Statistical Optimization of Process Parameters for Lipase-Catalyzed Synthesis of Triethanolamine-Based Esterquats Using Response Surface Methodology in 2-Liter Bioreactor

<table class="table-group" id="tab2"><tr><td><table class="table"><tr><td class="thead-hr" colspan="16"><hr/></td></tr><tr class="thead"><td align="left"> </td><td align="center" colspan="15">Statistic for variables </td></tr><tr class="thead"><td align="left" rowspan="2"></td><td align="left" colspan="3">
									Enzyme amount (w/w%)</td><td align="center" colspan="3">
									
									Reaction time (h)</td><td align="center" colspan="3">
									Reaction temperature (°C)</td><td align="center" colspan="3">
									Molar ratio of substrates  (mole)</td><td align="center" colspan="3">
									Agitation speed (r.p.m.)</td></tr><tr class="thead"><td align="left">−1</td><td align="center">0</td><td align="center">1</td><td align="center">−1</td><td align="center">0</td><td align="center">1</td><td align="center">−1</td><td align="center">0</td><td align="center">1</td><td align="center">−1</td><td align="center">0</td><td align="center">1</td><td align="center">−1</td><td align="center">0</td><td align="center">1</td></tr><tr><td class="thead-hr" colspan="16"><hr/></td></tr><tr><td align="left">Skewness</td><td align="center">−0.261</td><td align="center">−0.819</td><td align="center">−0.524</td><td align="center">−0.551</td><td align="center">−0.608</td><td align="center">−0.550</td><td align="center">−0.446</td><td align="center">−0.925</td><td align="center">−0.540</td><td align="center">0.532</td><td align="center">−0.825</td><td align="center">0.349</td><td align="center">−0.425</td><td align="center">−0.781</td><td align="center">−0.220</td></tr><tr><td align="left">Kurtosis</td><td align="center">−0.706</td><td align="center">−0.034</td><td align="center">−0.163</td><td align="center">−0.706</td><td align="center">−0.766</td><td align="center">−0.399</td><td align="center">−0.848</td><td align="center">0.671</td><td align="center">−0.255</td><td align="center">−0.263</td><td align="center">1.111</td><td align="center">−0.728</td><td align="center">−0.737</td><td align="center">−0.156</td><td align="center">−0.476</td></tr><tr class="table-tr"><td colspan="16"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

Descriptive statistics to check the skewness and kurtosis values for five variables.

The Scientific World Journal

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Table 2

Table 2: Statistical Optimization of Process Parameters for Lipase-Catalyzed Synthesis of Triethanolamine-Based Esterquats Using Response Surface Methodology in 2-Liter Bioreactor 

Table 2 | Statistical Optimization of Process Parameters for Lipase-Catalyzed Synthesis of Triethanolamine-Based Esterquats Using Response Surface Methodology in 2-Liter Bioreactor 