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Erschienen in: Cellulose 2/2018

04.01.2018 | Original Paper

Controlled release of carvacrol and curcumin: bio-based food packaging by synergism action of TEMPO-oxidized cellulose nanocrystals and cyclodextrin

verfasst von: Daniele Oliveira de Castro, Nicolas Tabary, Bernard Martel, Alessandro Gandini, Naceur Belgacem, Julien Bras

Erschienen in: Cellulose | Ausgabe 2/2018

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Abstract

Oxidized cellulose nanocrystals with sodium carboxylate groups (TOCNC-COONa) and with free carboxyl groups (TOCN-COOH) were prepared and then chemically modified with beta-cyclodextrin (βCD) and hydroxypropyl-beta-cyclodextrin (HPβCD) to prepare materials able to load and release antibacterial molecules over a prolonged period of time. The materials were characterized by infrared spectroscopy, and the CD content of modified TOCNCs determined by phenolphthalein colorimetry. The extent of grafting was also assessed by QCM-D and microscopy was used to ascertain and compare the morphology of both TOCNC-COONa/HPβCD and TOCNC-COOH/HPβCD. Then, carvacrol and curcumin were entrapped by the attached HPβCD and their prolonged release confirmed, as compared to neat material. The combined effects of HPβCD and carvacrol on the antimicrobial properties of TOCNC-COOH films were finally evaluated.

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Literatur
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Metadaten
Titel
Controlled release of carvacrol and curcumin: bio-based food packaging by synergism action of TEMPO-oxidized cellulose nanocrystals and cyclodextrin
verfasst von
Daniele Oliveira de Castro
Nicolas Tabary
Bernard Martel
Alessandro Gandini
Naceur Belgacem
Julien Bras
Publikationsdatum
04.01.2018
Verlag
Springer Netherlands
Erschienen in
Cellulose / Ausgabe 2/2018
Print ISSN: 0969-0239
Elektronische ISSN: 1572-882X
DOI
https://doi.org/10.1007/s10570-017-1646-6

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