Abstract
An ethylene absorbent in a polyethylene hag containing persimmon fruit works effectively for extending the storage period. When persimmon fruit was stored in polyethylene bags with or without ethylene absorbent at room temperature or 5°C, the effect was compared of invertase on sucrose in the fruit.
Invertase is considered to decline the quality of persimmon fruit during days of storage. Therefore, the activity of invertase was used as indications for the quality of the fruit.
The acid invertase in the soluble fraction of persimmon fruit showed higher activity in the non-use of the ethylene absorbent than in its use at room temperature and 5°C, whereas that in the insoluble one had no significant differences. The activity of acid invertase in the soluble fraction was apt to be higher at room temperature of the nonuse of ethylene absorbent than at 5°C of it, because the optimum temperature (45°C) of invertase is closer to the room temperature than to 5°C. It may be concluded that the ethylene absorbent can be used irrespective of the temperature to be used for storage of fruit, as it protects the decomposition of sucrose.
