Abstract
The purpose of this paper is to investigate the valuation method of freshness of agricultural products by means of nondestructive method.
This method is to measure the active conditions of agricultural products without destroying some abstructed samples for the continuous measurement of freshness of agricultural products.
The quality of cucumbers was investigated during storage.
A summary of the results was as follows;
1) During storage, the change of surface color of cucumber could not be recognized, but the gloss of cucumber changed in 1-2 days.
2) Length and weight of cucumber were gradually decreased, but the diameter of a cusp of cucumber was decreased at first and after 1-2 days it was gradually increased. After 7-8 days it was decreased again. At the maximum point of those changes, the diameter of a cusp of cucumber was larger than that of harvested day.
3) The respiration rate during storage was gradually decreased, and the formula of those changes was as follows;
Y=0.0412X2-0.71X+7.43
where, Y: the respiration rate [CO2mg/100g/hr] X: storage days [day]
