## 4 Conclusions
The highest amount  
\begin{table}
\begin{tabular}{l c c c c c c c c c} \hline \hline
**S** & **T** & **I** & **AA** & **TPC** & **TFC** & **Deff** & **hm** & **h\%** & **DE** & **SEC** \\ \hline \multirow{8}{*}{HA+IR} & & 250 & 67.42 \({}^{\text{cdf}}\) & 10.46 \({}^{\text{d}}\) & 9.40 \({}^{\text{d}}\) & 2.80 \(\times\) 10\({}^{-10\,\text{e}}\) & 1.70 \(\times\) 10\({}^{-8\,\text{n}\,\text{o}}\) & 9.43 \({}^{\text{d}}\) & 22.61 \({}^{\text{n}}\) \\  & 40 & 500 & 67.38 \({}^{\text{cdf}}\) & 7.52 \({}^{\text{f}}\) & 6.06 \({}^{\text{f}}\) & 4.90 \(\times\) 10\({}^{-10\,\text{j}}\) & 3.67 \(\times\) 10\({}^{-8\,\text{j}}\) & 9.19 \({}^{\text{d}}\) & 5.86 \({}^{\text{k}}\) & 21.91 \({}^{\text{n}}\) \\  & & 750 & 67.38 \({}^{\text{cdf}}\) & 7.36 \({}^{\text{fth}}\) & 5.44 \({}^{\text{fth}}\) & 5.74 \(\times\) 10\({}^{-10\,\text{j}}\) & 4.57 \(\times\) 10\({}^{-8\,\text{j}}\) & 8.34 \({}^{\text{fth}}\) & 8.34 \({}^{\text{fth}}\) & 25.22 \({}^{\text{m}}\) \\  & & 250 & 67.44 \({}^{\text{cdf}}\) & 11.85 \({}^{\text{c}}\) & 10.26 \({}^{\text{c}}\) & 1.80 \({}^{-10\,\text{j}}\) & 2.37 \(\times\) 10\({}^{-8\,\text{j}}\) & 10.75 \({}^{\text{d}}\) & 10.75 \({}^{\text{d}}\) & 24.62 \({}^{\text{m}}\) \\  & 55 & 500 & 67.04 \({}^{\text{eef}}\) & 13.80 \({}^{\text{b}}\) & 12.37 \({}^{\text{b}}\) & 4.96 \(\times\) 10\({}^{-10\,\text{j}}\) & 3.74 \(\times\) 10\({}^{-8\,\text{j}}\) & 8.53 \({}^{\text{g}}\) & 8.53 \({}^{\text{g}}\) & 31.09 \({}^{\text{j}}\) \\  & & 750 & 67.06 \({}^{\text{eef}}\) & 15.14 \({}^{\text{a}}\) & 14.10 \({}^{\text{a}}\) & 7.61 \(\times\) 10\({}^{-10\,\text{e}}\) & 6.73 \(\times\) 10\({}^{-8\,\text{e}}\) & 8.39 \({}^{\text{h}}\) & 8.39 \({}^{\text{h}}\) & 31.30 \({}^{\text{j}}\) \\  & & 250 & 67.35 \({}^{\text{eef}}\) & 3.56 \({}^{\text{h}}\) & 3.65 \({}^{\text{h}}\) & 3.78 \(\times\) 10\({}^{-10\,\text{j}}\) & 2.57 \(\times\) 10\({}^{-8\,\text{j}}\) & 10.82 \({}^{\text{a}}\) & 10.82 \({}^{\text{a}}\) & 29.34 \({}^{\text{k}}\) \\  & 70 & 500 & 66.95 \({}^{\text{eef}}\) & 7.46 \({}^{\text{eef}}\) & 5.69 \({}^{\text{f}}\) & 7.14 \(\times\) 10\({}^{-10\,\text{j}}\) & 6.16 \(\times\) 10\({}^{-8\,\text{j}}\) & 12.71 \({}^{\text{a}}\) & 12.71 \({}^{\text{a}}\) & 24.83 \({}^{\text{m}}\) \\  & & 750 & 68.02 \({}^{\text{ab}}\) & 3.14 \({}^{\text{l}}\) & 5.00 \({}^{\text{fth}}\) & 8.01 \(\times\) 10\({}^{-10\,\text{d}}\) & 7.23 \(\times\) 10\({}^{-8\,\text{d}}\) & 12.04 \({}^{\text{b}}\) & 12.04 \({}^{\text{b}}\) & 26.36 \({}^{\text{l}}\) \\ \hline \multirow{8}{*}{IR+HA} & & 250 & 67.72 \({}^{\text{abcd}}\) & 7.35 \({}^{\text{fth}}\) & 5.56 \({}^{\text{fth}}\) & 2.36 \(\times\) 10\({}^{-10\,\text{p}}\) & 9.28 \(\times\) 10\({}^{-9\,\text{p}}\) & 4.59 \({}^{\text{m}}\) & 4.59 \({}^{\text{m}}\) & 47.00 \({}^{\text{c}}\) \\  & 40 & 50 of total phenolic content among the combined methods (HA55-IR750) was about 11.2% higher than the highest amount of total phenolic content recorded by the hot air method (HA40). Among the combined strategies, the fourth strategy (IR+HA) in terms of retention of antioxidant activity and the third strategy (HA+IR) in terms of total phenol content and flavonoid content had better conditions than the other strategies. The highest antioxidant activity and total flavonoid content recorded among the combined methods were not much different from the highest amounts recorded in the hot air method. Conceptualization, M.T.-O., E.A.A.-A. and E.T. ; methodology, M.T.-O., E.A.A.-A., A.S. and E.T. ; software, M.T.-O. and A.M.; validation, A.M. and M.N. ; formal analysis, M.T.-O., E.A.A.-A., E.T. and A.M.; investigation, M.T.-O. ; resources, M.T.-O. ; data curation, M.T.-O. ; writing--original draft preparation, M.T.-O. ; writing--review and editing, M.T.-O., E.A.A.-A., E.T., A.M. and M.N. ; supervision, E.A.A.-A., E.T. and A.M.; project administration, E.A.A.-A. ; funding acquisition, M.N. All authors have read and agreed to the published version of the manuscript. This research received no external funding. Not applicable. Data Availability StatementData are contained within the article.