What is principle of high pressure homogenizer?
The principle behind high-pressure homogenization is the sudden formation of turbulence, shear stress, and cavitation, caused by the mechanically induced movements of the algal cell suspension being forced to pass through a small-sized orifice (Fig. 11.3).
How does a high speed homogenizer work?
High shear homogenizers operate at a high velocity to pull, push and break apart a sample. Thus, they generate substantially smaller particles than some other kinds of homogenizers and are an especially good option for the following applications: Particle Size Reduction/Sub-Micron Homogenization.
What is the use of high pressure homogenizer?
High-pressure homogenizers are most commonly used for creating emulsions and for cell lysis when relatively large volumes are being processed. These are also the kinds of homogenizers used in the dairy industry, albeit on a larger scale.
How do you calculate homogenization efficiency?
The Farrall Index is a microscopic method for determining homogenization efficiency, based on the number of droplets having a diameter of < 2 µ. A Farrall index ranging from 5 to 7 implies “excellent” homogenization efficiency.
What is rotor stator homogenizer?
Rotor-stator homogenizers consist of a fast-spinning inner rotor with a stationary outer sheath (stator) to homogenize samples through mechanical tearing, shear fluid forces, and / or cavitation (the rapid forming and collapsing of bubbles).
What is homogenizer pump?
It is a physical process that mixes immiscible liquids into an emulsion. The homogenizer is basically a positive displacement pump to which a homogenizing valve is attached. The fluids entering the homogenizer are forced through a small gap at high pressure.
For what purpose homogenizer is used?
A homogenizer is a piece of laboratory or industrial equipment used for the homogenization of various types of material, such as tissue, plant, food, soil, and many others. Many different models have been developed using various physical technologies for disruption.
What is the cavitation in high pressure homogenizer?
Pressure changes during homogenization can cause the formation of bubbles in liquid samples. These bubbles (cavities) grow and eventually implode. The whole process is known as cavitation. When the bubbles implode, a large amount of energy is released.
What is a homogeniser used for?
How much pressure does a high pressure homogenizer?
The pressure of a conventional homogenizer is within 15,000 psi, while a high pressure homogenizer can achieve 30,000 psi, and an ultra-high pressure homogenizer can reach up to 60,000 psi.
What are the applications of high pressure?
Similar to the addition or removal of heat, application of elevated pressures (100–800 MPa) can be used for a variety of food processing and preservation applications, including freezing and thawing, blanching, pasteurization, and commercial sterilization.
What is the principle of high pressure homogenizer?
High Pressure Homogenizer – Principle of Working. High Pressure Homogenizer- When material(Fluid) passes orifice module under ultra high pressure condition, supersonics speed is formed by a rapid decrease in pressure. At this very moment, the material can be cell destruction, atomization, emulsion, dispersion, and liposome by impact,…
What is the maximum pressure required for homogenizing head?
The high pressure, in the range of 20 to 70 MPa, is necessary to overcome the friction in the homogenizing head. The homogenizing head houses the narrow gap assembly (homogenizing valve) which comes in different forms, according to design.
What are the disadvantages of a high-pressure homogenizer?
High-pressure homogenizers tend to be large and extremely heavy. High-pressure homogenizers should not be used if your sample contains too much particulate or solid matter, as this could clog the openings in the valves.
What is a homogenizing head on a valve?
The homogenizing head houses the narrow gap assembly (homogenizing valve) which comes in different forms, according to design. The head may contain one valve (single-stage homogenization) or two valves in series (two-stage homogenization).