Preparation and Characterization of Functional Films Based on Chitosan and Corn Starch Incorporated Tea Polyphenols

Abstract

The functional films based on chitosan and corn starch incorporated tea polyphenols were developed through mixing the chitosan and starch solution and the powder of tea polyphenols by the casting method. The objective of this research was to investigate the effect of different concentrations of tea polyphenols on the functional properties of the films. Attenuated total reflectance Fourier transform infrared spectrometry and X-ray diffraction were used to investigate the potential interactions among chitosan, corn starch and tea polyphenols in the blend films. Physical properties of the blend films, including density, moisture content, opacity, color, water solubility and water swelling, as well as morphological characteristics, were measured. The results demonstrated that the incorporation of tea polyphenols caused the blend films to lead to a darker appearance. The water solubility of the blend film increased with the increase of tea polyphenol concentrations, while moisture content and swelling degree decreased. The hydrogen bonding between chitosan, starch and tea polyphenols restricted the movement of molecular chains and was helpful to the stability of the blend films. The results suggested that these biodegradable blend films could potentially be used as packaging films for the food and drug industries to extend the shelf life to maintain their quality and safety.

Preparation and Performance Characterization of a Composite Film Based on Corn Starch, κ-Carrageenan, and Ethanol Extract of Onion Skin

“…The addition of EEOS affected the crystal structure of the composite film, which may be because of the interaction between the polyphenols contained in EEOS and the starch molecules, affecting the order of the starch molecular structure and preventing the recrystallization of starch. This is similar to the research results of Ren [ 11 ]. The crystallinity of the starch film comes from the crystallization of amylose and amylopectin.…”

“…Although starch-based materials have good oxygen barrier properties, compared with traditional plastics, the use of corn starch to produce biodegradable plastics has disadvantages, such as poor moisture resistance and poor mechanical properties, and its application is limited [ 2 ]. To overcome these shortcomings, mixing starch with other natural biopolymers to form composites has received much attention [ 11 ].…”

Synthesis and Characterization of Porous Chitosan/Saccharomycetes Adsorption Microspheres

“…The peak at 2879 cm −1 was attributed to a -CH stretching vibration. The peaks at 1658, 1598, and 1423 cm −1 correspond to C=O stretching, N–H bending, and -OH bending vibrations, respectively [ 35 , 36 , 37 ]. For saccharomycetes, a wide and strong peak was observed at 3340 cm −1 due to hydroxyl-stretching vibrations.…”

Physical, mechanical, and antibacterial properties of Hibiscus sabdariffa L. extract and graphene oxide incorporated corn starch nanocomposite films

“…The thickness of a film affects characteristics such as light transmittance, barrier property, and mechanical strength. [42,45] The thickness of the produced films varied between 104.4 and 204.7 μm (Table 2). CS film exhibited significantly lower thickness (p < 0.05) compared to CS/HE and CS/HE/GO films.…”