De novo transcriptome assembly for the five major organs of Zanthoxylum armatum and the identification of genes involved in terpenoid compound and fatty acid metabolism.

Background: Zanthoxylum armatum (Z. armatum) is a highly economically important tree that presents a special numbing taste. However, the underlying regulatory mechanism of the numbing taste remains poorly understood.

[Study of the recognition between alpinetin and calf thymus DNA].

The recognition between alpinetin and DNA under physiological condition (pH 7.4) was investigated by fluorescence and UV-visible spectrometry. The experiment demonstrated that the fluorescence of alpinetin could be quenched by DNA.

[Studies on the interaction between puerarin and bovine serum albumin].

The interaction of puerarin and bovine serum albumin (BSA) under physiological condition was studied by fluorospectrophotometry. The experiment demonstrated that the quenching mechanism of puerarin a BSA was static quenching process. The quenching constant is 7.