A novel metal-organic framework of Ba-hemin with enhanced cascade activity for sensitive glucose detection.

ABSTRACT: Early glucose detection is important in both healthy people and diabetic patients. Glucose biosensing based on glucose oxidase (GOX) is a common method. However, native proteins are mostly membrane impermeable and are prone to degradation in complex sample environments. Herein, we report a facile one-step biomineralization method by simply mixing aqueous solutions of hemin and barium nitrate with glucose oxidase (GOX) to form Ba-hemin@GOX composites. Glucose (Glu) is introduced through self-driven sampling to trigger the GOX-catalysed production of hydrogen peroxide, which could help the subsequent 3,3',5,5'-tetramethylbenzidine (TMB) oxidation reaction catalysed by Ba-hemin to yield the blue-coloured product. The sensor exhibited a detection limit as low as 3.08 μM. The operability and ac

SUBMITTER: Yi J 

PROVIDER: S-EPMC9284537 | biostudies-literature | 2022 Jul

REPOSITORIES: biostudies-literature