Treatment

Time of reaction

(minutes)

Volume of NaOH (mL/g)

Volume of acetic anhydride (mL/g)

Swelling capacity (%)

Native

-

-

-

125.76

1

2.5

0.15

125

200.30

2

2.5

0.15

125

199.75

3

2.5

0.15

125

210.75

4

2.0

0.10

120

150.00

5

2.0

0.20

120

176.67

6

2.0

0.10

130

183.33

7

2.0

0.20

130

196.97

8

3.0

0.10

120

187.27

9

3.0

0.20

120

197.27

10

3.0

0.10

130

212.42

11

3.0

0.20

130

231.21

Modified corn starch^a

-

-

-

364.55