2.8.4. Microscopic examination
The surface and cross-section microstructures of both uncoated and coated peppers and apples were examined under a scanning electron microscope (SEM) (Quanta 200, type FEI, Jeol Ltd., Japan). Observations and micrographs were performed in Low Vacuum mode (LV mode) using an LFD detector, at an accelerating voltage of 30 kV.