▎ 摘 要
NOVELTY - Composition comprises graphene oxide, PTZ and redox enzyme. USE - The composition is useful as biosensing composition which is useful in electrode and kit for detecting, quantifying or both, carbohydrate in sample, and producing gluconic acid (all claimed). DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for the following: (1) electrode comprising the above-mentioned composition; (2) method for detecting, quantifying or both, carbohydrate in sample; (3) method for producing gluconic acid; and (4) kit comprising the above-mentioned composition.