The idea for our systematic review is to compare the efficacy of edible films that are gum-based and crosslinked to different bio-based materials (polysaccharides, lipids, etc) by comparing the water vapor permeability of each combination. Is that valid in a systematic review approach?
You can follow the Prisma and it may be helpful for your study.
http://www.prisma-statement.org/
If you are trying to establish efficacy in terms of water vapor permeability of different types of films then I think using systematic review will help you with your research question provided there are enough relevant studies and efficacy data can be pooled together. You may want to do quick scoping search on few databases to see what type of studies you are likely to come across and what sort of search strategy you will need. Also, you may find - https://lib.guides.umd.edu/SR/steps - this useful starter.
