3D-printed hydrogel extends metabolic lifetime of yeast - first use for brewing but next step metabolic engineering?
No paper published yet on this exact use from what I can see, but the polymers might be these:
Karis, D., Ono, R., Zhang, M., Vora, A., Storti, D., Ganter, M. and Nelson, A., 2017. Cross-Linkable Multi-Stimuli Responsive Hydrogel Inks for Direct-Write 3D Printing. Polymer Chemistry.