Dissipation kinetics, food safety evaluation and decontamination of chlorantraniliprole in cowpea

Abstract

Cowpea is known for its high protein content (18–25%) and also chiefly raised for green fodder. The infesting pests, pod borer and aphids are the most destructive ones. To control these pests, chlorantraniliprole emerges as a promising molecule. Thus, its needs to assess the dissipation nature of the chlorantraniliprole. Hence, a trial was conducted at IIVR, Varanasi, India. The residue analysis was done through solid phase extraction method followed by gas chromatoghraphy analysis. The analytical method was standardized and validated according to international standard. The half–life of chlorantraniliprole in cowpea pods was estimated in the range of 2.79- 2.33 days in the year-I and 2.51–2.32 days in the year-II for single dose (SD) and double dose (DD) respectively. Similarly, half-life of the chlorantraniliprole in leaves 2.43–2.27 days whereas, 1.94–1.70 days in case of soil. The exposure of the residues in pods were less than maximum permissible intake (MPI). The RQ values revealed that there could be negligible risk to earthworms and arthropods. Washing with boiling water was found the most effective decontamination treatment to remove residue from cowpea pods. Thus, it could be concluded that chlorantraniliprole does not pose any significant threat when uses in cowpea in a particular dose.

Keywords:

• Chlorantraniliprole residue
• safety
• risk assessment
• decontamination
• cowpea

Disclosure statement

No conflict of interest was reported by the author(s).

Data availability statement

The data that support the findings of this study are available from the corresponding author at reasonable request.

Additional information

Funding

The authors are thankful to ICAR-Indian Institute of Vegetable Research, Varanasi, India for financial assistance.