The factors affecting ultrasonic extraction analysis

There are many influencing factors of ultrasonic extraction:

1, soaking time, soaking time on the extraction efficiency is, in fact, the influence of the medicinal material wetting degree effect on the extraction efficiency. But if the soaking time is too long, and the sugar, phlegmatic temperament of medicinal herbs in the organization spread out, and attached to the medicinal materials of solvent into the surface, which affects efficiency are put forward. According to different materials, through the experiment to determine the suitable soaking time.

2, extraction temperature, soaking time on the extraction efficiency is, in fact, the influence of the medicinal material wetting degree effect on the extraction efficiency. But if the soaking time is too long, and the sugar, phlegmatic temperament of medicinal herbs in the organization spread out, and attached to the medicinal materials of solvent into the surface, which affects efficiency are put forward. According to different materials, through the experiment to determine the suitable soaking time.

3, ultrasonic frequency, ultrasonic frequency is one of the main factors influencing the effective components extraction yield. Research has shown that for most herbs, when other conditions must target component along with the increase of ultrasonic frequency extraction yield decline. But with ultrasonic extraction technology to extract motherwort total alkaloids, ultrasonic frequency, the greater the forward rate, the greater the this suggests that the target component has its own different medicinal materials suitable for extracting frequency.

4, ultrasonic processing time: the ultrasonic extraction is usually shorter than conventional extraction time. In general, ultrasonic processing time within 20 ~ 45 min can obtain good extraction effect. Relative to other factors, ultrasonic extraction time on extraction yield were not significantly affected.

5, duty cycle, duty ratio of ultrasonic is the job of the ultrasonic time and interval time (the ratio of degassing time). According to different operating mode, the ultrasonic extraction can be divided into two types, continuous and intermittent. Continuous ultrasonic wave in the medium of ultrasonic extractor has been exist, and the intermittent ultrasonic extractor at work after a period of time, namely, stop for a period of time for degassing.

6 and liquid ratio: under the condition of the same liquid ratio, ultrasonic extraction rate than traditional, but also has a great influence on the ultrasonic extraction, give priority to with ethanol, acetone extract more commonly, when liquid ratio reaches a certain value in extracting maximum value.