Factor

Temperature/˚C

Hour/h

m_starch:m_cat2

Esterification rate/%

Experiment 1

180

8

1:1

93.92

Experiment 2

180

10

2:1

90.82

Experiment 3

180

12

3:1

88.52

Experiment 4

200

8

2:1

90.27

Experiment 5

200

10

3:1

89.99

Experiment 6

200

12

1:1

89.35

Experiment 7

220

8

3:1

71.17

Experiment 8

220

10

1:1

88.15

Experiment 9

220

12

2:1

85.98

Average 1

91.087

85.120

90.473

Average 2

89.870

89.653

89.023

Average 3

81.767

87.950

83.227

Standard deviation

9.320

4.533

7.246