| Autor: |
Henao-Díaz, Luz Stella, Cadena-Casanova, Cristian Leonardo, Bolio-López, Gloria Ivette, Veleva, Lucien, Azamar-Barrios, José Antonio, Hernández-Villegas, Manuel Mateo, Córdova-Sánchez, Samuel |
| Předmět: |
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| Zdroj: |
Agro Productividad; jul2021, Vol. 14 Issue 7, p87-95, 9p |
| Abstrakt: |
Objective: Obtaining films from a vegetable biopolymer from the peel (a by-product) of passion fruit (Passiflora edulis) (BPM) and contribute to reduce the environmental pollution generated by the consumption of petroleum-derived plastics. Design/methodology/approach: By acid hydrolysis at four concentrations of citric acid (0, 1, 2, and 3%), pectin was extracted of passion fruit peels, making a paste mixture with glycerol. The obtained biofilms with an approximate 1 mm thickness were characterized by transformed Fourier infrared spectroscopy (FTIR), X-ray diffraction (XRD) and scanning electron microscopy (SEM) with coupled elemental analyzer (EDS). Results: XRD diffractograms revealed that passion fruit bioplastic had a semi-crystalline structure and a calculated crystallinity index of 74.6%. Its value reduced by the half as the citric acid increased concentration, the samples with lower concentration with greater flexibility (1%). FTIR analysis suggested alterations in the BMP structures and a decrease of methoxyl groups in the polymeric chains with the increasing in citric acid content. Limitations/implications: SEM micrographs showed homogeneity in the films, although with some granular irregularities and folding. Findings/conclusions: The increase in citric acid concentration decreased the degree of gelation in the writing of the obtained biofilms, suggested by EDS and FTIR results, with a consequent reduced flexibility of the GMP films. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
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