[Enzymatic extraction and antibacterial activity of aucubin from Eucommia ulmoides leaves].

Objective: To investigate the technology of Aucubin in Eucommia ulmoides leaves extracted by enzymatic method and its antibacterial activity.

Methods: Aucubin in Eucommia ulmoides leaves was extracted by cellulase method. The extraction technology was optimized using the content of Aucubin as index.

[Study on the extraction technology of total flavonoids from Selaginella uncinata].

Objective: To optimize the extraction technology of total flavonoids and improve the extraction ratio of total flavonoids from Selaginella uncinata.

Methods: Using the content of flavonoids as the index determined by UV spectrophotometry, chose single factor experiment to investigate the total flavonoids content influenced by four factor ethanol concentration, extracting time, extraction times and solvent content on the influence of extraction efficiency. And on the basis, L9 (3(4)) orthogonal experiment was carried out.