Abstract
This study aimed to realize controlled release of pesticides. Inspired by the characteristics of plant pathogenic fungi that release cell wall-degrading enzymes (CWDEs) to destroy plant cell walls, enzyme-responsive carboxymethyl cellulose, pectin, sodium alginate, and glycerol (CPSG) films were constructed to encapsulate carboxymethyl chitosan (CMCS) particles loaded with magnolol (Mag) to form a Mag@CMCS@CPSG film. The results showed that the amount of Mag released by the Mag@CMCS@CPSG film under cellulase and pectinase stimulation was 43.18% at 7 h, which was 103.87% higher than that in water. After the Mag@CMCS@CPSG film treatment, the diameter of the disease spots on tobacco caused by Rhizoctonia solani decreased by 93.17%. The contact angle of the film on the rice leaf surface was less than 30° and the half-life of magnolol increased to 15.2 d. In conclusion, the CPSG film can realize the controlled release of pesticides and improve their utilization rate.
Published Version
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