Ultrasonic Extraction Of Rose Essential Oil

The extraction of rose essential oil originated in ancient times, dipping flowers with water to extract the active ingredients in them. At present, there are many ways to extract rose essential oil, but generally these traditional methods have low extraction rate and many impurities, which are not conducive to the later separation and purification. The single-time extraction yield of successful ultrasonic extraction equipment is as high as 95%, which has wide applicability. Cost-effective.

The principle of ultrasonic extraction of rose essential oil

Ultrasonic extraction method is to use ultrasonic to strengthen the extraction of effective components of roses, which is a physical crushing process. Ultrasound mainly produces unique mechanical vibration and cavitation effects on the medium. When the ultrasonic wave vibrates, it can generate and transmit strong energy, causing the medium particles to enter the vibration state with a large speed and acceleration, so that the structure of the medium changes and the active ingredients enter the solvent; The phenomenon of the formation of cavitation bubbles in the liquid under the action of considerable destructive stress. According to the change of cavitation bubbles, ultrasonic cavitation is divided into steady-state cavitation and transient cavitation. The two cavitation phenomena exist almost simultaneously in liquid, and steady-state cavitation can be transformed into transient cavitation under certain conditions. . Steady-state cavitation refers to the cavitation generated when the sound intensity is less than 10W/cm2, which is regular and moderate. Transient cavitation refers to the cavitation generated when the sound intensity is greater than 10W/cm2, which is short-lived and violent; the cavitation bubbles rapidly expand and rupture in an instant. It is released from the inside to form a high temperature and high pressure environment, accompanied by a strong shock wave and micro-sonic flow, thereby destroying the cell wall structure, making it burst in an instant, and the effective components in the cell can be released directly into the solvent and fully mixed, thereby improving the submission rate. In addition, many secondary effects of ultrasonic waves, such as thermal effect, emulsification, diffusion, crushing, chemical effect, biological effect, cohesion effect, etc., can also accelerate the diffusion and release of rose active ingredients in solvents, and promote the full mixing of rose active ingredients with solvents. easy to extract.

The advantages of ultrasonic extraction of rose essential oil

1. High extraction rate, short time and good uniformity.

2. The realization of low, normal and high temperature can be monitored, adjustable and controllable.

3. Strong penetrating power and strong selectivity.

4. It can be equipped with a stirrer or a circulating pump, so that the rose and the solvent can be replaced more fully.

5. Avoid the influence of high temperature on the extracted components, and protect the thermally unstable components in the rose.

6. Easy to operate and simple process.