Comparative analysis on bioactivity against three stored insects of Ligusticum pteridophyllum Franch. rhizomes essential oil and supercritical fluid (SFE-CO) extract.

In order to develop more environmentally benignant insecticides, the Ligusticum pteridophyllum Franch. rhizomes essential oil and supercritical fluid (SFE-CO) extract were obtained by two published techniques, hydrodistillation and SFE-CO. The chemical components of this two tested samples were identified by using gas chromatography-mass spectrometry (GC-MS) and gas chromatography-flame ionization detector (GC-FID).

Metabolomic study of raw and bran-fried Atractylodis Rhizoma on rats with spleen deficiency.

Atractylodis Rhizoma, a classical Chinese medicine, exhibits unambiguous therapeutic effect on spleen deficiency in China for decades. The aim of the present study was to explore the different effects on the composition and level of endogenous metabolites in rats with spleen deficiency after oral administration of raw and bran-fired Atractylodis Rhizoma, and to explain the mechanism of pharmacodynamic enhancement of the bran-fried Atractylodis Rhizoma from the perspective of metabolomics. With this purpose, spleen deficiency model was established by diet, excessive fatigue and bitter cold diarrhea.

Toxicity and repellent activity of essential oil from Mentha piperita Linn. leaves and its major monoterpenoids against three stored product insects.

The essential oil (EO) from leaves of Mentha piperita was extracted by hydrodistillation. Twenty-one chemical components, accounting for 97.5% of the total oil, were determined by GC-MS and GC-FID.