The glucoamylase was extracted and purified by PEG/(NH4)2SO4 double aqueous phase system.
利用PEG/（NH4）2SO4双水相系统从粗酶液中提取糖化酶。
Salt: Chemical compound formed when the hydrogen of an acid is replaced by a metal or its equivalent, such as ammonium (NH4).
盐：酸中的氢被金属或相当金属的基团如氨（NH4） 取代后所生成的化合物。
The influence of temperature on nitrification ability of BAC filter under the condition of high NH4(superscript +)-Ninfluent water was studied.
研究了温度对高氨氮进水条件下生物活性炭滤池硝化能力的影响。
应用推荐