Physical and antibacterial properties of corn distarch phosphate/carboxymethyl cellulose composite films containing tea polyphenol

Abstract

Antibacterial packaging films were developed by incorporating tea polyphenol (TP) into corn distarch phosphate (CDP)/carboxymethyl cellulose (CMC) films via solvent casting. Incorporation of TP had a great influence on the physical properties of the composite films. The prepared composite films were evaluated by scanning electron microscopy and Fourier transform infrared spectroscopy, and their physical properties, moisture barrier properties, and antibacterial activities were investigated. Microstructural studies revealed that the surface of the CDP/CMC/TP composite films became rough and uneven sponge-like. Attenuated total reflectance Fourier transform infrared exhibited interactions between TP and CDP/CMC films matrix was caused by hydrogen bonding. Addition of TP into CDP/CMC films improved the extensibility, toughness, and moisture barrier properties of the composite films greatly. The CDP/CMC/TP composite films showed excellent antibacterial activity against Staphylococcus aureus, Bacillus subtilis, and Escherichia coli. The CDP/CMC/TP films are promising functional packaging materials. Practical applicationsTea polyphenol (TP) exhibits effective antioxidant and antibacterial properties, which can be extracted from tea. In this work, we successfully fabricated a novel antibacterial films containing TP, and improved the physical properties of the films. This study can provide a good candidate and a promising way for the development of active packaging material in food industry. Moreover, there is immense potential in the application of food preservation.

Antioxidant Films from Cassava Starch/Gelatin Biocomposite Fortified with Quercetin and TBHQ and Their Applications in Food Models

“…Hanani et al [ 19 ] reported that fish gelatin containing pomegranate ( Punica granatum L.) peel powder has great potential as an active film with antioxidant and antimicrobial properties, and thus, it can help maintain the quality and prolong the shelf life of food products. Shao et al [ 20 ] added tea polyphenol (TP) into corn distarch phosphate (CDP)/carboxymethyl cellulose (CMC) composite films that showed excellent antibacterial activity against Staphylococcus aureus , Bacillus subtilis , and Escherichia coli . Fang et al [ 21 ] produced starch-based composite films incorporated with salicylic acid (SA) to which the addition of waxy maize starch nanoparticles/κ-carrageenan (WMSNs/KC) significantly increased the tensile strength, water vapor barrier, and thermal stability, while the transparency and elongation at break decreased slightly.…”

A micro/nanofiber antibacterial pad with core–shell structure for cold fresh lamb preservation

“…coli is through the destruction of bacterial cell membranes, inhibiting the ability of the bacteria to bind to host cells and each other to form biofilms (Reygaert, 2014). The high content of peptidoglycan in the cell wall of S. aureus cannot protect the cell, TP is easy to transfect cells, inhibit nucleic acid, interfere with the energy system, and achieve the antibacterial effect (Shao et al., 2020). It is also observed that the initial antibacterial effect of the uniaxial antibacterial pad is significantly higher than that of the coaxial antibacterial pad.…”

Application of biopreservatives in meat preservation: a review

“…As the concentration of TP increased, the inhibitory activity of the CDP/CMC/TP composite membrane significantly increased (P < 0.05; Shao et al, 2020). TP has a wide range of applications in the preservation of raw meat due to its good antibacterial effects.…”

“…Shao et al (2020) prepared the antibacterial packaging film by solvent casting method of TP and corn expanded phosphoric acid (CDP)/carboxymethyl cellulose (CMC) to inhibit S. aureus, Bacillus subtilis and E. coli. It was found that it has a stronger inhibitory effect on Grampositive bacteria, compared with Gram-negative bacteria.…”