Carbohydrate immobilized on a dendrimer-coated colloidal gold surface for fabrication of a lectin-sensing device based on localized surface plasmon resonance spectroscopy

► We develop an LSPR-based biosensor that immobilizes carbohydrate on a colloidal gold. ► We optimize the condition for carbohydrate immobilization on the biosensor. ► Binding specificity with lectins and linear range responses were obtained.