Sweet potatoes are rich in protein, starch, pectin, cellulose, amino acids, vitamins, and various minerals, and the sugar content reaches 15% -20%. It has the reputation of "longevity food". Sweet potato is rich in dietary fiber and has the special function of preventing sugar from converting fat; it can promote gastrointestinal motility and prevent constipation. Sweet potato has a special protective effect on human organs and mucous membranes. Sweet potato flour is carefully ground using dehydrated sweet potato grains.
| ITEM | STANDARD |
| Color | With the inherent qualities of sweet potatoes |
| Flavor | Typical of sweet potato, free of other smell |
| Appreance | Powder, Non-caking |
| Moisture | 8.0% maximum |
| Ash | 6.0% maximum |
| Aerobic Plate Count | 100,000/g maximum |
| Mould and Yeast | 500/g maximum |
| Eļ¼Coli | Negative |