Εξειδίκευση τύπου :	Άρθρο σε επιστημονικό περιοδικό
Τίτλος:	Optimization of polyphenol extraction from allium ampeloprasum var. porrum through response surface methodology
Δημιουργός/Συγγραφέας:	Strati I.F. Kostomitsopoulos G. Lytras F. [EL] Ζουμπουλάκης, Παναγιώτης[EN] Zoumpoulakis, Panagiotis Proestos C. Sinanoglou V.J.
Εκδότης:	MDPI Multidisciplinary Digital Publishing Institute
Ημερομηνία:	2018
Γλώσσα:	Αγγλικά
ISSN:	2304-8158
DOI:	10.3390/foods7100162
Περίληψη:	Allium ampeloprasum var. porrum has been recognized as a rich source of secondary metabolites, including phenolic acids, flavonoids and flavonoid polymers (proanthocyanidins or condensed tannins), with related health benefits. Both parts of Allium ampeloprasum var. porrum (white bulb and pseudostem) are traditionally consumed either as a vegetable or as a condiment in many Mediterranean countries. The aim of the present study was to optimize the extraction conditions of polyphenols from white leek stem and green leek leaf by implementing a Box-Behnken design (BBD). The optimization considered basic factors affecting extraction efficiency, including extraction time, solvent to plant material ratio and solvent mixture composition. Maximum polyphenol yield was achieved at an extraction time of 80 and 100 min for white leek stem and green leek leaf extracts respectively, solvent to plant material ratio of 5:1 (v/w) and methanol to water ratio of 40:60 (v/v), for both leek extracts. Interestingly, higher total phenolic content was found in green leek leaf extracts compared to white leek stem extracts, due to a possible relationship between polyphenol production and sunlight radiation. High correlation values were also observed between total phenolic content and antioxidant-antiradical activity of optimized leek extracts.
Τίτλος πηγής δημοσίευσης:	Foods
Τόμος/Κεφάλαιο:	7
Τεύχος:	10
Θεματική Κατηγορία:	[EL] Φαρμακευτική χημεία[EN] Pharmaceutical chemistry [EL] Βιοχημεία[EN] Biochemistry
Λέξεις-Κλειδιά:	Allium ampeloprasum Antioxidant activity Box-Behnken design Extraction Leek Optimization Polyphenols
Αξιολόγηση από ομότιμους (peer reviewed):	Ναι
Κάτοχος πνευματικών δικαιωμάτων:	© 2018 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 (http://creativecommons.org/licenses/by/4.0/).
Εμφανίζεται στις συλλογές:	Ινστιτούτο Χημικής Βιολογίας - Επιστημονικό έργο