TY - JOUR AU - Radványi, Lilla AU - Balázs, Viktória Lilla AU - Kocsis, Béla AU - Csikós, Eszter AU - Ángyán, Virág Diána AU - Szabó, Péter AU - Biró, Viktória AU - Kocsis, Marianna AU - Farkas, Ágnes TI - Antibacterial activity of Hungarian varietal honeys against respiratory pathogens as a function of storage time JF - SCIENTIFIC REPORTS J2 - SCI REP VL - 14 PY - 2024 IS - 1 PG - 12 SN - 2045-2322 DO - 10.1038/s41598-024-60961-3 UR - https://m2.mtmt.hu/api/publication/34836449 ID - 34836449 AB - Today, antibiotic therapies that previously worked well against certain bacteria due to their natural sensitivity, are becoming less effective. Honey has been proven to inhibit the biofilm formation of some respiratory bacteria, however few data are available on how the storage time affects the antibacterial effect. The activity of black locust, goldenrod, linden and sunflower honeys from three consecutive years (2020, 2021, 2022) was analyzed in 2022 against Gram-negative (Haemophilus influenzae, H. parainfluenzae, Pseudomonas aeruginosa) and Gram-positive (Streptococcus pneumoniae) bacteria using in vitro microbiological methods. After determining the physicochemical parameters of honey, broth microdilution was applied to determine the minimum inhibitory concentration of each honey type against each bacterium, and crystal violet assay was used to test their antibiofilm effect. The possible mechanism of action was explored with membrane degradation test, while structural changes were illustrated with scanning electron microscopy. Honeys stored for one or two years were darker than fresh honeys, while older honeys had significantly lower antibacterial activity. The most remarkable inhibitory effect was exerted by linden and sunflower honeys, and P. aeruginosa proved to be the most resistant bacterium. Based on our results, honey intended for medicinal purposes should be used as fresh as possible during a treatment. LA - English DB - MTMT ER - TY - JOUR AU - Murillo, Enrique AU - Nagy, Veronika AU - Menchaca, Dania AU - Deli, József AU - Agócs, Attila TI - Changes in the Carotenoids of Zamia dressleri Leaves during Development JF - PLANTS-BASEL J2 - PLANTS-BASEL VL - 13 PY - 2024 IS - 9 PG - 11 SN - 2223-7747 DO - 10.3390/plants13091251 UR - https://m2.mtmt.hu/api/publication/34832995 ID - 34832995 AB - It has been observed that the leaves of some Zamia species undergo a kind of “reverse ripening”; that is, they change from their original brown color to green during development. We assumed that this strange color change was due to the change in carotenoid composition, so we followed the changes for several weeks. The detailed carotenoid composition and content at different stages of development of the leaves was determined with HPLC-DAD focusing on the changes in red and yellow carotenoids. The total and relative amounts of red and yellow carotenoids were determined simultaneously from one measurement from a saponified and/or unsaponified extract. At the beginning of development, the concentration of red carotenoids was higher than that of the yellow ones; it decreased drastically until 22 days and continued to decrease slowly until they completely disappeared. The concentration of yellow carotenoids decreased at the beginning as well, but after 22 days it started to increase. The amount of red carotenoids started to decrease when the leaflet stopped growing. Lutein is the main component in old leaflets, which is not a red carotenoid precursor. Red carotenoids can always be found in their esterified form in the leaves. These findings support the hypothesis that red and yellow carotenoid accumulation are independent and probably have different functions in the leaflet. The strange color change was explained based on the compartmentalization of red and yellow carotenoids and on the changing activity of the enzyme capsanthin–capsorubin synthase responsible for the synthesis of red carotenoids capsorubin and capsanthin. LA - English DB - MTMT ER - TY - CONF AU - Koloh, Regina