BACKGROUND
The present work evaluated the performances of protein-based bioplastics obtained from black soldier fly prepupae (Hermetia illucens). Protein films were synthesized by film casting, both using the whole proteins and their soluble fraction at pH = 10. The effects of glycerol as a plasticizer and of citric acid as a mild cross-linker onto film properties were also evaluated.
RESULTS
Films obtained using the soluble protein fraction resulted the strongest, as well as the most homogeneous, and transparent ones. Protein mild cross-linking improved their tensile properties, especially in films obtained with the whole protein fraction. Non-cross-linked samples had a high affinity with water while cross-linking almost eliminated the ability of films to absorb water. All protein-based films proved to be an effective barrier to red-light (T% < 2).
CONCLUSION
Bioplastics derived from black soldier fly prepupae may find applications in the agricultural sector (biodegradable pots, mulching films, utensils) and deserve to be tested for food and non-food packaging. This article is protected by copyright. All rights reserved.