Characterization of a Clove Essential Oil Slow-Release Microencapsulated Composite Film and Its Preservation Effects on Blueberry.

From Figure 11 b, the soluble solid contents of the four groups showed an increasing trend during the first few days of storage.

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With the increasing mass fraction of SA, the thickness of the substrate film increased, and the tensile strength, elongation at break, and WVP showed a trend of increasing and then decreasing, which was due to the good viscosity and film-forming property of SA, so that the molecules in the composite film were closely connected and the internal voids were filled, which was consistent with the results of Lan et al. 45 With the increase of the glycerol content, the thickness and elongation at break of the base film increased, and the tensile strength and WVP decreased and then increased, which is due to the good internal network structure of carboxymethyl cellulose, which can enhance the internal structural stability of the composite film.

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