Εξειδίκευση τύπου :	Άρθρο σε επιστημονικό περιοδικό
Τίτλος:	Natural Antioxidant-Loaded Nanoemulsions for Sun Protection Enhancement
Δημιουργός/Συγγραφέας:	Galani, Eleni Galatis, Dimitrios Tzoka, Kyriaki [EL] Παπαδημητρίου, Βασιλική[EN] Papadimitriou, Vassiliki [EL] Σωτηρούδης, Θεόδωρος Γ.[EN] Sotiroudis, Theodore G. Bonos, Antonios [EL] Ξενάκης, Αριστοτέλης[EN] Xenakis, Aristotelis Chatzidaki, Maria D.
Ημερομηνία:	2023
Γλώσσα:	Αγγλικά
ISSN:	2079-9284
DOI:	10.3390/cosmetics10040102
Περίληψη:	The aim of this study was to formulate nanodispersions to encapsulate antioxidants extracted from olive mill wastewater (OMW) and phycocyanin extracted from Spirulina maxima to act as enhancers for the skin’s protection against UV radiation. For this purpose, two water-in-oil nanoemulsions were prepared using a low-energy homogenization method. Both systems were based on isopropyl myristate as the continuous phase, while water or a mixture of glycerol and water was used as the dispersed phase. Then, antioxidants extracted from OMW and phycocyanin from Spirulina maxima were encapsulated in the water core of the nanoemulsions. The empty and antioxidant-loaded systems were then structurally studied using dynamic light scattering for the detection of their droplet size and stability over time. Electron paramagnetic resonance (EPR) spectroscopy using adequate probes was applied for the characterization of the surfactants’ monolayer in the presence and absence of antioxidants. It was found that the mean droplet diameter of the emulsions was 200 nm. The nanoemulsions remained stable for over 2 months. The encapsulated antioxidants were assessed for their scavenging activity of a model stable radical by applying EPR spectroscopy. It was found that the loaded systems exhibited an increased antioxidant capacity compared with the empty ones. Finally, the most stable system was added to commercial sunscreen lotions and the overall sun protection factor (SPF) was assessed. The sunscreen lotions that contained the nanoemulsions loaded with OMW extracts or phycocyanin showed an increase in their SPF value.
Τίτλος πηγής δημοσίευσης:	Cosmetics
Τόμος/Κεφάλαιο:	10
Τεύχος:	4
Θεματική Κατηγορία:	[EL] Βιοτεχνολογία[EN] Biotechnology [EL] Χημική τεχνολογία[EN] Chemical technolgy [EL] Βιοχημεία[EN] Biochemistry [EL] Νανοτεχνολογία[EN] Nanotechnology [EL] Φασματοσκοπία[EN] Spectroscopy
Λέξεις-Κλειδιά:	Nanoemulsions Antioxidants Cosmetics Spirulina maxima Olive mill wastewater Sun protection factor
EU Grant:	RESEARCH–CREATE–INNOVATE
EU Grant identifier:	Τ2ΕΔΚ_03640
Κάτοχος πνευματικών δικαιωμάτων:	© 2023 by the authors. Licensee MDPI, Basel, Switzerland.
Όροι και προϋποθέσεις δικαιωμάτων:	This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https:// creativecommons.org/licenses/by/ 4.0/).
Ηλεκτρονική διεύθυνση στον εκδότη (link):	https://doi.org/10.3390/cosmetics10040102
Εμφανίζεται στις συλλογές:	Ινστιτούτο Χημικής Βιολογίας - Επιστημονικό έργο