日期:2023-04-20 17:10
狀態(tài):待解決
提問:kjcxac
tal alkaloids before and after purification was evaluated by DPPH method. The results were as follows:(1)AB-8 macroporous adsorption resins had the best purification effects. The optimum process conditions were crude herbal dose of 50 mgmL-1, sample volume of 26 BV, sample flow rate of 2 BVh-1, eluted successively with 3 BV water and 4 BV 50% ethanol. Under these optimized conditions, the content of total alkaloids was increased from 13.33% to 56.64%.(2)The total alkaloids had good scavenging ef
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