3.1.4. k-Carrageenan Biosensor:
For nonaqueous solvents, k-Carrageenan gel has been considered as an
appropriate choice for enzyme immobilization in organic phase electrode
construction (Campanella et al.,1999). In another study, Campanella et
al. (2000) have reported, carrageenan biomaterial as immobilizing
membrane for superoxide dismutase enzyme, which determines superoxide
radical received through amperometric gaseous electrode for oxygen or
hydrogen peroxide. Other biosensor application includes reduction of
pathogen contamination in poultry food (Medina, 2004), radical
scavenging properties in hydrophobic compounds (Campanella et al., 2001)
and low-level urea detection (Taşaltın et al., 2020). Another enzymatic
biosensor for glucose detection from glucose-spiked saliva samples is a
bio nanocomposite film comprising a polyelectrolyte complex (PEC) doped
with gold nanoparticles containing glucose oxidase (Rassas et al.,
2019).