Using low-speed mixing and ultrasonication techniques, the researchers formed coarse emulsions and nanoemulsions, respectively, of both clove bud (Syzygium aromaticum) and oregano (Origanum vulgare). They then added methylcellulose, a type of edible fiber, in order to create film sheets out of the essential oils.
When they applied the edible sheets to preservative-free bread, the team observed a marked decrease in both yeast and mold counts after 15 days, with the smaller-sized particles providing more enhanced preservation. Compared to calcium propionate and plastic, the essential oil sheets maintained the bread’s freshness for longer and did not wear off like conventional preservatives.
…”Leachables from plastics can include everything from leftover monomer building blocks to additives used to make plastic strong or malleable,” reads a report by Chemical & Engineering News, which is published by the American Chemical Society (ACS).
“Probably the most infamous leachable from plastics is bisphenol A (BPA), which is used as a building block in polycarbonate bottles and in the epoxy-resin liners of metal cans.”
The freshness is nice but a few questions…
What is the shelf-life?
What happens when it gets wet?
How complicated and expensive is it to make?
And last but certainly not least, it’s less about the freshness and more about a substitute for plastic packaging.