The procedure of preparing surfactant doped monoolein cubic phase was adapted from Tyler et al. The bulk cubic phase pastes without GOx were prepared by mixing the molten dry lipidic mixture with non-deuterated 100mM PB solutions in the ratio lipid: aqueous 60/40 (w/w). The cubic phase pastes hosting GOx were prepared according to Nazaruk et al. In short, 5 mg of GOx was dissolved in 100 µL of non-deuterated 100 mM PB solution (pH=7.0) to yield 50 mg mL -1 of GOx, after which 40 µL of the enzyme solution was mixed with 60 µL of molten dry lipidic matrix (Fc12-Br/MO or Fc12-PF6/MO).