AU - Farkas, Ágnes AU - Balázs, Viktória Lilla AU - Kocsis, Béla ED - Kovács, Bettina ED - Glázer-Kniesz, Adrienn ED - Tislér, Ádám TI - A gesztenyeméz biofilm képződést gátló hatása T2 - Absztraktkötet: XII. Interdiszciplináris Doktorandusz Konferencia = Book of Abstract: XII. Interdisciplinary Doctoral Conference PB - Pécsi Tudományegyetem Doktorandusz Önkormányzat C1 - Pécs SN - 9789636262457 PY - 2024 SP - 87 EP - 87 PG - 1 UR - https://m2.mtmt.hu/api/publication/34814487 ID - 34814487 LA - Hungarian DB - MTMT ER - TY - CONF AU - Nagy, Anett AU - Ormai, Edit AU - Horváth, Györgyi AU - Kocsis, Béla AU - Balázs, Viktória Lilla ED - Kovács, Bettina ED - Glázer-Kniesz, Adrienn ED - Tislér, Ádám TI - Mi az evidenciaalapú megközelítés alapján megítélt összefüggés a Pseudomonas aeruginosa baktérium és a kakukkfű illóolaj között? T2 - Absztraktkötet: XII. Interdiszciplináris Doktorandusz Konferencia = Book of Abstract: XII. Interdisciplinary Doctoral Conference PB - Pécsi Tudományegyetem Doktorandusz Önkormányzat C1 - Pécs SN - 9789636262457 PY - 2024 SP - 86 EP - 86 PG - 1 UR - https://m2.mtmt.hu/api/publication/34814458 ID - 34814458 LA - Hungarian DB - MTMT ER - TY - CONF AU - Ángyán, Virág Diána AU - Farkas, Ágnes AU - Kocsis, Béla AU - Radványi, Lilla ED - Kovács, Bettina ED - Glázer-Kniesz, Adrienn ED - Tislér, Ádám TI - Hársméz, levendula illóolaj és kombinációjuk antibakteriális aktivitása T2 - Absztraktkötet: XII. Interdiszciplináris Doktorandusz Konferencia = Book of Abstract: XII. Interdisciplinary Doctoral Conference PB - Pécsi Tudományegyetem Doktorandusz Önkormányzat C1 - Pécs SN - 9789636262457 PY - 2024 SP - 85 EP - 85 PG - 1 UR - https://m2.mtmt.hu/api/publication/34814440 ID - 34814440 LA - Hungarian DB - MTMT ER - TY - CONF AU - Ormai, Edit AU - Kocsis, Béla AU - Böszörményi, Andrea AU - Horváth, Györgyi AU - Balázs, Viktória Lilla ED - Kovács, Bettina ED - Glázer-Kniesz, Adrienn ED - Tislér, Ádám TI - Nozokomiális patogének és a szegfűszeg illóolaj kapcsolatának bemutatása evidenciaalapú megközelítésben T2 - Absztraktkötet: XII. Interdiszciplináris Doktorandusz Konferencia = Book of Abstract: XII. Interdisciplinary Doctoral Conference PB - Pécsi Tudományegyetem Doktorandusz Önkormányzat C1 - Pécs SN - 9789636262457 PY - 2024 SP - 83 EP - 83 PG - 1 UR - https://m2.mtmt.hu/api/publication/34814410 ID - 34814410 LA - Hungarian DB - MTMT ER - TY - CONF AU - Shubail, Sarah AU - Csikós, Eszter AU - Kemény, Ágnes AU - Jaber, Areej AU - Utczás, Margita AU - Horváth, Györgyi ED - Szabó, Szilvia TI - Növényi kivonatok vizsgálata in vivo kontakt dermatisz modellben T2 - Abstract Book of the 7th International Cholnoky Symposium PY - 2024 SP - 25 EP - 25 PG - 1 UR - https://m2.mtmt.hu/api/publication/34795176 ID - 34795176 LA - Hungarian DB - MTMT ER - TY - CONF AU - Nagy, Anett AU - Ormai, Edit AU - Horváth, Györgyi AU - Kocsis, Béla AU - Balázs, Viktória Lilla ED - Szabó, Szilvia TI - Négy gyógyszerkönyvi illóolaj antibakteriális hatásának vizsgálata a Pseudomonas aeruginosa baktériummal szemben T2 - Abstract Book of the 7th International Cholnoky Symposium PY - 2024 SP - 23 EP - 23 PG - 1 UR - https://m2.mtmt.hu/api/publication/34795108 ID - 34795108 LA - Hungarian DB - MTMT ER - TY - CONF AU - Koloh, Regina AU - Farkas, Ágnes AU - Kocsis, Béla AU - Kocsis, Marianna AU - Balázs, Viktória Lilla ED - Szabó, Szilvia TI - A gesztenyeméz biofilmgátló hatása az idő függvényében T2 - Abstract Book of the 7th International Cholnoky Symposium PY - 2024 SP - 21 EP - 21 PG - 1 UR - https://m2.mtmt.hu/api/publication/34795054 ID - 34795054 LA - Hungarian DB - MTMT ER - TY - CONF AU - Ormai, Edit AU - Kocsis, Béla AU - Böszörményi, Andrea AU - Horváth, Györgyi AU - Balázs, Viktória Lilla ED - Szabó, Szilvia TI - A borsmenta illóolaj hatása kórházi környezetben előforduló patogéneken T2 - Abstract Book of the 7th International Cholnoky Symposium PY - 2024 SP - 19 EP - 19 PG - 1 UR - https://m2.mtmt.hu/api/publication/34795038 ID - 34795038 LA - Hungarian DB - MTMT ER -