Initiation–cessation control of an enzyme reaction using pH-sensitive poly(styrene) microcapsules with a surface-coating of poly(iminoethylene)
Abstract
Hydrolysis of maltotriose in an aqueous suspension of poly(iminoethylene)-coated poly(styrene) microcapsules containing β-amylase is initiated at pH 5.5 and stopped at pH 6.5; the initiation and cessation can be repeated because of a pH-induced reversible alteration in the permeability of the capsules by the substrate.