Interface interactions driven antioxidant properties in olive leaf extract/cellulose nanocrystals/poly(butylene adipate-co-terephthalate) biomaterials

De Cristofaro, Giuseppa Anna (author): Universita degli Studi del Sannio,University of Sannio

Paolucci, Marina (author): Universita degli Studi del Sannio,University of Sannio

Pappalardo, Daniela (author): Universita degli Studi del Sannio,University of Sannio

Pagliarulo, Caterina (author): Universita degli Studi del Sannio,University of Sannio

Lo Re, Giada, 1971 (author): Chalmers tekniska högskola,Chalmers University of Technology

(creator_code:org_t)

2024
2024
English.
In: International Journal of Biological Macromolecules. - 0141-8130 .- 1879-0003. ; 272

Related links:: https://research.cha... (primary) (free); show more...; https://doi.org/10.1...; https://research.cha...; show less...

Abstract Subject headings

Functional packaging represents a new frontier for research on food packaging materials. In this context, adding antioxidant properties to packaging films is of interest. In this study, poly(butylene adipate-co-terephthalate) (PBAT) and olive leaf extract (OLE) have been melt-compounded to obtain novel biomaterials suitable for applications which would benefit from the antioxidant activity. The effect of cellulose nanocrystals (CNC) on the PBAT/OLE system was investigated, considering the interface interactions between PBAT/OLE and OLE/CNC. The biomaterials' physical and antioxidant properties were characterized. Morphological analysis corroborates the full miscibility between OLE and PBAT and that OLE favours CNC dispersion into the polymer matrix. Tensile tests show a stable plasticizer effect of OLE for a month in line with good interface PBAT/OLE interactions. Simulant food tests indicate a delay of OLE release from the 20 wt% OLE-based materials. Antioxidant activity tests prove the antioxidant effect of OLE depending on the released polyphenols, prolonged in the system at 20 wt% of OLE. Fluorescence spectroscopy demonstrates the nature of the non-covalent PBAT/OLE interphase interactions in π-π stacking bonds. The presence of CNC in the biomaterials leads to strong hydrogen bonding interactions between CNC and OLE, accelerating OLE released from the PBAT matrix.

NATURVETENSKAP -- Kemi -- Polymerkemi (hsv//swe)
NATURAL SCIENCES -- Chemical Sciences -- Polymer Chemistry (hsv//eng)
NATURVETENSKAP -- Kemi -- Fysikalisk kemi (hsv//swe)
NATURAL SCIENCES -- Chemical Sciences -- Physical Chemistry (hsv//eng)
TEKNIK OCH TEKNOLOGIER -- Materialteknik -- Textil-, gummi- och polymermaterial (hsv//swe)
ENGINEERING AND TECHNOLOGY -- Materials Engineering -- Textile, Rubber and Polymeric Materials (hsv//eng)

By the author/editor: De Cristofaro, G ...; Paolucci, Marina; Pappalardo, Dani ...; Pagliarulo, Cate ...; Sessini, Valenti ...; Lo Re, Giada, 19 ...

About the subject

NATURAL SCIENCES: NATURAL SCIENCES; and Chemical Science ...; and Polymer Chemistr ...

NATURAL SCIENCES: NATURAL SCIENCES; and Chemical Science ...; and Physical Chemist ...

ENGINEERING AND TECHNOLOGY: ENGINEERING AND ...; and Materials Engine ...; and Textile Rubber a ...

Kungliga biblioteket hanterar dina personuppgifter i enlighet med EU:s dataskyddsförordning (2018), GDPR. Läs mer om hur det funkar här.
Så här hanterar KB dina uppgifter vid användning av denna tjänst.