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Abstract

The purposes of this research were to determine quality properties of the stored grape during storage period. In addition, temperatures and relative humidity of polyethylene bags used to place grapes and cold store were measured. Variety name of stored grape was Alphonse Lavalle. Storage temperatures were 3 C. Amount of soluble solid, titratable acidity, maturity index, decaying index and bunch colour were also determined and evaluated during the storage period. Soluble solid, titratable acidity of the stored grapes increased during the storage. If we would only evaluate decaying index for the quality of the grapes there was only one decayed bunch grape. Colour of the bunches was fresh green at the starting of the storage and then changed into matt green during the storage period. Distribution of the temperature and relative humidity in the cold stores and polyethylene bags were. Temperatures of the different places were not uniform in the cold store and were not same as set temperature of the cooling system because of the ventilation. There is only one ventilator to distribute the air and it is not enough for the uniform distribution of the air.

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