活力定義：1U：One unit amount of inhibitor which, after preincubation for 20 minutes at 25° C, pH 6.9 will reduce the activity of two units of human salivary alpha-amylase by 50% (one unit of alpha-amylase will liberate, from soluble starch, one micromole of maltose per minute at 25° C, pH 6.9).
上海工商
危險(xiǎn)品化學(xué)品經(jīng)營(yíng)許可證（不帶存儲(chǔ)）
營(yíng)業(yè)執(zhí)照(三證合一)
北京