## 4 Conclusions  
It was possible to incorporate essential oils of lime, fennel, and lavender into yam starch-based films. The effect of the addition of essential oils on the tensile properties, the barrier properties, the moisture content, the solubility in water, the absorption capacity, the angle of contact with water and the optical properties of the films were studied. The mechanical properties indicated that the tensile strength varied between 1.98 and 4 MPa. The modulus of elasticity was found between 76 and 127 MPa, and the elongation was \begin{table}
\begin{tabular}{c c c c c} \hline \hline
**Day** & **Treatment** & **Good Appearance (\%)** & **Softening (\%)** & **Aspergillus Presence (\%)** \\ \hline \multirow{7}{*}{0} & C\({}_{\text{without},i}\) & 100 & 0 & 0 \\  & C\({}_{\text{with},i}\) & 100 & 0 & 0 \\  & RFS\({}_{\text{without},i}\) & 100 & 0 & 0 \\  & C\({}_{\text{without},i}\) & 100 & 0 & 0 \\  & C\({}_{\text{with},i}\) & 90 & 0 & 10 \\
2 & RFS\({}_{\text{without},i}\) & 100 & 0 & 0 \\  & RFS\({}_{\text{with},i}\) & 100 & 0 & 0 \\  & C\({}_{\text{with},i}\) & 100 & 0 & 0 \\  & C\({}_{\text{with},i}\) & 80 & 10 & 20 \\
4 & RFS\({}_{\text{without},i}\) & 100 & 0 & 0 \\  & RFS\({}_{\text{with},i}\) & 100 & 0 & 0 \\  & C\({}_{\text{without},i}\) & 90 & 10 & 0 \\
6 & C\({}_{\text{with},i}\) & 60 & 30 & 40 \\  & RFS\({}_{\text{without},i}\) & 100 & 0 & 0 \\  & C\({}_{\text{without},i}\) & 85 & 15 & 0 \\
8 & C\({}_{\text{with},i}\) & 30 & 50 & 70 \\  & RFS\({}_{\text{without},i}\) & 100 & 0 & 0 \\  & C\({}_{\text{without},i}\) & 70 & 30 & 0 \\
10 & C\({}_{\text{with},i}\) & 0 & 70 & 100 \\  & RFS\({}_{\text{without},i}\) & 100 & 0 & 0 \\  & RFS\({}_{\text{with},i}\) & 95 & 0 & 5 \\  & C\({}_{\text{without},i}\) & 65 & 35 & 0 \\
12 & C\({}_{\text{with},i}\) & 0 & 100 & 100 \\  & RFS\({}_{\text{without},i}\) & 95 & 5 & 0 \\  & RFS\({}_{\text{with},i}\) & 90 & 5 & 10 \\  & C\({}_{\text{without},i}\) & 50 & 50 & 0 \\
14 & C\({}_{\text{with},i}\) & 0 & 100 & 100 \\  & RFS\({}_{\text{without},i}\) & 90 & 10 & 0 \\  & RFS\({}_{\text{with},i}\) & 85 & 10 & 15 \\ \hline \hline \end{tabular}
\end{table} 
Table 6: Strawberry inoculated with _Aspergillus niger_: samples without coating (C\({}_{\text{without},i}\): Uninoculated and uncoated; C\({}_{\text{with},i}\): inoculated without coating) and samples with coating (RFS\({}_{\text{without},i}\): without inoculum and with coating; RFS\({}_{\text{with},i}\): inoculated and coated) stored at 85% RH and 25 \({}^{\circ}\)C for two weeks. between 16 and 130% for the formulations with essential oils. A plasticizing effect of essential oils was observed. As expected, WVP decreased, and OP increased due to the hydrophobic nature of the oil. In the same way, the addition of oil affected the properties of interaction with water. The films with oils showed lower moisture content, less solubility in water, and a slightly higher water absorption capacity. About antioxidant properties, lavender oil and derived films had the highest antioxidant capacity. Regarding the coating application on strawberries, it was observed that the strawberries coated with F5 lost 22.8 g of water/100 g strawberry less than those not coated during the 14 days of storage. In addition, the total inhibition of _Aspergillus niger_ was observed until day 8 of storage. From day 10, it was observed in a much lower proportion than on the control samples. This study has shown the potential application of yarn starch-based coatings with the content of essential oils lavender, lime, and fennel on the preservation of strawberry, both to avoid weight loss and protect it against _Aspergillus niger_. Conceptualization, R.O.-T.; data curation, K.J.F.-L., J.H.-F. and M.C.R. ; formal analysis, P.G.-C. and J.H.-F.; funding acquisition, R.O.-T.; investigation, P.G.-C., M.C.R. and R.O.-T.; methodology, R.O.-T.; project administration, R.O.-T.; resources, M.C.R. ; software, [PERSON], [PERSON] and M.C.R.