Encapsulation of biological active phenolic compounds extracted from wine wastes in alginate-chitosan microbeads.

Abstract:

:Grapes (Vitis vinifera) are produced in large amounts worldwide and mostly are used for winemaking. Their untreated wastes are rich in valuable secondary metabolites, such as phenolics. Thus, in this study, white and red wine wastes (Malagouzia and Syrah variety) were investigated for their added value phenolics, which were analysed by high performance liquid chromatography (HPLC) and electrospray ionisation-mass spectrometry (ESI/MS) and subsequently encapsulated in several polymers. Extracts from all wastes gave high amounts of total phenolics (13 ± 2.72-22 ± 2.69 mg g-1) and possessed high antioxidant activity (67-97%). In addition to their significant antibacterial activity against gram-negative and gram-positive bacteria, interesting results were also obtained from their anti-inflammatory and antiplatelet activity, in vitro. Encapsulation of the extracts was selective, leaving out most of sugars and other organic compounds when alginate-chitosan was used. Encapsulation efficiency recorded for all extracts ranged from 55% to 79%. Release studies were also performed in several solutions aiming in their commercial use in food and pharmaceutical industries.

journal_name

J Microencapsul

authors

Moschona A,Liakopoulou-Kyriakides M

doi

10.1080/02652048.2018.1462415

subject

Has Abstract

pub_date

2018-05-01 00:00:00

pages

229-240

issue

3

eissn

0265-2048

issn

1464-5246

journal_volume

35

pub_type

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