Ultrasonic extraction technology points
In the process of industrialized ultrasonic extraction, there are several points that are needed for the majority of ultrasonic extraction customers. If these places are not noticed, the yield will be affected. As a company with years of experience in ultrasonic extraction, I feel that it should be responsible and Obligation to tell everyone the key points of ultrasonic extraction technology, so as not to let everyone detour.
1. Soaking time: The influence of soaking time on the extraction efficiency is actually the effect of the degree of wetness of the medicinal materials on the extraction efficiency. However, if the soaking time is too long, the sugars, mucus, and the like in the medicinal material will diffuse and adhere to the surface of the medicinal material to hinder the entry of the solvent, thereby affecting the proposed efficiency. For different herbs, experiments can be used to determine the appropriate soaking time.
2, extraction temperature: the impact of soaking time on the extraction efficiency is actually the effect of the degree of moisture on the extraction efficiency. However, if the soaking time is too long, the sugars, mucus, and the like in the medicinal material will diffuse and adhere to the surface of the medicinal material to hinder the entry of the solvent, thereby affecting the proposed efficiency. For different herbs, experiments can be used to determine the appropriate soaking time.
3. Ultrasonic frequency: Ultrasonic frequency is one of the main factors affecting the extraction rate of active ingredients. Studies have shown that for most medicinal materials, when other conditions are fixed, the extraction rate of the target component decreases as the ultrasonic frequency increases. However, when ultrasonic extraction technology is used to extract the total alkaloids of Leonurus, the higher the ultrasonic frequency, the higher the proposed rate, which indicates that the target components of different herbs have their own suitable extraction frequency.
4. Ultrasonic treatment time: Ultrasonic extraction is usually shorter than conventional extraction. Under normal circumstances, the ultrasonic treatment time can be better within 20~45min. Ultrasonic extraction time had no significant effect on extraction rate relative to other influencing factors.
5. Duty cycle: The duty cycle of the ultrasonic wave is the ratio of the working time of the ultrasonic wave to the gap time (degassing time). Ultrasonic extractors can be divided into continuous and intermittent types depending on the mode of operation. Ultrasonic waves are present in the medium of the continuous ultrasonic extractor, and the intermittent ultrasonic extractor is degassed after a period of operation, that is, a period of time.
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