4, Conclusion The clove and cinnamon leaf Eos showed the highest antifungal properties. The physicochemical characterisation of the different emulsions prepared these Eos revealed that the Eo con- with centration in emulsion brings about changes in particle size. XG the on the to stability of emulsions by adsorption oil droplet Indeed the higher the polymer content, the surface. compound of the shorter the droplet mean diameter. The main and cinnamon leaf Eos was which is responsible clove together with sesquiterpene hydrocarbons, for their antifungal activity. The owy emulsions preparation led to Eo loss of about 40t, and such loss was affected by the amount of XG employed. and was not due to the Eo The antifungal activity of the clove type. and cinnamon leaf ow emulsions against several strains, such as A flavus, niger and Penicillium expansum, was evidenced in the A. in vitro and in vvo tests. The incorporation of the o/w emulsions into strawberry jam did not modify the texture or colour of the product, but negatively affected aroma, taste and the overall acceptance of jam. The combined results demonstrate the promising advantages of using emulsions as natural additives to preserve and/or extend the shelf life of strawberry jams. Nevertheless, further studies are needed to reduce the sensory impact on final products, such as high pressure homogenisers to reduce the oil droplet's particle size, increasing the interfacial area exposed to microbial cells, or combining different natural agents in order to improve synergistic effects in food stuff