Prototype instrument development for non-destructive detection of pesticide residue in apple surface using Raman technology.

Highlights: [•] Optical instrument was developed for pesticide residue detection in apple surface. [•] Hardware and software system was self developed as prototype instrument. [•] The instrument can detect chlorpyrifos pesticide in apple surface nondestructively. [•] 6.69mg/kg of pesticide residue in apple surface is detectable by the instrument. [•] The system can detect the pesticide residue in apple surface within 4s. [ABSTRACT FROM AUTHOR]