The research investigates the potential combination of propolis and chitosan to develop a completely bio-based active food packaging material. Propolis glycolic extract was used as antioxidant and antimicrobial, due to its polyphenols content. Two commercial chitosans with different molecular weights were comparatively used as antimicrobial, wet strength additive substitute and polyphenols retainer. The effects of the addition of carboxymethyl- (CMC) or microfibrillated cellulose (MFC) and two pH values in paper production were investigated for polyphenols retention and paper strength. Chitosan, in replacement of the most commonly used wet strength resin (PAAE), increased polyphenols retention more than 10 times. Paper sheets produced with the highest molecular weight chitosan, at pH 7 and with MFC addition showed the best wet strength (7.4 ± 0.5 Nm/g) and wet resistance (13.3 ± 1.2%). Paper antimicrobial activity was confirmed on thinly sliced raw veal meat, where a decrease of intentionally inoculated L. innocua of around 1 log cycle was achieved in 48 h at 4 °C.
Propolis and chitosan as antimicrobial and polyphenols retainer for the development of paper based active packaging materials / M.S. Rollini, E. Mascheroni, G. Capretti, V. Coma, A. Musatti, L. Piergiovanni. - In: FOOD PACKAGING AND SHELF LIFE. - ISSN 2214-2894. - 14(2017 Dec), pp. 75-82.
Propolis and chitosan as antimicrobial and polyphenols retainer for the development of paper based active packaging materials
M.S. RolliniPrimo
;E. Mascheroni;A. Musatti;L. Piergiovanni
2017
Abstract
The research investigates the potential combination of propolis and chitosan to develop a completely bio-based active food packaging material. Propolis glycolic extract was used as antioxidant and antimicrobial, due to its polyphenols content. Two commercial chitosans with different molecular weights were comparatively used as antimicrobial, wet strength additive substitute and polyphenols retainer. The effects of the addition of carboxymethyl- (CMC) or microfibrillated cellulose (MFC) and two pH values in paper production were investigated for polyphenols retention and paper strength. Chitosan, in replacement of the most commonly used wet strength resin (PAAE), increased polyphenols retention more than 10 times. Paper sheets produced with the highest molecular weight chitosan, at pH 7 and with MFC addition showed the best wet strength (7.4 ± 0.5 Nm/g) and wet resistance (13.3 ± 1.2%). Paper antimicrobial activity was confirmed on thinly sliced raw veal meat, where a decrease of intentionally inoculated L. innocua of around 1 log cycle was achieved in 48 h at 4 °C.File | Dimensione | Formato | |
---|---|---|---|
Final published ahead.pdf
accesso riservato
Tipologia:
Publisher's version/PDF
Dimensione
450.07 kB
Formato
Adobe PDF
|
450.07 kB | Adobe PDF | Visualizza/Apri Richiedi una copia |
1-s2.0-S2214289417300947-main.pdf
accesso riservato
Tipologia:
Publisher's version/PDF
Dimensione
519.11 kB
Formato
Adobe PDF
|
519.11 kB | Adobe PDF | Visualizza/Apri Richiedi una copia |
Pubblicazioni consigliate
I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.