Invertase-producing bacteria and the sweetness content of sweet potato

The sucrose content of sweet potatoes two weeks after storage (M2) showed an increase between 78.04% to 92.93%. In contrast, four weeks after storage (M4) decreased between 6.82 to 20.85%. • The glucose content in Cilembu sweet potatoes in various environments showed significant differences at each storage time.

The glucose content decreased during storage, namely 18.80% to 29.69% in M2, and 13.33% to 27.78% in M4. • The fructose content in M0 and M2 showed a significant difference, while M4 showed an no significant difference. The fructose content decreased during storage, namely around 25.64% to 33.64% at M0, while at M4 the decrease ranged from 31.03% to 44.44%. • The population of invertase-producing bacteria decreased during storage, where the decrease was very significant, namely 42.27% to 51.20% in M2, and in M4 around 89.46% to 94.08%. • Invertase activity in M2 showed an increase in all environments, with a range of 18.57% to 26.28%.