**9. Conclusions and Future Perspectives**

The use of substances obtained from plant-based natural sources has emerged as a trend in the fresh fruit and vegetable market for coating applications. The application of these compounds on a nanoscale has advantages allowing a wider use in relation to particles on larger scales. Recent studies indicate that nanoemulsions play an important role in the development of a new generation of coatings with improved properties for the preservation of fresh fruits and vegetables. This emerging technology makes it possible to improve the physical stability and performance of active substances within an edible coating, bringing the possibility of increasing the quality and/or nutritional value of fruits and vegetables. Although the evidence published to date suggests that nanoemulsions applied as edible coatings can extend the life of different fruits and vegetables, there are other important aspects to explore before considering them on a commercial scale in future trends, such as the bioavailability of bioactive compounds incorporated in the nanoemulsions, potential toxicity and digestibility, for example. Most of the tested nanoemulsion coatings have antimicrobial properties; however, it can also be possible to produce and apply edible coatings with health-promoting substances.

**Author Contributions:** Writing—original draft preparation, J.G.d.O.F. and M.M.; writing—review and editing, M.D.F. and A.P.; visualization, J.G.d.O.F. and M.M.; supervision, M.D.F.; project administration, M.D.F.; funding acquisition, M.D.F. All authors have read and agreed to the published version of the manuscript.

**Funding:** This research was funded by FAPESP (process 2016/23419-5,2018/10657-0, and 2018/24612-9), CAPES (001), CNPq (process 407956/2016-6; fellowship 310728/2019-3), Empresa Brasileira de Pesquisa Agropecuária (Embrapa), Rede Agronano, and MCTI-SisNano from Brazil.

**Acknowledgments:** Authors thank Elizabeth Baldwin for reviewing the manuscript and constructive suggestions.

**Conflicts of Interest:** The authors declare no conflict of interest.

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