Integrated Monitoring and Control of Foodborne Viruses in European Food Supply Chains

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Integrated Monitoring and Control of Foodborne Viruses in European Food Supply Chains (en)
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Ekstrakt kore nara (Punica granatum L.) kao prirodni antivirusni agens za redukciju humanih norovirusa in vitro

Živković, Ivana

(Универзитет у Београду, Пољопривредни факултет, 2022)

TY  - THES
AU  - Živković, Ivana
PY  - 2022
UR  - http://RIVeC.institut-palanka.rs/handle/123456789/624
AB  - Humani norovirusi (HuNoV) su dominatni uzročnici epidemija akutnog gastroenteritisa izazvanihkontaminiranom hranom. U cilju njihove redukcije sa površine svežeg povrća i površina koje dolazeu kontakt sa hranom, testirana je antinorovirusna aktivnost 11 ekstrakata lekovitih biljaka. Za daljaistraživanja izabran je ekstrakt kore nara, koji je u koncentraciji 5 mg/mL redukovao broj česticaHuNoV za 99% u fosfatnom puferu, simuliranim gastrointestinalnim fluidima i na površinamasvežeg čeri paradajza i mladog luka, a za 91% u mleku. Matični sok od nara redukovao je HuNoVza 97%. Potencijal ekstrakta kore nara kao prirodnog dezinfekcionog sredstva na površinama odnerđajućeg čelika i plastike je značajan (> 3 log10 GE/μL) i u skladu sa predloženim normama kojese primenjuju za virusna dezinfekciona sredstva. Radi komparacije, testirano dezinfekciono sredstvana bazi hipohlorita (250 ppm) redukovalo je HuNoV na približno istom nivou. Proverena jedezinfekcija površina kontaminiranih mešavinom suspenzija HuNoV i koliformne bakterijeEscherichia coli, primenom brzog ATP bioluminiscentnog testa i RT-qPCR metodom. Sredstvo nabazi hipohlorita bez naknadnog ispiranja, dalo je rezultat koji se našao u zoni upozorenja, dok surezultati nakon ispiranja vodom detektovani u zoni čistog. Broj detektovanog HuNoV nanerđajućem čeliku i plastici, posle sanitacije sa sredstvom na bazi hipohlorita iznosio je 2,2 odnosno2,38 log10 GE/μL. Takođe, pokušano je da se primenom alergen indikator protein testa detektujurazličite koncentracije HuNoV (103- 106 GE/μL) nanete na prethodno sterilisanu površinunerđajućeg čelika. Posle inkubacije na 70ºC/10 min, što povećava senzitivnost testa, najvišatestirana koncentracija virusa dala je pozitivan rezultat.
AB  - Human noroviruses (HuNoV) are the dominant agents of foodborne acute gastroenteritis andepidemic outbreaks. In order to reduce them from the surface of fresh vegetables and food-contactsurfaces, the antinoroviral activity of 11 medicinal plant extracts was tested. For further research,pomegranate peel extract was selected, which at a concentration of 5 mg/mL reduced the number ofHuNoV particles by 99% in phosphate buffer, simulated gastrointestinal fluids and on the surface offresh cherry tomatoes and green onions, and by 91% in milk. Pomegranate juice reduced HuNoV by97%. The potential of pomegranate peel extract as a natural disinfectant on stainless steel andplastic surfaces is significant (> 3 log10 GE/μL) and in accordance with the proposed standardsapplicable to viral disinfectants. For comparison, the tested hypochlorite-based disinfectant (250ppm) reduced HuNoV to approximately the same level. Disinfection of surfaces contaminated witha mixture of suspension of HuNoV and coliform bacteria Escherichia coli was checked, using arapid ATP bioluminescence test and RT-qPCR method. The hypochlorite-based agent withoutsubsequent rinsing gave the result that was in the warning zone, while the results after rinsing withwater were detected in the clean zone. The number of detected noroviruses on stainless steel andplastic, after sanitation with a hypochlorite-based agent was 2,2 and 2,38 log10 GE/μL, respectively.Also, an attempt was made to detect different concentrations of HuNoV (103-106 GE/μL) applied toa previously sterilized stainless steel surface using an allergen indicator protein test. Afterincubation at 70ºC/10 min which increases the sensitivity of the test, the highest tested virusconcentration gave a positive result.
PB  - Универзитет у Београду, Пољопривредни факултет
T2  - Универзитет у Београду
T1  - Ekstrakt kore nara (Punica granatum L.) kao prirodni antivirusni agens za redukciju humanih norovirusa in vitro
UR  - https://hdl.handle.net/21.15107/rcub_nardus_21041
ER  - 
@phdthesis{
author = "Živković, Ivana",
year = "2022",
