PROCESS FOR EXTRACTING ESTROGENS FROM PREGNANT MARE URINE (PMU)

摘要

The present invention relates to a process for extracting estrogens from pregnant mare urine (PMU) comprising the following steps: (a) adding a salt to the pregnant mare urine, (b) conducting a liquid-liquid extraction of the pregnant mare urine of step (a) by using an organic solvent which is immiscible with the pregnant mare urine, and (c) separating the organic extract and drying it to form an extract. The operation of the present invention is easy and efficient. The concentrating efficiency is high, which enables convenient transportation of pregnant mare urine and is economical. In addition, the amount of conjugated estrogens recovered from the extract of pregnant mare urine is high.