Abstract:

       We synthesized molecularly imprinted polymers (MIPs) with selective absorption effect on gastrodin by molecular imprinting technology and gastrodin as a template. Scanning electron microscopy (SEM) and equilibrium absorption experiment reveal that MIPs are rough and porous and have many binding points higher absorption capacity, as compared with nonimprinted polymers (NIPs). MIPs can reach 88.38% of their equilibrium absorption capacity within 30 min in absorption kinetics. Absorption capacity of MIPs to gastrodin is much greater than to glucose, so they exhibit better selective absorption capacity. Results indicate that MIPs, selective stuffings, have such potency as extracting and separating gastrodin from natural sources.

Key words: molecularly imprinted polymer, gastrodia, gastrodin, absorption performance