Figure 1.

Schematic illustration of the microchannel emulsification process and apparatus. (a) Beads were produced via microchannel emulsification and internal gelation followed by rinsing in complete medium (three times or until phenol red indicator no longer changes in color) prior to further product assessment. (b) Photo of the microchannel emulsification device consisting of a top (oil phase) and bottom (alginate phase) chamber as well as a polytetrafluoroethylene (PTFE) plate in between with three oblong (700 × 200 μm) microchannels in parallel. (c) Two‐dimensional drawing of the front view of the device with dimensions in mm. (d) Three‐dimensional (3D) computer‐assisted design drawing of the device. (e) 3D drawing of the PTFE plate along with a microscope image of a laser micromilled channel on the plate