Analysis of Cinnamomum petrophilum Leaves Extracts Prepared by Three Kinds of Technologies

In comparison with the distillation of Cinnamomum petrophilum using ordinary equipment, the oil yield was 20% higher (2.

Yield and change of essential oils from Cinnamomum petrophilum leaves during steam distilation were studied.

Based on a verification of the scale and geometrical features of the karst caves in the Tianguiyan limestone,this paper makes a preliminary evaluation on the dvelopment prospect of the caves as a tourism resource,suggesting that trheir tourism value can be enhanced by a comprehensive and three-dimensional development.

By making an investigation,this paper points out that Ao Cai Yan is actually Gui Shan Cai Yan,a famous scholar and poet on Chinese in Jiang hu times.

In the paper discussions were made on the monitoring and assessment of rainfall, run-off, and sediment concentration produced in three cultivation models of Cinnnamomum petrophilum plantation.