The present invention relates to a biosensor for detecting a phenolic compound comprising an enzyme-iron oxide yolk shell nanocomposite. The biosensor comprising the enzyme-Fe_2O_3 yolk shell nanocomposite according to the present invention has high stability and an anti-interference effect, and not only has a broad linear range of detection, but also has an excellent effect of detecting phenolic compounds containing 2,6-dimethoxyphenol (2,6-DMP), and thus can be used in food or medicine-related industries.;COPYRIGHT KIPO 2019
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