abstract = "Humani norovirusi (HuNoV) su dominatni uzročnici epidemija akutnog gastroenteritisa izazvanihkontaminiranom hranom. U cilju njihove redukcije sa površine svežeg povrća i površina koje dolazeu kontakt sa hranom, testirana je antinorovirusna aktivnost 11 ekstrakata lekovitih biljaka. Za daljaistraživanja izabran je ekstrakt kore nara, koji je u koncentraciji 5 mg/mL redukovao broj česticaHuNoV za 99% u fosfatnom puferu, simuliranim gastrointestinalnim fluidima i na površinamasvežeg čeri paradajza i mladog luka, a za 91% u mleku. Matični sok od nara redukovao je HuNoVza 97%. Potencijal ekstrakta kore nara kao prirodnog dezinfekcionog sredstva na površinama odnerđajućeg čelika i plastike je značajan (> 3 log10 GE/μL) i u skladu sa predloženim normama kojese primenjuju za virusna dezinfekciona sredstva. Radi komparacije, testirano dezinfekciono sredstvana bazi hipohlorita (250 ppm) redukovalo je HuNoV na približno istom nivou. Proverena jedezinfekcija površina kontaminiranih mešavinom suspenzija HuNoV i koliformne bakterijeEscherichia coli, primenom brzog ATP bioluminiscentnog testa i RT-qPCR metodom. Sredstvo nabazi hipohlorita bez naknadnog ispiranja, dalo je rezultat koji se našao u zoni upozorenja, dok surezultati nakon ispiranja vodom detektovani u zoni čistog. Broj detektovanog HuNoV nanerđajućem čeliku i plastici, posle sanitacije sa sredstvom na bazi hipohlorita iznosio je 2,2 odnosno2,38 log10 GE/μL. Takođe, pokušano je da se primenom alergen indikator protein testa detektujurazličite koncentracije HuNoV (103- 106 GE/μL) nanete na prethodno sterilisanu površinunerđajućeg čelika. Posle inkubacije na 70ºC/10 min, što povećava senzitivnost testa, najvišatestirana koncentracija virusa dala je pozitivan rezultat., Human noroviruses (HuNoV) are the dominant agents of foodborne acute gastroenteritis andepidemic outbreaks. In order to reduce them from the surface of fresh vegetables and food-contactsurfaces, the antinoroviral activity of 11 medicinal plant extracts was tested. For further research,pomegranate peel extract was selected, which at a concentration of 5 mg/mL reduced the number ofHuNoV particles by 99% in phosphate buffer, simulated gastrointestinal fluids and on the surface offresh cherry tomatoes and green onions, and by 91% in milk. Pomegranate juice reduced HuNoV by97%. The potential of pomegranate peel extract as a natural disinfectant on stainless steel andplastic surfaces is significant (> 3 log10 GE/μL) and in accordance with the proposed standardsapplicable to viral disinfectants. For comparison, the tested hypochlorite-based disinfectant (250ppm) reduced HuNoV to approximately the same level. Disinfection of surfaces contaminated witha mixture of suspension of HuNoV and coliform bacteria Escherichia coli was checked, using arapid ATP bioluminescence test and RT-qPCR method. The hypochlorite-based agent withoutsubsequent rinsing gave the result that was in the warning zone, while the results after rinsing withwater were detected in the clean zone. The number of detected noroviruses on stainless steel andplastic, after sanitation with a hypochlorite-based agent was 2,2 and 2,38 log10 GE/μL, respectively.Also, an attempt was made to detect different concentrations of HuNoV (103-106 GE/μL) applied toa previously sterilized stainless steel surface using an allergen indicator protein test. Afterincubation at 70ºC/10 min which increases the sensitivity of the test, the highest tested virusconcentration gave a positive result.",
publisher = "Универзитет у Београду, Пољопривредни факултет",
journal = "Универзитет у Београду",
title = "Ekstrakt kore nara (Punica granatum L.) kao prirodni antivirusni agens za redukciju humanih norovirusa in vitro",
url = "https://hdl.handle.net/21.15107/rcub_nardus_21041"
}
Živković, I.. (2022). Ekstrakt kore nara (Punica granatum L.) kao prirodni antivirusni agens za redukciju humanih norovirusa in vitro. in Универзитет у Београду
Универзитет у Београду, Пољопривредни факултет..
https://hdl.handle.net/21.15107/rcub_nardus_21041
Živković I. Ekstrakt kore nara (Punica granatum L.) kao prirodni antivirusni agens za redukciju humanih norovirusa in vitro. in Универзитет у Београду. 2022;.
https://hdl.handle.net/21.15107/rcub_nardus_21041 .
Živković, Ivana, "Ekstrakt kore nara (Punica granatum L.) kao prirodni antivirusni agens za redukciju humanih norovirusa in vitro" in Универзитет у Београду (2022),
https://hdl.handle.net/21.15107/rcub_nardus_21041 .

