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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Soybean straw nanocellulose produced by enzymatic or acid treatment as a reinforcing filler in soy protein isolate films

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Author(s):
Martelli-Tosi, Milena [1] ; Masson, Maraiane M. [2] ; Silva, Natalia C. [2] ; Esposto, Bruno S. [2] ; Barros, Tais T. [3] ; Assis, Odilio B. G. [3] ; Tapia-Blacido, Delia R. [2]
Total Authors: 7
Affiliation:
[1] Univ Sao Paulo, Fac Zootecnia & Engn Alimentos, Dept Engn Alimentos, Rua Duque de Caxias Norte 225, BR-13635900 Pirassununga, SP - Brazil
[2] Univ Sao Paulo, Fac Filosofia Ciencias & Letras Ribeirao Preto, Dept Quim, Bandeirantes Ave 3900, BR-14040901 Ribeirao Preto, SP - Brazil
[3] Embrapa Instrumentacao, Natl Nanotechnol Lab Agr LNNA, Rua 15 Novembro, 1452, BR-13561206 Sao Carlos, SP - Brazil
Total Affiliations: 3
Document type: Journal article
Source: Carbohydrate Polymers; v. 198, p. 61-68, OCT 15 2018.
Web of Science Citations: 13
Abstract

This work is a comparative study of the application of mercerized soybean straw (MSS) and nanocellulose produced by acid (CNCs) or enzymatic hydrolysis (CNFs) as reinforcing fillers in soy protein isolate (SPI) films. CNCs presented average dimensions of about 10 nm-thick and 300 nm-long with a crystallinity index of 57%, whereas CNFs have similar diameters, though with greater lengths (> 1 mu m), lower crystallinity index (50%) and greater thermal stability. Incorporation of 5% of CNCs and CNFs (g/100 g of SPI) improved the SPI film tensile strength by 38 and 48% respectively, and decreased the SPI film elongation at break when compared to control films. The SPI-CNC films showed the lowest values for solubility, probably due to their higher crystallinity (63%). On the other hand, the water vapor permeability was solely reduced with CNF addition, which can be attributed to their higher aspect ratio (length/diameter) and a better incorporation into the protein matrix. (AU)

FAPESP's process: 12/22154-7 - Isolation of cellulose nanofibers from soybean by-products and their applicability as reinforcement material in biodegradable films
Grantee:Milena Martelli Tosi
Support Opportunities: Scholarships in Brazil - Post-Doctoral
FAPESP's process: 14/02801-3 - Production of cellulose nanofibers from soybean by-products by chemical hydrolysis
Grantee:Maraiane Mantoani Masson
Support Opportunities: Scholarships in Brazil - Scientific Initiation