*The Role of Some Pre and Postharvest Applications on Storage Behavior and Protein Pattern… DOI: http://dx.doi.org/10.5772/intechopen.109899*


#### *New Advances in Postharvest Technology*


## *The Role of Some Pre and Postharvest Applications on Storage Behavior and Protein Pattern… DOI: http://dx.doi.org/10.5772/intechopen.109899*


**Table 5.**

*Effect of field chitosan spraying, storage treatments, storage period and interaction between them in the percentage of total sugars in the fruits of the Breim cultivar stored at a temperature of ( 10 2) °C for the 2014 and 2015 seasons.*

#### *The Role of Some Pre and Postharvest Applications on Storage Behavior and Protein Pattern… DOI: http://dx.doi.org/10.5772/intechopen.109899*

The storage period had a clear effect, as it was noted from the two mentioned tables that the percentage of total sugars increases with the increment in the storage period, where the highest percentages of total sugars reached (55.83 and 55.69), (50.79 and 50.60%) for the fruits of the two seasons after six months of storage, while the lowest percentages of total sugars were (49.35 and 48.68), (47.75 and 47.54%) for the fruits of the mentioned cultivars for the two seasons, respectively, after one week of storage. The reason may be due to that the percentage of total sugars increases by decreasing the percentage of water content in the fruits [31]. As for the effect of the interaction between spraying with chitosan in the field and storage treatments, the results indicated that the fruits treated with 2% chitosan and stored with the compound (1-MCP) at a concentration of 1 ppm worked significantly in reducing the percentage of total sugars, where it was the lowest percentage of total sugars (48.70 and 48.47), (46.58 and 46.22%) for the fruits of the studied cultivars for the two seasons respectively, while the highest percentages of total sugars were (57.52 and 57.52), (52.07 and 51.73%) for the control fruits of the studied cultivars.

The results also showed that the interaction between spraying chitosan in the field and the storage period had a significant effect, as the lowest percentage of total sugars was (52.37 and 52.23), (48.64 and 48.45%) for the fruits of the Berhi and Breim cultivars treated in the field with 2% chitosan at the end of the storage period for the two seasons respectively. The highest percentage of total sugars was (60.53 and 60.42) (53.76 and 53.55%) for the control fruits of the two cultivars for the two seasons, respectively after six months of storage. The results showed that the interaction between storage treatments and storage period had a significant effect, as the lowest percentage of total sugars reached (54.81 and 54.50), (49.71 and 49.35%) for the fruits of the studied cultivars treated with the compound (1-MCP) at a concentration of 1 ppm at the end of the storage period for the two seasons respectively. The highest percentage of total sugars was (57.60 and 57.13%) and (52.81 and 52.65%) for the control fruits of the studied cultivars, for the two seasons, respectively after six months of the storage.

The interaction among the three factors (spraying chitosan in the field, storage treatments, and storage period) had a significant effect. It was noted that the highest percentage of total sugars were (62.06 and 62.06%), (56.36 and 56.03%) in the pre and post-untreated fruits of the Berhi and Breim cultivars after six months of storage for the two seasons respectively.

#### **3.4 Total titratable acidity**

The results of **Tables 6** and **7** showed the effect of spraying chitosan in the field, storage treatments and storage period, and the interaction among them on the percentage of total titratable acidity in the fruits of the Berhi and Breim cultivars stored at a temperature of 10 2°C for the two seasons 2014 and 2015. It is noted that field chitosan spraying had a significant effect on the preservation of the total titratable acidity percentage, where the highest percentage of total titratable acidity was (0.293 and 0.275), (0.287 and 0.313)% for the fruits of the two cultivars Berhi and Breim, field-treated with 2% chitosan for the two seasons, respectively, with a significant difference from the rest of the treatments, while the lowest percentage reached to (0.244 and 0.230), (0.246 and 0.246%) in the control fruits of Berhi and Breim cultivars for the two seasons, respectively. The results are consistent with [29], which indicated that the effect of pre-harvest chitosan spraying in all treatments led to an increase in acidity compared to the control treatment, except for the concentration of


#### *New Advances in Postharvest Technology*


## *The Role of Some Pre and Postharvest Applications on Storage Behavior and Protein Pattern… DOI: http://dx.doi.org/10.5772/intechopen.109899*


**Table 6.** *chitosan*

*Effect of field spraying, storage treatments, storage period and interaction between them in the percentage of total titratable acidity in the fruits of the Berhi cultivar stored at a temperature of ( 10 2) °C for the 2014 and 2015 seasons.*


#### *The Role of Some Pre and Postharvest Applications on Storage Behavior and Protein Pattern… DOI: http://dx.doi.org/10.5772/intechopen.109899*


#### *New Advances in Postharvest Technology*


 **7.** *Effect of field chitosan spraying, storage treatments, storage period and interaction between them in the percentage of total titratable acidity in the fruits of the Breim cultivar stored attemperature of ( 10 2) °C for the 2014 and 2015 seasons.*
