| DAB | 3,3-diaminobenzidine |
| RFW | relative fresh weight |
| H2 | hydrogen gas |
| HNW | hydrogen nanobubble water |
| HRW | hydrogen-rich water |
| H2O2 | hydrogen peroxide |
| NBT | nitro blue tetrazolium |
| O2− | superoxide anions |
| PVP | polyvinylpyridoxone |
| RFW | relative fresh weight |
| ROS | reactive oxygen species |
| RWC | relative water content |
| SE | standard error |