1. Αποθετήριο Παραδοτέων Υποτρόφων Δράσεων ΕΣΠΑ Τριτοβάθμιας Εκπαίδευσης 2017-2023
2. Όλο το Αποθετήριο
3. Ερευνητικές ομάδες

Τύπος:	Άρθρο σε επιστημονικό περιοδικό
Τίτλος:	Selenium nanoparticles-loaded chitosan microspheres as a dietary selenium source in rabbits: impact on meat selenium content and oxidative stability
Συγγραφέας:	[EL] Γιαννόπουλος, Σπυρίδων[EN] Yannopoulos, Spyros
Μέλος ερευνητικής ομάδας:	[EL] Φορτάτος, Ευστάθιος[EN] Fortatos, Efstathios [EL] Γιαμούρη, Ελισάβετ[EN] Giamouri, Elisavet [EL] Παππάς, Αθανάσιος[EN] Pappas, Athanasios
Επικεφαλής ερευνητικής ομάδας:	[EL] Παπαδομιχελάκης, Γεώργιος[EN] Papadomichelakis, Georgios
Ημερομηνία:	25/10/2021
Περίληψη:	Dietary selenium (Se) supplementation is a viable strategy to enhance the antioxidant defense. The commonly-used Se sources (sodium selenite and selenium-yeast) have a narrow margin between beneficial and toxic effects. Se nanoparticles stabilized in chitosan microspheres (CS-SeNP) are well established for their low toxicity, but their bioavailability and antioxidant potential has not been extensively investigated in livestock feeding. Our objectives were: a) to synthesize and characterize the properties of CS-SeNP and b) to compare the effects of CS-SeNP as dietary selenium source with those of sodium selenite and selenium-yeast on meat selenium concentration and oxidative stability in growing rabbits. The CS-SeNP were synthesized using a chemical reducing method and were characterized by dynamic light scattering, X-ray diffraction and X-ray photoelectron spectroscopy. Four experimental diets were offered to 96 rabbits; one control (C) with no added Se, and 3 diets supplemented with 0.4 mg Se/kg either from sodium selenite + selenium-yeast (1:1 ratio; T1), selenium-yeast and CS-SeNPs (1:1 ratio; T2) or CS-SeNP alone (T3). Feed intake, weight gain and feed conversion ratio were monitored throughout the trial. At the end of the trial, 12 rabbits per diet were sacrificed and meat samples were collected. Meat fatty acid composition was determined by gas chromatography. Meat Se content and oxidative stability were determined by hydride (vapor) generation atomic absorption spectroscopy and iron-induced lipid oxidation, respectively. Spherical monodispersed CS-SeNPs of 80.5 ± 20 nm average diameter were obtained. The CS-SeNP were exclusively composed of elemental Se and were totally encapsulated in chitosan, as indicated by the X-ray diffraction and X-ray photoelectron spectroscopy surveys, respectively. Growth performance was not affected by the dietary selenium addition and differences were observed between the dietary selenium sources. Meat selenium content and oxidative stability was similar in T1, T2 and T3 rabbits, but significantly higher (P < 0.05) when compared to C rabbits. In conclusion, the selenium from CS-SeNP enriches meat with selenium and enhances meat oxidative stability in a manner similar to the commonly-used inorganic and organic forms. Given their well-established low toxicity, CS-SeNP have a very good potential as dietary Se source and should be further studied
Γλώσσα:	Αγγλικά
Σελίδες:	12
DOI:	10.31080/ASVS.2021.03.0237
ISSN:	2582-3183
Θεματική κατηγορία:	[EL] Επιστήμη ζωικής παραγωγής[EN] Dairy and Animal Science
Λέξεις-κλειδιά:	Meat; Oxidative Stability; Selenium; Selenium Nanoparticles-loaded Chitosan Microspheres; Selenium-yeast; Sodium Selenite
Κάτοχος πνευματικών δικαιωμάτων:	© The Author(s) 2021
Σχετίζεται με:	Selenium nanoparticles-loaded chitosan microspheres as a dietary selenium source in rabbits: impact on meat selenium concentration and oxidative stability
Ηλεκτρονική διεύθυνση του τεκμηρίου στον εκδότη:	https://actascientific.com/ASVS/ASVS-03-0237.php
Ηλεκτρονική διεύθυνση περιοδικού:	https://actascientific.com/ASVS-Article-Inpress.php
Τίτλος πηγής δημοσίευσης:	Acta Scientific Veterinary Sciences
Τεύχος:	11
Τόμος:	3
Σελίδες τεκμηρίου (στην πηγή):	45-56
Σημειώσεις:	This Research Project is co-financed by Greece and the European Union (European Social Fund) through the Operational Program «Human Resources Development, Education and Lifelong Learning 2014-2020» and the Program encoded EDBM103, titled “Support for researchers with an emphasis on young researchers-cycle B '”, in the context of the project “Innovative nanomaterials in animal feeding: evaluation of selenium nanoparticles-loaded chitosan microspheres on meat quality” (MIS 5048474)
Εμφανίζεται στις συλλογές:	Ερευνητικές ομάδες