**A.1 DNSA reagents for terminating endo-polygalacturonase activity**

**Reagents [17]**

i.Sodium hydroxide – 10 g

ii.Potassium sodium tartrate – 200 g

iii.Phenol – 2 g

iv. 3, 5-Dinitrosalicylic acid – 10 g

v. 5% Sodium sulphite – 10 ml

vi.0.03% Glucose – 10 ml

vii.Distilled water – 1Litre
