4. Conclusions CS-BA was synthesized using self-assembly reaction of water- soluble CS and BA and was characterized by SEM. TEM and FT-IR. The superior performance of vulgaris essential oils when encap- sulated by CS-BA nanogel under both sealed and non-sealed con- ditions in comparison with free oils was The in vivo experiment also showed that the encapsulated oils at 700 mg/l concentration was capable of preserving the quality the fruit during the 1-month storage period. Having considered the remarkable synergic effect achieved when the CS-BA nanogel was used in combination with the studied essential oils, further investigations on these CS-BA nanogels and their preserving impact on other crops are also suggested.