... slowly. 2). Thermal stabilityStable under the temperature of 60. Optimum temperature is 5860. 3). Optimum pH is ... then cool down to 58-60.Add glucoamylase, recommended dosage is 80-200μ/g raw material. Keep the temperature ... for 30-60 mins, then cool down to ... industry, liquefy the starch and cool down to 60, adjust PH value to 4.2-4.5, ...