“In the present study, ethanolic extracts from the extract of unshelled seeds of Cannabis sativa L. were used to produce films in order not to generate additional waste, taking into view a circular economy. Combinations of apple pectin and citrus pectin in a ratio of 80:20 were used. Film samples containing 0.5, 1.0 and 2.5 [wt%] of the extract were extruded. Antimicrobial, mechanical and barrier properties of the obtained films were tested. Samples with 0.5 [wt%] showed a WVTR of 16.98 [g/m2d]. The water vapour barrier properties of the films decreased with an increase in the amount of extract used. As the amount of extract increased, the transparency of the films decreased linearly to 12.84 [%] (0.5 [wt%]), 4.90 [%] (1.0 [wt%]) and 4.99 [%] (2.5 [wt%]). It was observed that the brightness of the samples decreased with increasing concentration, due to the presence of higher levels of phenolic compounds. Tests carried out showed that the prepared films exhibited inhibitory activity against all micrograms tested. All prepared films had antibacterial activity against the Salmonella typhimurium strain. Similarly, in the case of L. monocytogenes.”
https://pubmed.ncbi.nlm.nih.gov/39418822/
“In this study, packaging films were developed based on bio-based ingredients, including pectin (a combination of apple and citrus pectin in a ratio of 80:20), tragacanth gum and ethanol extracts from unshelled cannabis seeds. Ethanolic extracts from unshelled cannabis seeds were used in this study to avoid waste generation, in relation to a circular economy. The use of higher amounts of extract resulted in lower TS and EB values. With increasing amounts of extract, the transparency of the film decreased linearly and was 12.84 [%] (0.5 wt%), 4.90 [%] (1.0 wt%) and 4.99 [%] (2.5 wt%), respectively. The film was observed to have a significant colour change, confirmed by examination under a stereoscopic microscope. This was confirmed by colour tests of L a b. The highest value of the L* parameter (89.91) was obtained for the film sample without extract. All prepared films had a lethal effect on the Salmonella typhimurium strain. The same was the case for L. monocytogenes bacteria. The high antimicrobial activity of the films seems to be due to the active effect of the phenolic compounds present in the films that were found in the extract.”
https://www.sciencedirect.com/science/article/pii/S0927776524005721?via%3Dihub