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Article

A Comparative Analysis on the Effect of Variety of Grape Pomace Extracts on the Ice-Templated 3D Cryogel Features

Petru Poni Institute of Macromolecular Chemistry, Grigore Ghica Voda Alley 41A, 700487 Iasi, Romania
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Academic Editors: Dmitriy A. Berillo and Pavel Gurikov
Received: 30 May 2021 / Revised: 19 June 2021 / Accepted: 20 June 2021 / Published: 23 June 2021
(This article belongs to the Special Issue Advances in Cryogels)
Nowadays, there is a growing interest in developing functional packaging materials from renewable resources containing bioactive compounds (such as polyphenols) in order to reduce the use of petroleum-based plastics and their impact on the environment. In this regard, the effect of a variety and concentration of grape pomace extracts (Feteasca Neagra or Merlot) incorporated within ice-templated 3D xanthan-based composites was evaluated by considering their water content, surface and texture properties, radical scavenging and microbiological activities. The embedding of Feteasca Neagra or Merlot grape pomace extracts was studied by static water swelling and contact angle measurements, and SEM, EDX, and TGA analyses. The water contact angle results showed an increase in the surface hydrophobicity of the extract-loaded cryogels with an increase in extract content from 10 to 40 v/v%. SEM micrographs indicated that the entrapment of grape pomace extracts affected the morphology of the pore walls and reduced the pore sizes. The antioxidant activity of grape pomace extract-loaded composite cryogels was closely related to the total phenolic content of grape variety and to their concentration into matrices. The highly hydrophobic character of composite cryogels containing Merlot grape pomace extract and their remarkable antimicrobial activity indicates a great potential of these materials for food packaging applications. View Full-Text
Keywords: grape pomace extract; Feteasca Neagra and Merlot grape variety; 3D xanthan-based composites; surface properties; radical scavenging activity; microbiological features grape pomace extract; Feteasca Neagra and Merlot grape variety; 3D xanthan-based composites; surface properties; radical scavenging activity; microbiological features
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MDPI and ACS Style

Raschip, I.E.; Fifere, N.; Dinu, M.V. A Comparative Analysis on the Effect of Variety of Grape Pomace Extracts on the Ice-Templated 3D Cryogel Features. Gels 2021, 7, 76. https://doi.org/10.3390/gels7030076

AMA Style

Raschip IE, Fifere N, Dinu MV. A Comparative Analysis on the Effect of Variety of Grape Pomace Extracts on the Ice-Templated 3D Cryogel Features. Gels. 2021; 7(3):76. https://doi.org/10.3390/gels7030076

Chicago/Turabian Style

Raschip, Irina Elena, Nicusor Fifere, and Maria Valentina Dinu. 2021. "A Comparative Analysis on the Effect of Variety of Grape Pomace Extracts on the Ice-Templated 3D Cryogel Features" Gels 7, no. 3: 76. https://doi.org/10.3390/gels7030076

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