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https://doi.org/10.31727/m.26.6.3
Starch-based films with incorporated apple peel and chokeberry polyphenols
Lidija Jakobek
orcid.org/0000-0002-4846-327X
; Faculty of Food Technology Osijek, J. J. Strossmayer University of Osijek, Osijek, Croatia
*
Klara Opačak
; Faculty of Food Technology Osijek, J. J. Strossmayer University of Osijek, Osijek, Croatia
Safio Bile Shuke
; Konya Food and Agriculture University, Meram/ Konya, Turky
Petra Matić
; Faculty of Food Technology Osijek, J. J. Strossmayer University of Osijek, Osijek, Croatia
* Dopisni autor.
Sažetak
The aim was to prepare biodegradable starch-based films with active substances, and to examine the influence of temperature (80, 90, 99 °C), plasticizer (glycerol 1, 2, 4 %), and incorporation of phenolic compounds form apple peel and chokeberry on the properties of the films. The hygroscopic nature of glycerol affected the film properties. With the increase in glycerol content the water content, water solubility, and water vapor permeability of films significantly increased, while the swelling degree and hardness significantly decreased (p<0.05). Temperature did not have a significant influence on film properties. Phenolic compounds from apple peel and chokeberry increased the water solubility of films, and the loss of weight in water, in some cases significantly (p<0.05). The increase in hydrophilicity of films after the addition of phenolic compounds could be suggested, which affected the higher solubility and weight loss in the water. However, phenolic compounds decreased the swelling degree of films, in some cases significantly (p<0.05). The denser structure of films with the addition of phenolic compounds can be suggested, which caused the swelling degree to decrease. All films were biodegradable in water (the weight loss 18-38 %). The properties of starch-based films need to be studied and adjusted further for packing foods.
Ključne riječi
active films; biodegradable films; phenolic compounds; Aronia melanocarpa; Malus domestica
Hrčak ID:
323269
URI
Datum izdavanja:
7.12.2024.
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