Low methoxyl pectin–carboxymethyl cellulose(LMP-CMC) composite films carrying potassium sorbate(LCP films) were prepared to study the release kinetics of Psb into food stimulant(50% ethanol). The release of Psb from LCP films with three ratios of LMP:CMC(8:2, 6:4, and 4:6) was studied at 4 ℃. The release of Psb from LCP films(4:6) with different contents of calcium chloride(1%, 2%, 4%, and 8%), MMT(1%, 4%, 8%, and 12%) and Psb(2%, 5%, 8%, 15%) at 4 ℃ was also investigated. The release kinetics of Psb was de...