Abstract: The extract ratios of the low polar oleoresin from Amomum villosum Lour. are compared between two methods: One is by microwave-solvent extraction(A); and another is by the solvent extraction(B) only. We chose the low polar solvent ether to extract the low polar components in the dry fruit powder; and also chose the suitable factors such as the ratio between the solvent and the powder, temperature and time in microwave-solvent method. The result showed that the extract ratio raised 14. 3% in the method A than in the method B, and the best ratio in the method A corresponds to the following condition: the ratio between the solvent and the powder is 5:1; the temperature is 45℃; and the time is 180 seconds. The extracting ratio is 3.2%. Applying the Solid Phase Microextraction (SPME) Headspace Sampling. we analyses the extract by CG/MS. The result showed that the extract content is raised and the selectivity is obvious in the microwave extraction.

Key words: Amomum villosum Loar, microwave extraction, the low polar components