innymi technikami dekontaminacji mogłoby zwiększyć efektywność sanityzacji i poprawić bezpieczeństwo mikrobiologiczne mięsa drobiowego, dlatego też celowe jest prowadzenie dalszych prac w tym kierunku.
Campylobacter is considered to be one of the major pathogens responsible for food poisoning that occurs particularly after consuming the incorrectly stored or improperly thermally treated poultry meat. Thus, research studies are intensified that are targeted at searching for disinfection techniques, which are environmentally safe and effectively eliminate that pathogen. The Department of Food Quality at the Institute of Agricultural and Food Biotechnology in Łódź undertook research the objective of which was to determine the effectiveness of environmentally friendly disinfection with the use of ozone and ultraviolet irradiation to inactivate Campylobacter sp. inoculated on agar plates, and, then, in poultry meat. It was proved that the two disinfecting agents caused the counts of Campylobacter spp. to decrease. When applying the method with agar plates, the reduction degree of bacteria was above 2 log cfu /ml regardless of the strain and sanitising agent. After 30 minutes of sterilizing the poultry meat, the reduction degree of bacteria therein ranged from 0.19 log cfu / ml as for the strain of UV irradiated C. coli ATCC 43478 to 1.16 log cfu /ml as for the ozone-treated C. jejuni (the authors’ own strain). Depending on the disinfecting agent: ozone or UV light, the mean degree of reduction was, respectively: 1.0 and 0.3 log cfu/ml UV. Considering the results obtained, it would not be recommended to apply only one of the disinfection methods tested to the initial cleansing process of poultry. However, the use of ozonation and UV irradiation together with other decontamination techniques could increase the effectiveness of sanitisation and improve the microbiological safety of poultry meat; therefore, it is advisable to continue the research in this field.
Źródło:: Żywność Nauka Technologia Jakość; 2015, 22, 6
1425-6959
Pojawia się w:: Żywność Nauka Technologia Jakość
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 6.

Tytuł:: Use of the Filter-Sandwich carriers in continuous effectiveness monitoring of slurry treatment methods as an element improving biosafety in agriculture
Autorzy:: Skowron, K.
Olszewska, H.
Paluszak, P.
Skowron, K.J.
Bauza-Kaszewska, J.
Powiązania:: https://bibliotekanauki.pl/articles/50039.pdf
Data publikacji:: 2013
Wydawca:: Instytut Medycyny Wsi
Tematy:: Filter-Sandwich carrier
effectiveness
monitoring
slurry
treatment method
biosafety
agriculture
slurry storage
pathogen
Salmonella
Escherichia coli
Campylobacter
physicochemical analysis
Opis:: Slurry, due to high microbiological contamination, requires hygienization before spreading. The agricultural usage of treated slurry has to guarantee biosafety. Therefore, constant monitoring of the slurry treatment process should be conducted. The use of Filter-Sandwich carriers seems to be a prospective solution. The aim of the research was to test whether Filter-Sandwich carriers influence the survivability of microorganisms during the slurry hygienization process and hence, whether they are safe for the environment. Raw cattle and swine slurry with different dry matter content was the research material. Salmonella Senftenberg W775 rods were introduced directly into the slurry and into the carriers placed in the liquid excrements stored at 4 and 20 °C, and underwent anaerobic digestion at 35 °C. The number of tested bacteria obtained from the slurry and carriers was determined using the MPN method with proper microbiological media. The values of physicochemical parameters of the raw and treated slurry were determined, both for the carriers and for slurry only. Biosafety control was also conducted for the carriers in slurry containers. The differences in the theoretical survivability between Salmonella Senftenberg W775 re-isolated from the slurry and the carriers, and in the values of the selected physicochemical parameters obtained at the end of the process, were not statistically significant. The re-contamination of the sterile slurry caused by the bacteria in the carrier was not observed after placement of the carrier with inoculated material. The conducted research proves the usefulness of Filter-Sandwich carriers for continuous hygienization monitoring of the slurry treatment process. This refers not only to the semi-technical scale, but also to the full-scale process.
Źródło:: Annals of Agricultural and Environmental Medicine; 2013, 20, 2
1232-1966
Pojawia się w:: Annals of Agricultural and Environmental Medicine
Dostawca treści:: Biblioteka Nauki