3.2. Enzyme comparison
3.2.1. Linear range
The plant sulfite oxidase (pSO) shows a linear range from 0.04mg/L to 2mg/L SO2 with R2 = 0.99996. Higher amounts than 2mg/Lwereabovethemaximumdetectioncapacityofthedetector and were thus not quantifiable. In contrast, the results with animal sulfite oxidase (cSO) in the same concentration range do not show a linear correlation (R2 = 0.88809), but rather form a curve. Thus, the pSO seems to have either greater capacity for the reaction with sulfitesoritsreactiontime(intheimmobilizedstate)ismuchfaster than that of the cSO.