超临界CO2萃取小茴香精油与其它方法所得提取物的成分对比

本文主要是研究超临界CO2萃取小茴香精油的GC－MS成分，并将其与水蒸汽蒸馏产物及索氏提取产物相对比。分析结果表明：超临界CO2萃取精油与水蒸汽蒸馏提取物、索氏提取物的主要差异在于脂肪酸的含量。超临界CO2萃取小茴香精油的主要成分为大茴香脑和脂肪酸，而水蒸汽蒸馏及索氏提取物的主要成分为大茴香脑。

Synthesis of ordered mesoporous carbons composed of nanotubes via catalytic chemical vapor deposition

Ordered mesoporous carbons composed of arrays of nanotubes have been synthesized using ordered mesoporous silica templates via catalytic chemical vapor deposition. The ordered carbons possess bimodal pores, namely, the pores arise from the "replica" of frameworks of the template and the pores correspond to carbon nanotubes formed in the channels of the template (see Figure).