Variability in somatic embryo-forming capacity of spinach

Belić, Maja; Zdravković-Korać, Snežana; Uzelac, Branka; Calić, Dušica; Pavlović, Suzana; Milojević, Jelena

(Nature Research, Berlin, 2020)

TY  - JOUR
AU  - Belić, Maja
AU  - Zdravković-Korać, Snežana
AU  - Uzelac, Branka
AU  - Calić, Dušica
AU  - Pavlović, Suzana
AU  - Milojević, Jelena
PY  - 2020
UR  - http://RIVeC.institut-palanka.rs/handle/123456789/214
AB  - High variability in somatic embryo (SE)-forming capacity has previously been observed in several spinach cultivars. Such variability frequently accounted for more variation in embryogenic response of the explants than the factor being investigated. Hence, the variability in embryogenic capacity was examined in the present study at both the population and the single-seedling level, using seeds of spinach cultivar Matador obtained from nine European seed companies. Seed population obtained from Slovenia (Sl) was superior to others, with the highest regeneration frequency (100%) and the highest mean SE number (14.4). A total of 82% of these seedlings had 80-100% of regenerating explants, while in populations with intermediate embryogenic capacity approximately 40% of seedlings had 20-60% of regenerating explants. The explants from the majority of seedlings (52-100%) in the least responsive populations were irresponsive. Furthermore, the explants from Sl seedlings regenerated from 10-20 (43.5%) up to>20 (27.6%) SEs on average, while the explants from the majority of seedlings belonging to other populations regenerated 1-10 SEs. The present study strongly indicates that the variability of plant material must not be overlooked, because choosing more responsive individuals for one treatment and less responsive ones for another may lead to misinterpretation of the data.
PB  - Nature Research, Berlin
T2  - Scientific Reports
T1  - Variability in somatic embryo-forming capacity of spinach
IS  - 1
VL  - 10
DO  - 10.1038/s41598-020-76279-9
ER  - 
@article{
author = "Belić, Maja and Zdravković-Korać, Snežana and Uzelac, Branka and Calić, Dušica and Pavlović, Suzana and Milojević, Jelena",
year = "2020",
abstract = "High variability in somatic embryo (SE)-forming capacity has previously been observed in several spinach cultivars. Such variability frequently accounted for more variation in embryogenic response of the explants than the factor being investigated. Hence, the variability in embryogenic capacity was examined in the present study at both the population and the single-seedling level, using seeds of spinach cultivar Matador obtained from nine European seed companies. Seed population obtained from Slovenia (Sl) was superior to others, with the highest regeneration frequency (100%) and the highest mean SE number (14.4). A total of 82% of these seedlings had 80-100% of regenerating explants, while in populations with intermediate embryogenic capacity approximately 40% of seedlings had 20-60% of regenerating explants. The explants from the majority of seedlings (52-100%) in the least responsive populations were irresponsive. Furthermore, the explants from Sl seedlings regenerated from 10-20 (43.5%) up to>20 (27.6%) SEs on average, while the explants from the majority of seedlings belonging to other populations regenerated 1-10 SEs. The present study strongly indicates that the variability of plant material must not be overlooked, because choosing more responsive individuals for one treatment and less responsive ones for another may lead to misinterpretation of the data.",
publisher = "Nature Research, Berlin",
journal = "Scientific Reports",
title = "Variability in somatic embryo-forming capacity of spinach",
number = "1",
volume = "10",
doi = "10.1038/s41598-020-76279-9"
}
Belić, M., Zdravković-Korać, S., Uzelac, B., Calić, D., Pavlović, S.,& Milojević, J.. (2020). Variability in somatic embryo-forming capacity of spinach. in Scientific Reports
Nature Research, Berlin., 10(1).
https://doi.org/10.1038/s41598-020-76279-9
Belić M, Zdravković-Korać S, Uzelac B, Calić D, Pavlović S, Milojević J. Variability in somatic embryo-forming capacity of spinach. in Scientific Reports. 2020;10(1).
doi:10.1038/s41598-020-76279-9 .
Belić, Maja, Zdravković-Korać, Snežana, Uzelac, Branka, Calić, Dušica, Pavlović, Suzana, Milojević, Jelena, "Variability in somatic embryo-forming capacity of spinach" in Scientific Reports, 10, no. 1 (2020),
https://doi.org/10.1038/s41598-020-76279-9 . .
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