| APX | Ascorbate peroxidase |
| CAT | Catalase |
| MDA | Malondialdehyde |
| GR | Glutathione reductase |
| GSH | Reduced glutathione |
| GSSG | Oxidized glutathione |
| PBC | Pineapple fruit peel biochar |
| PP | Polypropylene |
| ROS | Reactive oxygen species |
| RWC | Relative water content |
| SOD | Superoxide dismutase |