Salivary amylase is activated by: March 2007
Ans. B: Chlorine IonSalivary Amylase break large, insoluble starch molecules into soluble starches (amythrodextrin, achrodestrin and ultimately maltose.Ptyalin acts on linear alpha (1,4) glycosidic linkages.Optimum conditions for ptyalinOptimum pH - 5.6 -6.9Human body temperature-37 degrees CelsiusPresence of ceain anions and activators:- Chlorine and bromine - most effective- Iodine - less effective- Sulfate and phosphate- least effective
Sodium Ion
Chlorine Ion
Potassium Ion
Bicarbonate Ion