Repository of University of Nova Gorica

Show document
A+ | A- | Help | SLO | ENG

Title:Polyphenol, antioxidant and antimicrobial potential of six different white and red wine grape processing leftovers : /
Authors:ID SCI by John Wiley & Sons Ltd (Copyright holder)
ID Trošt, Kajetan, Center za raziskave vina, Univerza v Novi Gorici, Vipava, (Author)
ID Klančnik, Anja, Oddelek za živilsko tehnologijo, Biotehniška fakulteta, Univerza v Ljubljani, Ljubljana, Slovenija (Author)
ID Mozetič Vodopivec, Branka, Center za raziskave vina, Univerza v Novi Gorici, Vipava, Slovenija (Author)
ID Sternad Lemut, Melita, Center za raziskave vina, Univerza v Novi Gorici, Vipava, Slovenija (Author)
ID Jug, Katja, Oddelek za živilsko tehnologijo, Biotehniška fakulteta, Univerza v Ljubljani, Ljubljana, Slovenija (Author)
ID Raspor, Peter, Inštitut za živila, prehrano in zdravje, Fakulteta za vede o zdravju, Univerza na primorskem, Izola, Slovenija (Author)
ID Smole Možina, Sonja, Oddelek za živilsko tehnologijo, Biotehniška fakulteta, Univerza v Ljubljani, Ljubljna, Slovenija (Author)
Files: This document has no files that are freely available to the public. This document may have a physical copy in the library of the organization, check the status via COBISS. Link is opened in a new window
Language:English
Work type:Not categorized
Typology:1.01 - Original Scientific Article
Organization:UNG - University of Nova Gorica
Abstract:BACKGROUND During winemaking, grape polyphenols are only partly extracted, and consequently unexploited. The main aim was to characterise the phenolic content of freeze-dried grape skin and seed (FDSS) extracts obtained from Slovenian and international grape varieties and evaluate their antioxidant, antimicrobial, and anti-adhesive activities. RESULTS FDSS of six Vitis vinifera L. grapevine cultivars from Vipava Valley region (Slovenia) underwent extraction and sonification under different conditions. Flavonols were the predominant content of extracts from white ‘Zelen’ and ‘Sauvignon Blanc’ grape varieties, with strong antimicrobial activities against Gram-negative bacteria. ‘Pinot Noir’ FDSS extracted with 50% aqueous ethanol extraction produced a high phenolic content in the final extract, which was further associated with strong antioxidant and antimicrobial activities against all tested bacteria. Bacterial adhesion to stainless steel surfaces with minimal and maximal surface roughness was significantly inhibited (up to 60%) across a wide FDSS concentration range, with lower concentrations also effective with two types of stainless steel surfaces. CONCLUSION FDSS extracts from winery by-products show interesting phenolic profiles that include flavonols, catechins, anthocyanins, and hydroxycinnamic acids, with yields influenced by grapevine cultivar and extraction conditions. The antioxidant, antimicrobial and anti-adhesive activities of 50% aqueous ethanol ‘Pinot Noir’ FDSS extract reveals potential applications in food, pharmaceutical and cosmetic industries for these bioactive residues.
Keywords:grape skins and seeds, extraction solvents, phenolic profile, antioxidant activity, antimicrobial activity, anti-adhesion activity to stainless steel
Publication version:Author Accepted Manuscript
Year of publishing:2016
Number of pages:42
Numbering:2016, /
PID:20.500.12556/RUNG-2530 New window
COBISS.SI-ID:4470779 New window
DOI:10.1002/jsfa.7981 New window
NUK URN:URN:SI:UNG:REP:NCCJ3DAM
Publication date in RUNG:08.08.2016
Views:5294
Downloads:0
Metadata:XML RDF-CHPDL DC-XML DC-RDF
:
Copy citation
  
Average score:(0 votes)
Your score:Voting is allowed only for logged in users.
Share:Bookmark and Share


Hover the mouse pointer over a document title to show the abstract or click on the title to get all document metadata.

Record is a part of a journal

Title:Journal of the Science of Food and Agriculture
Shortened title:J Sci Food Agric
Publisher:SCI by John Wiley & Sons Ltd
Year of publishing:2016
ISSN:1097-0010
ISBN:/

Secondary language

Language:Undetermined
Title:Polifenolni, antioksidativni in protimikrobni potencial šestih tropin šestih rdečih in belih sort grozdja : /
Abstract:/
Keywords:grozdne peške in kožice, ekstrakcijska topila, fenolni profil, antioksidativna učinkovitost, protimikrobna učinkovitost, proti-adhezivna aktivnost na jeklenih površinah


Back