Functional packaging films originating from hemicelluloses laurate by direct transesterification in ionic liquid

Xueqin Zhang; Naiyu Xiao; Mingjie Chen; Yi Wei; Chuanfu Liu

doi:10.1016/j.carbpol.2019.115336

Functional packaging films originating from hemicelluloses laurate by direct transesterification in ionic liquid

Carbohydr Polym. 2020 Feb 1:229:115336. doi: 10.1016/j.carbpol.2019.115336. Epub 2019 Sep 19.

Authors

Xueqin Zhang¹, Naiyu Xiao², Mingjie Chen³, Yi Wei⁴, Chuanfu Liu⁵

Affiliations

¹ College of Light Industry and Food Science, Zhongkai University of Agriculture and Engineering, Guangzhou, 510225, China; State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou, 510640, China. Electronic address: zhangxueqin0228@163.com.
² College of Light Industry and Food Science, Zhongkai University of Agriculture and Engineering, Guangzhou, 510225, China.
³ State Key Laboratory of Applied Microbiology Southern China, Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application, Guangdong Institute of Microbiology, Guangzhou, 510070, China.
⁴ State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou, 510640, China.
⁵ State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou, 510640, China. Electronic address: chfliu@scut.edu.cn.

PMID: 31826458
DOI: 10.1016/j.carbpol.2019.115336

Abstract

An alternative transesterification with vinyl laurate (VL) was applied for chemical modification of hemicelluloses (HC) to prepare functional packaging films. Successful transesterification was confirmed by FT-IR and NMR. Semitransparent laurated HC (LHs) films were prepared by solvent casting method. SEM indicated the ordered honeycomb-patterned surface and the dense cross section of LHs films. The LHs films exhibited excellent hydrophobicity with water contact angle about 120° and the enhanced mechanical properties with tensile strength and elongation at break as 33.94 ± 3.09 MPa and 22.41 ± 2.87%, respectively. The water vapor permeability (WVP) and oxygen permeability (OP) values of LHs films ranged from 1.59 ± 0.07 to 2.23 ± 0.11 (10^-10·g/m·s·Pa) and 1.21 ± 0.04 to 4.24 ± 0.30 (cm³·μm/m²·d·kPa), respectively. Moreover, the films had acceptable antioxidant activity. In terms of these properties, the shelf life of green chilies could be largely extended to 15 days after packing with LHs films.

Keywords: Bioplastics; Chemical modification; Hemicelluloses; Ionic liquid; Packaging film.

MeSH terms

Capsicum
Esterification
Food Packaging*
Ionic Liquids / chemistry*
Laurates / chemistry*
Magnetic Resonance Spectroscopy
Oxygen / chemistry
Permeability
Polysaccharides / chemistry*
Spectroscopy, Fourier Transform Infrared
Steam
Water / chemistry

Substances

Ionic Liquids
Laurates
Polysaccharides
Steam
Water
hemicellulose
Oxygen