Self-assembled ZnO quantum dot bioconjugates for direct electrochemical determination of allergen

► ZnO quantum dots were employed to form self-assembled bioconjugate in biosensor. ► The bioconjugate of ZnO-ovomucoid was recognized by the concanavalin A substrate. ► The extent detection of the captured ZnO-ovomucoid was accomplished by square wave voltammetric.