This study explored the effect of aminoacids as non-traditional plasticizers of maltodextrins fast dissolving films. 5% w/w glycine and proline decreased the glass transition temperature (Tg) of maltodextrins from 102.6 ± 2.0 °C to 73.1 ± 1.4 °C and 76.1 ± 0.7 °C, respectively; meanwhile the binary mixture made with lysine had a Tg value of 83.6 ± 2.2 °C. At the same time, all aminoacids increased the ΔCp values. The shift of the thermal data were due to profound effect on the hydrogen bonding as evidenced by ATR-FTIR spectra since the OH stretching and scissoring bands decreased of about 15–26 cm−1. A linear relationship was found (R2 = 0.9334) between HOH scissoring wavenumbers and Tg values. The addition of glycine and proline resulted effective in reducing the elastic modulus (about 50%) and tensile strength (about three times) and, therefore, can be used to increase the film ductility.

Aminoacids as non-traditional plasticizers of maltodextrins fast-dissolving films / F. Selmin, I. Franceschini, I.E. Cupone, P. Minghetti, F. Cilurzo. - In: CARBOHYDRATE POLYMERS. - ISSN 0144-8617. - 115(2015 Jan 22), pp. 613-616. [10.1016/j.carbpol.2014.09.023]

Aminoacids as non-traditional plasticizers of maltodextrins fast-dissolving films

F. Selmin;I. Franceschini;P. Minghetti;F. Cilurzo
2015-01-22

Abstract

This study explored the effect of aminoacids as non-traditional plasticizers of maltodextrins fast dissolving films. 5% w/w glycine and proline decreased the glass transition temperature (Tg) of maltodextrins from 102.6 ± 2.0 °C to 73.1 ± 1.4 °C and 76.1 ± 0.7 °C, respectively; meanwhile the binary mixture made with lysine had a Tg value of 83.6 ± 2.2 °C. At the same time, all aminoacids increased the ΔCp values. The shift of the thermal data were due to profound effect on the hydrogen bonding as evidenced by ATR-FTIR spectra since the OH stretching and scissoring bands decreased of about 15–26 cm−1. A linear relationship was found (R2 = 0.9334) between HOH scissoring wavenumbers and Tg values. The addition of glycine and proline resulted effective in reducing the elastic modulus (about 50%) and tensile strength (about three times) and, therefore, can be used to increase the film ductility.
maltodextrins; plasticization; tensile properties; ast-dissolving films; DSC; ATR-FTIR spectroscopy
Settore CHIM/09 - Farmaceutico Tecnologico Applicativo
set-2014
CARBOHYDRATE POLYMERS
Article (author)
File in questo prodotto:
File Dimensione Formato  
2015 Aminoacids as non-traditional plasticizers of maltodextrins.pdf

non disponibili

415.17 kB Adobe PDF   Visualizza/Apri   Richiedi una copia
Pubblicazioni consigliate

Caricamento pubblicazioni consigliate

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: http://hdl.handle.net/2434/240391
Citazioni
  • ???jsp.display-item.citation.pmc??? 4
  • Scopus 32
  • ???jsp.display-item.citation.isi??? 31
social impact