Bio-based pectin films with cannabidiol extract from pollen of Cannabis sativa L - active packaging to protect anthocyanins in Thomson seedless dark grapes

In the present study, polysaccharide films based on pectin with an extract from pollen of Cannabis sativa L. were developed. Thompson seedless grapes were packed in the resulting films to assess the stability of anthocyanins in stored fruit. Fruit that were packed in 0.5 F, 1.0 F films were characterised by a gradual increase in anthocyanins after 8,11 and 14 days. For fruit stored in 2.0 F film, the increase in anthocyanins was small (p > 0.05). After 14 days of storage, the value of anthocyanins in the fruit was 0.51 ± 0.02 [%]. In combination with the obtained slow changes in L*, a*, b* parameters for the packaged fruit, it can be concluded that the film limited access to light and oxygen, which slowed down the degradation and oxidation reactions of anthocyanins, as well as the excessive synthesis of these pigments. The resulting eco-friendly packaging film with extract from pollen of Cannabis sativa L., in addition to meeting the requirements of a circular economy, can effectively protect against loss of quality and shelf life of the fruit.