摘要
采用双频超声技术提取海金沙黄酮,选择乙醇体积分数、溶剂体积、超声作用时间、浸泡时间等因素进行正交实验,得出影响总黄酮提取率的因素次序为:乙醇体积分数>溶剂体积>超声作用时间>浸泡时间,双频超声提取最佳工艺条件为:乙醇体积分数为70%,乙醇体积为40 mL,超声作用时间为30 min,浸泡时间为4 h。在此条件下,总黄酮提取率为86.25%。在相同的条件下,与单频超声提取方法相比较,具有溶剂用量少,提取效率高,提取时间短等优点。
A novel extraction process of flavonoids from lygodium japontcum by dual-treuuency ultrasound wave was tested. The optimum extracting conditions of flavonoids were investigated by using orthogonal experimental design. The significance of these factors affecting flavonoids extraction was in the following order： ethanol volume fraction〉solvent volume〉ultrasound time extraction time. Their optimal parameters were： ethanol volume fraction of 70%, solvent volume of 40 mL, ultrasound time of 30 min, and extraction time of 4 h. Under this optimal condition, the extraction rate of flavonoids was 86. 25%. Compared with conventional extraction, it was more effective with the advantages of short extraction period, higher yield and saving solvent amount.
出处
《食品与生物技术学报》
CAS
CSCD
北大核心
2006年第4期51-55,共5页
Journal of Food Science and Biotechnology
基金
广东省科技计划项目(2003B31709)
关键词
双频超声
海金沙
黄酮
提取
dual-freuuency ultrasound
Lygodiumjaponicum
flavonoids
extraction
