02599naa a2200217 a 450000100080000000500110000800800410001910000210006024501250008126000090020652018780021565300190209365300180211265300250213070000180215570000170217370000160219070000200220670000210222677301340224711293312019-12-18       2019    bl uuuu     u00u1 u    #d1 aSGANZERLA, W. G.  aBioactive and antimicrobial nanocomposite packaging incorporated with green silver nanoparticles.h[electronic resource]  c2019  aThe development of a new nanomaterial incorporated in a biodegradable polymeric matrix, brings as a new perspective to active packaging materials to the food conservation, extending the products shelf life. In this work, poly (oxyethylene) (PEO) films containing biosynthesized silver nanoparticles (AgNPs) were developed using Acca sellowiana extract, and the antioxidant, and antimicrobial properties of the films were evaluated to the production of a new food packaging. Green AgNPs were synthetized using 1 mL of AgNO3 0.5 mmol/L and 25 mL of macerated extract (1:10, w/v) of Acca sellowiana leaves. Green AgNPs were analyzed by UVVis and TEM analysis. After this, nanocomposite packaging was prepared with 6 g of PEO, mixed with 14 mL of Acca sellowiana Ag-extracts (MA-AgNPs-film) and without silver nanoparticles (MA-film). A control film was also prepared just with PEO (PEO-control). The solution was placed in petri dishes and oven dried at 35?? C for 3 days. Total Phenolic Compounds (TPC, mg GAE/g), antioxidant capacity by DPPH assay (mg TEAC/g), and antimicrobial activity (well-diffusion) against Escherichia coli and Staphylococcus Aureus was determined in the nanocomposite packaging produced. The results demonstrate a non-significant difference to the phenolic content to MA-film (21.76 ?? 1.80 mg GAE/g) and MA-AgNPs-film (19.61 ?? 2.00 mg GAE/g). However, MA-film presented a higher (p0.05) antioxidant capacity by DPPH assay (44.69 ?? 1.05 mg TEAC/g). Films containing silver nanoparticles (MA-AgNPs-film) presented antimicrobial activity against Escherichia coli (5.33 ?? 1.57 mm) and Staphylococcus Aureus (4.33 ?? 0.57 mm), demonstrating that silver nanoparticles present antimicrobial activity. Thus, in the current work we developed a bioactive and antimicrobial packaging containing silver nanoparticles, with high potential to food application.  aFood packaging  aNanocomposite  aSilver nanoparticles1 aHANSEN, C. M.1 aCOSTA, M. D.1 aROSA, C. G.1 aVEECK, A. P. L.1 aSANTOS, M. R. N.  tIn: ENCONTRO REGIONAL SUL DE CI??NCIA E TECNOLOGIA DE ALIMENTOS, 15., 2019, Curitiba . Resumos... Curitiba: PUCPRess, 2019. p. 27