Eco-friendly gelatin films with rosin-grafted cellulose nanocrystals for antimicrobial packaging

被引：71

作者：

Leite, Liliane S. F. ^{[1
,2
,5
]}

Bilatto, Stanley ^{[2
]}

Paschoalin, Rafaella T. ^{[3
]}

Soares, Andrey C. ^{[2
]}

Moreira, Francys K., V ^{[4
]}

Oliveira, Osvaldo N., Jr. ^{[3
]}

Mattoso, Luiz H. C. ^{[1
,2
]}

Bras, Julien ^{[5
,6
]}

机构：

[1] Univ Fed Sao Carlos, Grad Program Mat Sci & Engn PEGCEM, BR-13565905 Sao Carlos, Brazil

[2] Embrapa Instrumentacao, Natl Nanotechnol Lab Agribusiness, XV Novembro St 1452, BR-13560979 Sao Carlos, Brazil

[3] Univ Sao Paulo, Sao Carlos Inst Phys, BR-13560970 Sao Carlos, Brazil

[4] Univ Fed Sao Carlos, Dept Mat Engn, Rod Washington Luis,Km 235, BR-13565905 Sao Carlos, SP, Brazil

[5] Univ Grenoble Alpes, CNRS, Grenoble INP, LGP2, F-38400 Grenoble, France

[6] Nestle Res Ctr, CH-1000 Lausanne, Switzerland

来源：

INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES | 2020年 / 165卷

基金：

巴西圣保罗研究基金会;

关键词：

Gelatin; Rosin; Cellulose nanocrystal; Antimicrobial properties; Food packaging; FISH GELATIN; EDIBLE FILMS; FOOD; FUNCTIONALIZATION; NANOCOMPOSITES; NANOCELLULOSE; COATINGS;

D O I：

10.1016/j.ijbiomac.2020.10.189

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

We report on gelatin films incorporating rosin-grafted cellulose nanocrystals (r-CNCs), which fulfill the most relevant requirements for antimicrobial packaging applications. Transparent gelatin/r-CNCs bionanocomposite films (0.5-6 wt% r-CNCs) were obtained by solution casting and displayed high UV-barrier properties, which were superior to the most used plastic packaging films. The gelatin/r-CNCs films exhibited a moderate water vapor permeability (0.09 g mm/m(2) h kPa), and high tensile strength (40 MPa) and Young's modulus (1.9 GPa). The r-CNCs were more efficient in improving the optical, water vapor barrier and tensile properties of gelatin films than conventional CNCs. Grafting of rosin on CNCs resulted in an antimicrobial nanocellulose that inhibited the growth of Staphylococcus aureus and Escherichia coli. The antibacterial properties of r-CNCs were sustained in the gelatin films, as demonstrated by agar diffusion tests and proof-of-principle experiments involving cheese storage. Overall, the incorporation of r-CNCs as active fillers in gelatin films is a suitable approach for producing novel eco-friendly, antimicrobial packaging materials. (c) 2020 Elsevier B.V. All rights reserved.

引用

页码：2974 / 2983

页数：10

共 56 条

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