Characterization of Carboxymethyl Cellulose Films Incorporated with Chinese Fir Essential Oil and Their Application to Quality Improvement of Shine Muscat Grape

Abstract

In this study, carboxymethyl cellulose (CMC) films containing 1%, 2%, and 3% Chinese fir essential oil (CFEO) were prepared. The mechanical, optical, physical, microstructural, thermal stability and antimicrobial properties of the films were studied. A traditional steam distillation method was applied for CFEO extraction, in which 35 volatile components were identified. The research results showed that the CMC film mixed with 1% CFEO had the highest tensile strength (TS) and elongation at break (EB), whereas the flexibility was decreased under higher concentrations of CFEO. However, the film’s degree of transparency under controlled humidity did not decrease with an increase in CFEO concentration; thus, the sensory evaluation was not adversely effect. Furthermore, the thickness and the water solubility (WS) of film increased after the addition of CFEO. The thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC) results indicated that the thermal stability of the CMC-CFEO films improved. Moreover, the composite films showed excellent inhibitory effects toward Gram-positive bacterias and Penicillium citrinum. The treatments of grapes with CMC + 1% CFEO resulted in the best properties during storage. CMC-CFEO film can be a candidate for food packaging due to its excellent performances.

Development of Microcapsule Bioactive Paper Loaded with Chinese Fir Essential Oil to Improve the Quality of Strawberries

“…The average diameter of the antibacterial zone was 12.1, 11.8 and 10.9 mm, respectively, with no significant difference between the bacteria. Mei et al [49] results show that Gram-positive bacteria are more sensitive to CFEO than Gram-negative bacteria. The difference in results may be related to the essential oil composition.…”

Current Trends in the Utilization of Essential Oils for Polysaccharide- and Protein-Derived Food Packaging Materials

“…Chinese fir EO /CMC-based films were synthesized, and showed antimicrobial potential against Penicillium citrinum and Gram-positive bacteria. Promising results were achieved while employing composite films for the storage of grapes [ 97 ]. Amjadi et al used gelatin-based films containing cinnamon essential oil to explore the impact of cellulose nanofibers and sodium montmorillonite (MMT) on the properties of gelatin-based films.…”

Physicochemical Characterisation of Polysaccharide Films with Embedded Bioactive Substances

“…However, in recent times, these edible packaging systems have undergone remarkable advancements, due to the need for more sustainable and environmentally friendly packaging solutions. Modern innovations have revolutionised edible films and coatings [1][2][3][4]. These biopolymeric packaging materials are designed to emulate the properties and functionalities of traditional packaging materials like plastic films and coatings [5][6][7][8].…”