<p>Described are liquefying alkaline amylases each having residual activity not less than 70% when treated at pH 10 and 45 DEG C for 30 minutes in the presence of 1 to 100 mM of EDTA or EGTA; and a detergent comprising the same. Compared with the conventional amylases for a detergent, they have high chelating-agent resisting performance.</p>
