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    超声波技术在中药物提取的应用
    2016-4-11 17:45:28
    1、超声波提取器原理是由超声波信号发生器(电源)产生的高频振荡信号通过换能器(振子)转化成高频机械振荡并传播到液体中,超声波在液体中疏密相间地向前辐射并产生数以万计的微小气泡,这些气泡在传播过程中的负压区形成、生长,而在正压区迅速闭合,在这种被称之为“空化效应”的过程中,气泡闭合可形成上千个大气压的瞬时高压,连续不断的产生的高压就像无数小“爆炸”不断冲击物体表面,从而使组织细胞壁内物质游离到溶液中,进而达到提取组织内的有效成份的目的。
    1, the principle of ultrasonic extractor is composed of an ultrasonic signal generator (power) high-frequency oscillation signal generated by the transducer (oscillator) into high frequency mechanical oscillation and spread to liquid, ultrasonic density in liquid phase on radiation and generates tens of thousands of tiny bubbles, the bubbles in the negative pressure area is spread in the process of the formation and growth. In the area of positive pressure quickly closed, this is called "cavitation effect" in the process of bubble formation of instantaneous high pressure closed thousands of atmospheric pressure, like generating continuous countless small "explosion" continue to impact the surface of the object, so that the material organization within the cell wall to free solution. In order to extract effective ingredients within the organization to.
    2、运用超声波多次效应,如机械振动、乳化、扩散、击碎、化学效应等,也都有利于使植物中的有效成分转移,并充分和溶剂混合,促进提取的进行。
    2, the use of ultrasonic multiple effects, such as mechanical vibration, emulsification, diffusion, crushing, chemical effects, etc., are also conducive to the effective composition of plants in the transfer, and fully and solvent mixture, to promote the extraction of.
    3、超声波能破坏植物药材的细胞,使溶媒能渗透到药材细胞中,从而加速药材中的有效成分溶解于溶媒中,以提高有效成分的提出率。超声波提取不会改变有效成分的结构,并且缩短提取时间,提高提取率,从而为中草药成分的提取提供了快速、高产的新方法。
    3, ultrasonic can damage the cells of medicinal plants, so that solvent can penetrate into the cells of medicinal materials, thus speeding up the Chinese herbal medicine effective components dissolved in the solvent, in order to improve the effective components of the proposed rate. Ultrasonic extraction will not change the structure of the active ingredients, and shorten the extraction time, improve the extraction rate, which provides a new method for the extraction of Chinese herbal medicine.
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