It was found that osmosed samples were considerably softer than untreated samples. From the result it can be concluded that firmness decreases during storage. Firmness changes during storage may be a consequence of water loss and cellular breakdown, due to both microbial growth and biochemical activity. A postharvest change in firmness can occur due to the loss of moisture through transpiration as well as enzymatic changes (Žnidarčič et al., 2008). Loss of firm texture and cell adhesion are processes associated with ripening that affect fruit quality and postharvest storage. It has been well established that fruit texture is closely related to cell wall structure and composition.