## 3 Results and Discussion
### Behavior of Cassava Bagasse during Application of Combined Methods
\begin{table}
\begin{tabular}{c c c c c c c c} \hline \hline \multirow{2}{*}{**Trial**} & **Concentration** & **Solution to Sample** & **Drying** & **Drying Time Up** & **Final Moisture 2** & **Processing Time 3** & **Observations** \\  & **(\%NaCL)** & **Ratio** & **Conditions** & **(min)** & **(\%)** & **(min)** & **(min)** \\ \hline
1 & 60 & 3:1 & 45 \({}^{\circ}\)C 1 m/s & Nf \({}^{1}\) & 34.55 \(\pm\) 1.98 & 880 & Crust formation that prevents drop of \\
2 & 60 & 5:1 & 45 \({}^{\circ}\)C 1 m/s & Nf & 32.28 \(\pm\) 3.21 & 920 & \\
3 & 30 & 3:1 & 45 \({}^{\circ}\)C 1 m/s & Nf & 27.73 \(\pm\) 2.52 & 840 & Moisture. At 720 min \\
4 & 30 & 5:1 & 45 \({}^{\circ}\)C 1 m/s & Nf & 28.52 \(\pm\) 1.10 & 900 & required by the \\ \hline
5 & 60 & 3:1 & 40 \({}^{\circ}\)C 1.5 m/s & Nf & 30.29 \(\pm\) 2.50 & 880 & standard treatment to \\
6 & 60 & 5:1 & 40 \({}^{\circ}\)C 1.5 m/s & Nf & 26.44 \(\pm\) 1.37 & 820 & \\
7 & 30 & 3:1 & 40 \({}^{\circ}\)C 1.5 m/s & Nf & 25.29 \(\pm\) 2.91 & 900 & samples still show high \\
8 & 30 & 5:1 & 40 \({}^{\circ}\)C 1.5 m/s & Nf & 25.83 \(\pm\) 1.70 & 880 & Moisture values. \\ \hline
9 & 60 & 3:1 & 35 \({}^{\circ}\)C 2 m/s & Nf & 48.84 \(\pm\) 1.40 & 820 & \\
10 & 60 & 5:1 & 35 \({}^{\circ}\)C 2 m/s & Nf & 47.96 \(\pm\) 2.39 & 900 & Insufficient drying \\
11 & 30 & 3:1 & 35 \({}^{\circ}\)C 2 m/s & Nf & 42.44 \(\pm\) 3.15 & 880 & conditions \\
12 & 30 & 5:1 & 35 \({}^{\circ}\)C 2 m/s & Nf & 43.86 \(\pm\) 0.96 & 920 & \\ \hline \multicolumn{7}{c}{Additional tests, lowering the concentration of osmotic agent:} \\
13 & 25 & 3:1 & 40 \({}^{\circ}\)C 1.5 m/s & Nf & 27.47 \(\pm\) 2.10 & 880 & No drop in Moisture \\
14 & 20 & 3:1 & 40 \({}^{\circ}\)C 1.5 m/s & 440 \(\pm\) 20.17 & 12.00 & 440 & Excellent Result \\ \hline Pattern & - & 40 \({}^{\circ}\)C 1.5 m/s & 720 \(\pm\) 15.28 & 12.00 & 720 & None \\ \hline \hline \end{tabular}  
* It was not possible to report the time required to reach 12% moisture, because in these treatments there was not a sufficient drop in moisture levels. 2; 3 They refer, respectively, to the final moisture reached and the required drying time. The process was stopped after observing constant moisture for more than two hours, exceeding the time required by the Pattern to reach a value of 12% moisture.  
\end{table} 
Table 4: Tests with adjusted OD parameters as pretreatment of convective drying. [PERSON] et al. [25] through their research, evidence the development of a layer of concentrated solids under the surface of lemon peels when using a concentration of 70% sucrose (p/p), sample to solution ratio of 20:1, immersion time of 2 h and agitation of 100 rpm while drying conditions were 50 \({}^{\circ}\)C and 1.5 m/s. This led to an alteration of the osmotic pressure gradient across the product-medium interface and lowered the driving force for the water flow, which translated into an increase in the osmo-convective drying time (from 5.73 to 6.95 a.m.). In this manner, some authors through their studies show the relationship between the use of high concentrations of osmotic agents, plus high drying temperatures and the increase in drying time. Bomba fruit and jackfruit were treated under working parameters of 75% sucrose and 20% NaCl, respectively, and drying conditions of 60 \({}^{\circ}\)C and 2 m/s, and 70 \({}^{\circ}\)C and 1.5 m/s, respectively. Obtaining a result increases in the drying time [48; 49; 50], and a longer drying time than the control as it has been reported by subjecting pear slices to OD operation processes with a high concentration of osmotic agent (75% sucrose) [50]. For drying temperature conditions of 35 \({}^{\circ}\)C and an air velocity of 2 m/s, in the treatments corresponding to 30 and 60% osmotic agent and solution to sample ratio of 5:1 and 3:1, respectively, although there was no crust formation, the conditions of the air used as a drying agent were not enough to overcome the attractive force that existed between the water and the osmotic agent present in the samples, preventing the drop in moisture in said treatments.