| Class | Food | Before treatment | After treatment |
| 1 | Whole apple | × | × |
| Chewing gum | × | × | |
| Dried shell ligament | × | × | |
| Dried cuttlefish | × | × | |
| 2 | Fresh ear shell | × | × |
| Hard pickled radish | × | △ | |
| Hard cracker | △ | △ | |
| Hard biscuit | △ | △ | |
| 3 | Pickled radish | △ | △ |
| Peanuts | △ | △ | |
| Beef steak | △ | ○ | |
| Rice-cake cubes | △ | ○ | |
| 4 | Burdock | △ | △ |
| Potato chips | △ | ○ | |
| Boiled fish paste (kamaboko) | △ | ○ | |
| Artificially grown soybean | ○ | ○ | |
| 5 | Boiled carrot | △ | ○ |
| Boiled potato | △ | ○ | |
| Boiled eggplant | △ | ○ | |
| Bean curd (Tofu) | ○ | ○ |