Isolation of cellulose nanofibers from soybean by-products and their applicability as reinforcement material in biodegradable films

• Grant number: 12/22154-7
• Support Opportunities: Scholarships in Brazil - Post-Doctoral
• Start date: September 01, 2013
• End date: May 19, 2016
• Field of knowledge: Agronomical Sciences - Food Science and Technology - Food Technology
• Principal Investigator: Delia Rita Tapia Blácido
• Grantee: Milena Martelli Tosi
• Host Institution: Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto (FFCLRP). Universidade de São Paulo (USP). Ribeirão Preto , SP, Brazil
• Associated research grant: 09/14610-0 - Use of agro-industrial residues in the elaboration of bioactive films, AP.JP

Abstract

The main aims of the present study are: (i) to extract and characterize cellulose nanofibers from soybean by-products (straw and bean pods) using different pretreatments (chemical, mechanical and enzymatic) and, (ii) to evaluate the use of these nanofibers as potential reinforcement material to biocomposite applications (strengthening protein or starch based films). Initially the soybean byproduct will be ground using mechanical methods and then the nanofibers extracted by chemical (sulfuric acid) and/or enzymatic (laccase and laccase-xylanase) treatments, followed by mechanical treatments to obtained individualized nanofibers (ball milling and high-pressure homogenization). The nanofibers cristallinity will be characterized by x-ray diffraction and the morphology observed by transmission electron microscopy (TEM). The structure of the nanofibers will be investigated by infrared spectroscopy (FT-IR) in order identify any chemical changes due to chemical, enzymatic or mechanical treatments. The influence of the added nanofibers on mechanical properties, thermal stability, hydrophilicity and water vapor permeability, in the films processed, will be evaluated by proper techniques. The morphology of the resultant films will be investigated by scanning electron microscopy (SEM) for a better understanding of the relation between structure-properties. Lignocellulosic composition will be also determined. The present study is inserted in the area of nanobased materials processing and is expected, as a result of this research, to give some contributions to a better use of wastes and renewable resources, largely available in our country. (AU)

Scientific publications

(4)

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

MARTELLI-TOSI, MILENA; MASSON, MARAIANE M.; SILVA, NATALIA C.; ESPOSTO, BRUNO S.; BARROS, TAIS T.; ASSIS, ODILIO B. G.; TAPIA-BLACIDO, DELIA R.. Soybean straw nanocellulose produced by enzymatic or acid treatment as a reinforcing filler in soy protein isolate films. Carbohydrate Polymers, v. 198, p. 61-68, OCT 15 2018. (12/22154-7, 14/02801-3)

MARTELLI-TOSI, MILENA; TORRICILLAS, MARCELA DA SILVA; MARTINS, MARIA ALICE; GARRIDO DE ASSIS, ODILIO BENEDITO; TAPIA-BLACIDO, DELIA RITA. Using Commercial Enzymes to Produce Cellulose Nanofibers from Soybean Straw. Journal of Nanomaterials, v. 2016, p. 10-pg., 2016-01-01. (16/16222-0, 12/22154-7, 14/02432-8)

MARTELLI-TOSI, MILENA; TORRICILLAS, MARCELA DA SILVA; MARTINS, MARIA ALICE; GARRIDO DE ASSIS, ODILIO BENEDITO; TAPIA-BLACIDO, DELIA RITA. Using Commercial Enzymes to Produce Cellulose Nanofibers from Soybean Straw. Journal of Nanomaterials, 2016. (16/16222-0, 12/22154-7, 14/02432-8)

MARTELLI-TOSI, MILENA; ASSIS, ODILIO B. G.; SILVA, NATALIA C.; ESPOSTO, BRUNO S.; MARTINS, MARIA ALICE; TAPIA-BLACIDO, DELIA R.. Chemical treatment and characterization of soybean straw and soybean protein isolate/straw composite films. Carbohydrate Polymers, v. 157, p. 512-520, FEB 10 2017. (12/22154-7)