Development of novel biodegradable film based on chitosan with borax (sodium tetraborate) and boron nitride and their biological activity

Abstract

Summary Alternative food packaging materials were prepared using chitosan (CS) that contained borax (B) and boron nitride (BN) (1% and 3% w/w). The produced films were characterised using scanning electron microscopy (SEM), Fourier‐transform infrared spectroscopy, and thermogravimetric analysis. In addition, physicochemical, biodegradation, chemical resistance, and biological activities were also investigated. According to the biodegradability study, the highest weight loss among all films was detected in CS‐BN1. The images obtained by SEM showed the presence of agglomerates as the concentration of B and BN increased. Besides, the thermal stability of the CS‐B and CS‐BN were found higher than CS. Moreover, CS‐B and CS‐BN showed antioxidant, antimicrobial, and anti‐quorum sensing activity. Their effects were decreased with increased concentration. Therefore, the CS‐B and CS‐BN are promising materials to be used in food packaging to enhance food safety, especially for fruit and vegetables by reducing water vapour loss and microbial growth.

Investigation of liquid crystal epoxy resin composites for application in cryogenic environments

“…Figure 3c shows the TGA curve of raw BN and K‐BN, which revealed a two‐step degradation process for K‐BN, while raw BN showed no obvious weight loss with a slight increase (less than 0.6%) resulting from the instability of the instrument. The first weight loss for K‐BN at a temperature range of 100–150°C could be attributed to the evaporation of absorbed water and the hydroxyl group, 37 which was introduced through the oxidation process. The decomposition of silane gave rise to the second weight loss at 350°C, 38 which was consistent with FTIR analysis.…”

Advanced biomaterial‐based active packaging for food shelf‐life extension

“…Novel biodegradable film was also developed. Kaya et al (2022) prepared an alternative food packaging materials using chitosan containing borax (B) and boron nitride (BN). The chitosan films incorporated with B and BN are promising materials with increasing antioxidant, antimicrobial and anti-quorum sensing activity and can be used in food packaging to enhance food safety, especially for fruit and vegetables by reducing water vapour loss and microbial growth.…”

“…Either plant or microbial‐derived original or their derivatives including (i) cellulose, (ii) chitosan and (iii) alginate‐based reinforcing with essential oils from plant sources and their application on fruits and vegetable or fish packaging were discussed. Authors from all over the world have submitted manuscripts to this special issue (Adhikari et al ., 2022; Kaya et al ., 2022; Rathod et al ., 2022; Thanaruenin et al ., 2022; Wardana et al ., 2022; Yuan et al ., 2022). The expansion of novel biomaterials in diverse food packaging uses can ensure bio‐active future food packaging materials.…”