## 3 Results and Discussion
### Minerals  
The chosen date fruit varieties were undergone for analysis of macro and microelements. The influence of SDBD plasma on macro (P, K, Ca, Mg, and Na) of palm dates are shown in Figure 4.  
P values of control palm dates ranged from 0.29 \(\pm\) 0.01 up to 0.47 \(\pm\) 0.03. However, p values of treated palm dates using SDBD plasma for 3 min ranged from 0.26 \(\pm\) 0.01 up to 0.47 \(\pm\) 0.02, as shown in Figure 4i. p values of palm dates have increased after SDBD treatment for _Nabtet Ali_ and _Swkari_ varieties from 0.29 \(\pm\) 0.01 to 0.32 \(\pm\) 0.03 and from 0.34 \(\pm\) 0.01 to 0.36 \(\pm\) 0.03, respectively. On the other hand, the p value of _Ajwa_ did not change after SDBD treatment. However, p values were decreased for the rest of the palm date treated varieties. Figure 4: The effect of SDBD plasma on macro elements (g/100 g) of palm dates, (i) P, \(p\) value = 0.99, (ii) K, \(p\) value = 0.06, (iii) Ca, \(p\) value = 0.4i, (iv) Mg, \(p\) value = 0.05, and (v) Na, \(p\) value = 0.35, lowercase letters a–g in the same column represent significance analysis; the different letters mean significant difference among various treatments at \(p\) < 0.05 level. Figure 4 ii shows that K values after SDBD plasma decreased for _Nablet Ali_ from 1.020.04 to 1.010.06 and for _Swkari_ from 1.130.03 to 1.040.04. The K values of the other palm date varieties were increased. The K values of the untreated samples ranged from 0.67 \(\pm\) 0.05 to 1.13 \(\pm\) 0.03, while their values for treated samples ranged from 0.78 \(\pm\) 0.03 to 1.17 \(\pm\) 0.05. Moreover, Ca values decreased for all palm date varieties except for _Swkari_ and _Khadari_ varieties. They increased from 1.24 \(\pm\) 0.05 to1.37 \(\pm\) 0.05 and from 0.98 \(\pm\) 0.04 to 1.11 \(\pm\) 0.06, respectively, as explained in Figure 4 iii. Ca values of untreated ranged from 0.76 \(\pm\) 0.02 up to 1.17 \(\pm\) 0.05 while treated one it ranged from 0.71 \(\pm\) 0.09 up to 1.11 \(\pm\) 0.06. The measured Mg values of palm dates have increased after SDBD treatment for _Ajwa_ from 0.66 \(\pm\) 0.02 to 0.70 \(\pm\) 0.05, _Maghol_ from 0.52 \(\pm\) 0.02 to 7.49 \(\pm\) 0.29, and _Khadari_ from 0.48 \(\pm\) 0.04 to 0.56 \(\pm\) 0.03 but they have increased for the rest of the treated palm date types (Figure 4 iv). Mg values varied from 0.23 \(\pm\) 0.03 to 0.94 \(\pm\) 0.05 for untreated samples and from 0.18 \(\pm\) 0.04 to 0.70 \(\pm\) 0.05 for treated ones. Moreover, Na values have increased after SDBD treatment for _Ajwa_ from 0.38 \(\pm\) 0.02 to 0.41 \(\pm\) 0.05, _Nablet Ali_ from 0.31 \(\pm\) 0.03 to 0.34 \(\pm\) 0.04 and _Swkari_ from 0.31 \(\pm\) 0.02 to 0.34 \(\pm\) 0.04 while they have decreased for the rest of the treated palm date varieties, as illustrated in Figure 4v. Na values varied from 0.31 \(\pm\) 0.02 to 0.38 \(\pm\) 0.02 for untreated samples and from 0.32 \(\pm\) 0.02 to 0.41 \(\pm\) 0.05 for treated ones. In these figures, there are no significant differences (\(p\)? 0.05) in macro-elements content between palm date varieties treated using SDBD plasma and untreated ones. The influence of SDBD plasma on the microelement content (Fe, Mn, Zn, and Cu) of palm dates is shown in Figure 5. Except for _Ajwa_ and _Rashodya_, Fe values increased with SDBD treatment for all treated palm dates, whereas they decreased from 234.33 \(\pm\) 5.02 to 232.67 \(\pm\) 9.01 and from 212.67 \(\pm\) 6.03 to 209.67 \(\pm\) 7.10, as shown in Figure 5i. Fe values varied from 202.33 \(\pm\) 12.00 to 234.33 \(\pm\) 5.08 for untreated samples and varied from 207.33 \(\pm\) 10.10 to 232.67 \(\pm\) 9.10 for treated ones. Furthermore, the results of Figure 5 ii, which depicts the measured Mn values of treated palm date varieties using SDBD for 3 min, show that Mn values increased after SDBD treatment for _Ajwa_ from 0.44 \(\pm\) 0.02 to 0.45 \(\pm\) 0.02, _Nablet Ali_ from 0.31 \(\pm\) 0.03 to 0.32 \(\pm\) 0.04, and _Swkari_ from 0.33 \(\pm\) 0.02 to 0.36 \(\pm\) 0.04, while they decreased for other treated palm date varieties.