PMID- 37173419 OWN - NLM STAT- MEDLINE DCOM- 20230515 LR - 20230606 IS - 2045-2322 (Electronic) IS - 2045-2322 (Linking) VI - 13 IP - 1 DP - 2023 May 12 TI - Egyptian propolis extract for functionalization of cellulose nanofiber/poly(vinyl alcohol) porous hydrogel along with characterization and biological applications. PG - 7739 LID - 10.1038/s41598-023-34901-6 [doi] LID - 7739 AB - Bee propolis is one of the most common natural extracts and has gained significant interest in biomedicine due to its high content of phenolic acids and flavonoids, which are responsible for the antioxidant activity of natural products. The present study report that the propolis extract (PE) was produced by ethanol in the surrounding environment. The obtained PE was added at different concentrations to cellulose nanofiber (CNF)/poly(vinyl alcohol) (PVA), and subjected to freezing thawing and freeze drying methods to develop porous bioactive matrices. Scanning electron microscope (SEM) observations displayed that the prepared samples had an interconnected porous structure with pore sizes in the range of 10-100 mum. The high performance liquid chromatography (HPLC) results of PE showed around 18 polyphenol compounds, with the highest amounts of hesperetin (183.7 microg/mL), chlorogenic acid (96.9 microg/mL) and caffeic acid (90.2 microg/mL). The antibacterial activity results indicated that both PE and PE-functionalized hydrogels exhibited a potential antimicrobial effects against Escherichia coli, Salmonella typhimurium, Streptococcus mutans, and Candida albicans. The in vitro test cell culture experiments indicated that the cells on the PE-functionalized hydrogels had the greatest viability, adhesion, and spreading of cells. Altogether, these data highlight the interesting effect of propolis bio-functionalization to enhance the biological features of CNF/PVA hydrogel as a functional matrix for biomedical applications. CI - (c) 2023. The Author(s). FAU - Saleh, Safaa AU - Saleh S AD - Department of Physics, Faculty of Science, Al-Azhar University, (Girls Branch), P.O Box 11884, Cairo, Egypt. FAU - Salama, Ahmed AU - Salama A AD - Cellulose and Paper Department, National Research Centre, 33 El-Bohouth St., Dokki, P.O. 12622, Giza, Egypt. FAU - Ali, Amira M AU - Ali AM AD - Department of Physics, Faculty of Science, Al-Azhar University, (Girls Branch), P.O Box 11884, Cairo, Egypt. FAU - Saleh, Ahmed K AU - Saleh AK AD - Cellulose and Paper Department, National Research Centre, 33 El-Bohouth St., Dokki, P.O. 12622, Giza, Egypt. asrk_saleh@yahoo.com. FAU - Elhady, Bothaina Abd AU - Elhady BA AD - Polymers and Pigments Department, National Research Centre, 33 El-Bohouth St., Dokki, P.O. 12622, Giza, Egypt. FAU - Tolba, Emad AU - Tolba E AD - Polymers and Pigments Department, National Research Centre, 33 El-Bohouth St., Dokki, P.O. 12622, Giza, Egypt. LA - eng PT - Journal Article DEP - 20230512 PL - England TA - Sci Rep JT - Scientific reports JID - 101563288 RN - 9009-62-5 (Propolis) RN - 9002-89-5 (Polyvinyl Alcohol) RN - 9004-34-6 (Cellulose) RN - 0 (Plant Extracts) RN - 0 (Hydrogels) SB - IM MH - *Propolis/pharmacology/chemistry MH - Polyvinyl Alcohol/chemistry MH - Cellulose MH - Egypt MH - *Nanofibers MH - Porosity MH - Plant Extracts/chemistry MH - Hydrogels/chemistry PMC - PMC10182032 COIS- The authors declare no competing interests. EDAT- 2023/05/13 15:13 MHDA- 2023/05/15 06:42 PMCR- 2023/05/12 CRDT- 2023/05/12 23:21 PHST- 2022/12/07 00:00 [received] PHST- 2023/05/09 00:00 [accepted] PHST- 2023/05/15 06:42 [medline] PHST- 2023/05/13 15:13 [pubmed] PHST- 2023/05/12 23:21 [entrez] PHST- 2023/05/12 00:00 [pmc-release] AID - 10.1038/s41598-023-34901-6 [pii] AID - 34901 [pii] AID - 10.1038/s41598-023-34901-6 [doi] PST - epublish SO - Sci Rep. 2023 May 12;13(1):7739. doi: 10.1038/s41598-023-34901-6.