Plant extracts such as pine nut shell, peanut shell and jujube leaf improved the antioxidant ability and gas permeability of chitosan films

Development and characterization of chitosan films carrying Artemisia campestris antioxidants for potential use as active food packaging materials

“…It is noteworthy that the differences in XRD patterns of CH-ACHE and CH-ACAE were on account of the different phenolic composition and thereby the different molecular arrangement of the film components. A similar decrease in the crystallinity of chitosan films was noted by Zhang et al [64] when incorporating different plant extracts. However, after ACEO was added into chitosan films, only the sharp peak at 11.2° was maintained, whereas a broad diffraction peak appeared at around 20° corresponding to the amorphous region.…”

Formulation of active food packaging by design: Linking composition of the film-forming solution to properties of the chitosan-based film by response surface methodology (RSM) modelling

“…The mean thickness of all tested film samples (Section 2.2) was 120 ± 30 µm, which is slightly above the values obtained for our previous chitosan-based films prepared from the FFSs containing up to 1.5% (w/v) of hop extract [20]. Nevertheless, it is still within the range of values for other chitosanbased films with incorporated active components [16,18].…”

“…Extracts obtained from different parts of terrestrial plants are frequently used active components in eco-friendly films [13]. Recent studies on chitosan-based films highlight the utilization of extracts obtained from banana [14], mangosteen [15], mango [16], black plum [17], pine/peanut/jujube [18], turmeric [19], hop [20], oak [21], and chestnut [22]. The extract obtained from chestnut wood is quite complex in composition but its major fraction consists of hydrolyzable tannins (HTs), while other components include water, ellagic/gallic acids, simple sugars, proteins, mineral substances, and crude fibre [23].…”

Comparative Evaluation of the Antioxidant Properties of Whole Peanut Flour, Defatted Peanut Protein Meal, and Peanut Protein Concentrate

“…The DRSA of moringa seed kernels was also shown to increase proportionately with increase in antioxidant concentration (Jahan et al, 2018). Another study on different pine nut varieties and co-products also showed dose response effects for the DRSA (Zhang et al, 2020) and maya nuts exhibited similar antiradical behavior (Ozer, 2017). Similarly, a study with Tunisian dates also showed a positive correlation of DRSA with sample concentration (Kchaou et al, 2014).…”