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Open AccessArticle

Recovery of Bioactive Compounds from Jaboticaba Peels and Application into Zein Ultrafine Fibers Produced by Electrospinning

1
Engineering Graduate Program, Federal University of Pampa, 1650 Maria Anunciação Gomes de Godoy Avenue, 96413-172 Bagé, Brazil
2
Department of Agroindustrial Science and Technology, Federal University of Pelotas, 96010-900 Pelotas, Brazil
3
Graduate Program in Science and Engineering of Materials, Federal University of Pampa, 1650 Maria Anunciação Gomes de Godoy Avenue, 96413-172 Bagé, Brazil
4
Chemical Engineering, Federal University of Pampa, 1650 Maria Anunciação Gomes Godoy Avenue, 96413-172 Bagé, Brazil
*
Author to whom correspondence should be addressed.
Polymers 2020, 12(12), 2916; https://doi.org/10.3390/polym12122916
Received: 9 August 2020 / Revised: 1 September 2020 / Accepted: 1 September 2020 / Published: 5 December 2020
(This article belongs to the Special Issue Natural Compounds for Natural Polymers II)
This work focused on the recovery bioactive compounds from jaboticaba peels and to develop ultrafine fibers from zein incorporated with the jaboticaba extract by electrospinning technique. Jaboticaba peel extracts (JPE) were obtained by maceration according a central composite rotational design (CCDR) and characterized with respect to total phenolic content (TP), antioxidant activity (AA) and total anthocyanin (TA). The optimal condition for the extraction was obtained using a desirability function in order to maximize the presence of bioactive compounds. Under these conditions the amount of cyanidin-3-glucoside (Cn-3-Glu) and the antimicrobial inhibition (AI) of E. coli were evaluated. Ultrafine fibers were obtained by electrospinning technique using zein in an aqueous ethanol as solvent and freeze-dried JPE at different concentrations (1.7% and 3.3%) to produce a composite membrane. The apparent viscosity and electrical conductivity of the polymer solutions, as well as the morphology, thermal stability and functional groups of the ultrafine fibers, were evaluated. The optimal conditions for extraction were 88 °C and pH 1. Under these conditions, a high amount of Cn-3-Glu was obtained (718.12 mg 100 g−1), along with 22.2% antimicrobial inhibition against E. coli. The addition of JPE into composite membranes did not affect the morphology of fibers, which presented a homogeneous and continuous format. Therefore, fibers containing JPE showed interesting characteristics for the food packaging industry. View Full-Text
Keywords: phenolic compounds; antioxidant; antimicrobial; active packaging phenolic compounds; antioxidant; antimicrobial; active packaging
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MDPI and ACS Style

Avila, L.B.; Fontes, M.R.V.; Zavareze, E.d.R.; Moraes, C.C.; Morais, M.M.; Rosa, G.S.d. Recovery of Bioactive Compounds from Jaboticaba Peels and Application into Zein Ultrafine Fibers Produced by Electrospinning. Polymers 2020, 12, 2916. https://doi.org/10.3390/polym12122916

AMA Style

Avila LB, Fontes MRV, Zavareze EdR, Moraes CC, Morais MM, Rosa GSd. Recovery of Bioactive Compounds from Jaboticaba Peels and Application into Zein Ultrafine Fibers Produced by Electrospinning. Polymers. 2020; 12(12):2916. https://doi.org/10.3390/polym12122916

Chicago/Turabian Style

Avila, Luisa B.; Fontes, Milena R.V.; Zavareze, Elessandra d.R.; Moraes, Caroline C.; Morais, Marcilio M.; Rosa, Gabriela S.d. 2020. "Recovery of Bioactive Compounds from Jaboticaba Peels and Application into Zein Ultrafine Fibers Produced by Electrospinning" Polymers 12, no. 12: 2916. https://doi.org/10.3390/polym12122916

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