Fig. 2From: Oral colon-targeting core–shell microparticles loading curcumin for enhanced ulcerative colitis alleviating efficacya The appearance images of Cur/zein MPs and Shellac coated Cur/zein MPs samples; FT-IR spectrum (b) and XRD analysis (c) were used to characterize the drug loading in zein MPs and Shellac coated zein MPs. d In vitro Cur release profiles of Cur/MPs and Shellac@Cur/MPs in different release medium with pH values to simulate the gastrointestinal tractBack to article page