Fig. 4.Tissue structure and oil droplet distribution in avocadoflesh with no treatment (A, C, D) and after HPP treatment for 6 min at 600 MPa (B, E, F). Oil droplets, apart from oil
idioblast cells, are small and relatively uniform in untreated tissue; after treatment, fewer larger droplets of variable size are present. Cells remain delimited by cell walls, although
in some cases the cell wall viewed using cryo-SEM showed internal disruption (E). Insets in E and F show details of disrupted and non-disrupted walls in different samples after
HPP. A and B. 100μm vibratome section viewed using differential interference contrast; bar = 0.1 mm. C–F. cryo-SEM fractures (C minimal ice sublimation) bar = 10μm. O—
oil droplets, I—oil idioblast cell, arrows indicate cell walls, and arrowheads in E delimit the large irregular oil droplets