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Hydroxytyrosol and Oleuropein-Enriched Extracts Obtained from Olive Oil Wastes and By-Products as Active Antioxidant Ingredients for Poly (Vinyl Alcohol)-Based Films
- Source :
- Molecules, Volume 26, Issue 7, Molecules, Vol 26, Iss 2104, p 2104 (2021)
- Publication Year :
- 2021
- Publisher :
- MDPI AG, 2021.
-
Abstract
- Oxidative stability of food is one of the most important parameters affecting integrity and consequently nutritional properties of dietary constituents. Antioxidants are widely used to avoid deterioration during transformation, packaging, and storage of food. In this paper, novel poly (vinyl alcohol) (PVA)-based films were prepared by solvent casting method adding an hydroxytyrosol-enriched extract (HTyrE) or an oleuropein-enriched extract (OleE) in different percentages (5, 10 and 20% w/w) and a combination of both at 5% w/w. Both extracts were obtained from olive oil wastes and by-products using a sustainable process based on membrane technologies. Qualitative and quantitative analysis of each sample carried out by high performance liquid chromatography (HPLC) and nuclear resonance magnetic spectroscopy (NMR) proved that the main components were hydroxytyrosol (HTyr) and oleuropein (Ole), respectively, two well-known antioxidant bioactive compounds found in Olea europaea L. All novel formulations were characterized investigating their morphological, optical and antioxidant properties. The promising performances suggest a potential use in active food packaging to preserve oxidative-sensitive food products. Moreover, this research represents a valuable example of reuse and valorization of agro-industrial wastes and by-products according to the circular economy model.
- Subjects :
- Antioxidant
Proton Magnetic Resonance Spectroscopy
medicine.medical_treatment
Active packaging
antioxidant activity
Pharmaceutical Science
02 engineering and technology
agro-industrial wastes and by-products
High-performance liquid chromatography
Antioxidants
Analytical Chemistry
chemistry.chemical_compound
active packaging
Drug Discovery
oleuropein-enriched extract
Food science
Olea europaea L
Calorimetry, Differential Scanning
biology
poly (vinyl alcohol)
Free Radical Scavengers
04 agricultural and veterinary sciences
Phenylethyl Alcohol
021001 nanoscience & nanotechnology
040401 food science
hydroxytyrosol-enriched extract
Food packaging
Chemistry (miscellaneous)
Olea
Thermogravimetry
Molecular Medicine
0210 nano-technology
hydroxytyrosol
Vinyl alcohol
Iridoid Glucosides
Article
lcsh:QD241-441
0404 agricultural biotechnology
lcsh:Organic chemistry
Phenols
Oleuropein
medicine
Physical and Theoretical Chemistry
Olive Oil
Waste Products
Plant Extracts
green chemistry
circular economy
Organic Chemistry
biology.organism_classification
chemistry
Polyvinyl Alcohol
oleuropein
Hydroxytyrosol
Subjects
Details
- ISSN :
- 14203049
- Volume :
- 26
- Database :
- OpenAIRE
- Journal :
- Molecules
- Accession number :
- edsair.doi.dedup.....ececb1050ca8ba0e1cf4d4932a6571e2