Production of bioactive films of carboxymethyl cellulose enriched with green coffee oil and its residues

Carboxymethyl cellulose (CMC)-based films were developed by incorporating green coffee oil (GCO) obtained by cold pressing and hydroalcoholic extracts of its residues. The effect of cake (CE) and sediment extracts (SE) in different proportions (20–40%) and GCO on chemical, morphological, physical, m...

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Bibliographic Details
Published in:International journal of biological macromolecules 2020-03, Vol.146, p.730-738
Main Authors: Lombo Vidal, Oscar, Tsukui, Anna, Garrett, Rafael, Miguez Rocha-Leão, Maria Helena, Piler Carvalho, Carlos Wanderlei, Pereira Freitas, Suely, Moraes de Rezende, Claudia, Simões Larraz Ferreira, Mariana
Format: Article
Language:English
Subjects:
Active packaging
Antioxidant activity
Antioxidants - analysis
Biodegradable films
Carboxymethyl cellulose
Carboxymethylcellulose Sodium - chemistry
Chemical Phenomena
Chromans - chemistry
Coffea - chemistry
Coffee - chemistry
Color
Food Packaging
Green coffee oil
Permeability
Phenol - analysis
Plant Extracts - analysis
Spectroscopy, Fourier Transform Infrared
Steam
Tensile Strength
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Summary:Carboxymethyl cellulose (CMC)-based films were developed by incorporating green coffee oil (GCO) obtained by cold pressing and hydroalcoholic extracts of its residues. The effect of cake (CE) and sediment extracts (SE) in different proportions (20–40%) and GCO on chemical, morphological, physical, mechanical, optical, and antioxidant properties of the films was investigated. Eight fatty acids and four major phenolic compounds were identified by High-Resolution Direct-Infusion Mass Spectrometry in GCO and residue extracts. FTIR indicated interactions among CMC, phenolic compounds, and fatty acids. Films enriched with residue extracts presented heterogeneous microstructure. The tensile strength of the films decreased from 58 to 3 MPa with the extracts concentration, while elongation increased from 28 to 156% (p 
ISSN:0141-8130
1879-0003
DOI:10.1016/j.ijbiomac.2019.10.123