Method prepares chamomile essential oil and natural cis and trans-spiroethers total contents at least 1 weight percent

摘要

The method of the invention prepare complete chamomile essential oil contain weight percent be 1 natural cis and trans-spiroethers be it is characterized in that, make the fresh chamomile of extraction residue or due to chamomile extract with steam distillation or water distillation. Carrying out water distillation pH value range is 4 to 8, and reducing substances optionally are being added. Chamomile essential oil prepares natural cis and trans-spiroethers comprising at least 2 weight percent together, and thus the amount of cis-spiroethers is at least 1.The amount of 5 weight ratios and the trans-spiroethers are at least 0.5 weight percent