In the current research, oleogels were prepared by using κ-carrageenan aerogels as template. In particular, hydrogels containing increasing concentration (0.4, 1.0, and 2.0% w/w) of κ-carrageenan were firstly converted into alcoholgel and subsequently dried by using supercritical CO2 to obtain aerogels. The latter were porous and structurally stable materials with high mechanical strength. The polymer content affected the aerogel structure: increasing the initial k-carrageenan concentration a coarser structure with larger polymer aggregates was obtained. However, the aerogel obtained at intermediate polymer concentration resulted the firmest one, probably due to the formation of a less aerated and more isotropic structure. Aerogels demonstrated a reduced capacity of water vapor sorption, remaining glassy and porous at room temperature at relative humidity lower than 60%. Aerogels showed a good capacity of oil absorption. The maximum oil loading capacity (about 80%) was obtained for aerogel containing the highest κ-carrageenan content. Thus, it can be concluded that aerogels based on the structuring of water soluble polymers have potential as material for oil absorption and delivery. © 2017 Elsevier Ltd

Exploitation of κ-carrageenan aerogels as template for edible oleogel preparation.

MANZOCCO, Lara
Primo
;
VALOPPI, Fabio
Secondo
;
CALLIGARIS, Sonia
;
ANDREATTA, Francesco;NICOLI, Maria Cristina
Ultimo
2017-01-01

Abstract

In the current research, oleogels were prepared by using κ-carrageenan aerogels as template. In particular, hydrogels containing increasing concentration (0.4, 1.0, and 2.0% w/w) of κ-carrageenan were firstly converted into alcoholgel and subsequently dried by using supercritical CO2 to obtain aerogels. The latter were porous and structurally stable materials with high mechanical strength. The polymer content affected the aerogel structure: increasing the initial k-carrageenan concentration a coarser structure with larger polymer aggregates was obtained. However, the aerogel obtained at intermediate polymer concentration resulted the firmest one, probably due to the formation of a less aerated and more isotropic structure. Aerogels demonstrated a reduced capacity of water vapor sorption, remaining glassy and porous at room temperature at relative humidity lower than 60%. Aerogels showed a good capacity of oil absorption. The maximum oil loading capacity (about 80%) was obtained for aerogel containing the highest κ-carrageenan content. Thus, it can be concluded that aerogels based on the structuring of water soluble polymers have potential as material for oil absorption and delivery. © 2017 Elsevier Ltd
File in questo prodotto:
File Dimensione Formato  
2017 Exploitation of k-carrageenan aerogels as template for edible oleogel preparation.pdf

non disponibili

Tipologia: Versione Editoriale (PDF)
Licenza: Non pubblico
Dimensione 1 MB
Formato Adobe PDF
1 MB Adobe PDF   Visualizza/Apri   Richiedi una copia
FOODHYD_2017_271_Revision 1_V0.pdf

accesso aperto

Tipologia: Documento in Post-print
Licenza: Creative commons
Dimensione 6.51 MB
Formato Adobe PDF
6.51 MB Adobe PDF Visualizza/Apri

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11390/1105548
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 127
  • ???jsp.display-item.citation.isi??? 99
social impact