Table 4: Box-Behnken designs of different variables with their responses.

     Variables (%)Antioxidant activity (% activity)
RunSucroseNaNO3TemperatureDPPH assayReducing powerFe2+   scavenging activityFRAP assayNO scavenging activityTPC (mg/mL)

110.052550.200.54048.346.152.903.1
250.052577.401.32068.966.974.8012.6
310.352576.201.26066.665.272.906.4
450.352546.400.30040.940.245.702.1
510.21545.500.34540.741.944.802.2
650.21548.100.46042.343.247.602.8
710.23568.300.77062.360.462.806.9
850.23576.201.25066.865.874.806.1
930.051566.900.65060.558.664.604.2
1030.351567.900.68962.954.570.605.7
1130.053575.401.20066.765.774.9012.1
1230.353573.441.18065.562.570.908.1
1330.22572.700.98064.261.868.907.4
1430.22573.801.02064.361.868.907.8
1530.22572.800.97064.761.668.908.5
1630.22573.901.10065.762.669.998.6
1730.22572.061.10065.864.770.108.3