极限抗拉强度
DPPH
抗氧化剂
阿布茨
保质期
透氧性
活性包装
材料科学
化学
傅里叶变换红外光谱
多糖
食品科学
透气比表面积
食品包装
化学工程
复合材料
有机化学
氧气
图层(电子)
工程类
作者
Lele Cao,Yanping Wang,Haiqing Song,Rui Zhang,Jiayi Liu,Yuzhe Meng,Jie Li,Yuqi Song,Zhijian Xiao,Zheng Tang,Lin Wu,Xingfeng Guo
标识
DOI:10.1016/j.lwt.2024.116434
摘要
An antioxidant packaging film was prepared by incorporating soluble soybean polysaccharide (SSPS) and pomelo peel extract (PPE), which possessed antioxidant and enhanced mechanical properties for lipids preservation. The effects of PPE dosage on structural, physical, and antioxygenic performance of the SSPS-xPPE films were investigated. Further, the preservation effect of SSPS-5PPE film on lard was also studied. Scanning electron microscopy results indicated that the film stratified with excess PPE (≥0.07 g/g SSPS) remained intact and compact. Hydrogen bonding between SSPS and PPE was shown in the Fourier transform infrared spectra. The incorporating of PPE greatly lessened the light transmittance but enhanced the UV resistance to further optimize the barrier and mechanical properties by reducing the water vapor permeability from 2.79 × 10−14 to 1.37 × 10−14 g⋅mm−2⋅s−1⋅Pa−1, lowering the oxygen permeability from 2.69 × 10−15 to 1.87 × 10−15 cm2⋅s−1⋅Pa−1, and improving the tensile strength from 0.38 to 2.39 MPa. The SSPS-xPPE film possessed good antioxidant ability, with the scavenging activity of SSPS-7PPE film for DPPH and ABTS•+ were 80.34% and 91.68%, respectively. Packaging experiments suggested SSPS-5PPE film could extend the shelf life of lard by approximately 25 d at 20 °C. In brief, the PPE-incorporated SSPS film can be used in packaging to extend the shelf life of lipids.
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