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Development of biodegradable films using sunflower protein isolates and bacterial nanocellulose as innovative food packaging materials for fresh fruit preservation.
Efthymiou, Maria-Nefeli; Tsouko, Erminta; Papagiannopoulos, Aristeidis; Athanasoulia, Ioanna-Georgia; Georgiadou, Maria; Pispas, Stergios; Briassoulis, Demetres; Tsironi, Theofania; Koutinas, Apostolis.
Afiliação
  • Efthymiou MN; Department of Food Science and Human Nutrition, Agricultural University of Athens, Iera Odos 75, 11855, Athens, Greece.
  • Tsouko E; Department of Food Science and Human Nutrition, Agricultural University of Athens, Iera Odos 75, 11855, Athens, Greece. ermidatsouko@aua.gr.
  • Papagiannopoulos A; Theoretical and Physical Chemistry Institute, National Hellenic Research Foundation, 48 Vassileos Constantinou Ave., 11635, Athens, Greece.
  • Athanasoulia IG; Department of Natural Resources and Agricultural Engineering, Agricultural University of Athens, 11855, Athens, Greece.
  • Georgiadou M; Department of Food Science and Human Nutrition, Agricultural University of Athens, Iera Odos 75, 11855, Athens, Greece.
  • Pispas S; Theoretical and Physical Chemistry Institute, National Hellenic Research Foundation, 48 Vassileos Constantinou Ave., 11635, Athens, Greece.
  • Briassoulis D; Department of Natural Resources and Agricultural Engineering, Agricultural University of Athens, 11855, Athens, Greece.
  • Tsironi T; Department of Food Science and Human Nutrition, Agricultural University of Athens, Iera Odos 75, 11855, Athens, Greece.
  • Koutinas A; Department of Food Science and Human Nutrition, Agricultural University of Athens, Iera Odos 75, 11855, Athens, Greece. akoutinas@aua.gr.
Sci Rep ; 12(1): 6935, 2022 04 28.
Article em En | MEDLINE | ID: mdl-35484184
This study presents the valorization of side streams from the sunflower-based biodiesel industry for the production of bio-based and biodegradable food packaging following circular economy principles. Bacterial cellulose (BC) was produced via fermentation in 6 L static tray bioreactors using nutrient-rich supplements derived from the enzymatic hydrolysis of sunflower meal (SFM) combined with crude glycerol as carbon source. Novel biofilms were produced using either matrices of protein isolates extracted from sunflower meal (SFMPI) alone or SFMPI matrices reinforced with nanocellulose biofillers of commercial or bacterial origin. Acid hydrolysis was employed for ex-situ modification of BC to nanostructures (56 nm). The biofilms reinforced with bacterial nanocellulose structures (SFMPI-BNC) showed 64.5% higher tensile strength, 75.5% higher Young's modulus, 131.5% higher elongation at break, 32.5% lower water solubility and 14.1% lower water vapor permeability than the biofilms produced only with SFMPI. The biofilms were evaluated on fresh strawberries packaging showing that the SFMPI-BNC-based films lead to effective preservation at 10 °C considering microbial growth and physicochemical profile (weight loss, chemical characterization, color, firmness and respiration activity). The SFMPI-BNC-based films could be applied in fresh fruit packaging applications.
Assuntos

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Embalagem de Alimentos / Helianthus Idioma: En Revista: Sci Rep Ano de publicação: 2022 Tipo de documento: Article País de afiliação: Grécia

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Embalagem de Alimentos / Helianthus Idioma: En Revista: Sci Rep Ano de publicação: 2022 Tipo de documento: Article País de afiliação: Grécia