High -voltage pulse electric field (PEF) commercial market analysis
Chinese name: High -voltage pulse electric field, English name: High Intensity Pulled Electric Field, English abbreviation: HPEF
Generally, we generally refer to the high -voltage pulse electric field, referred to as: pulse electric field, English name: Pulled Electric Field, English abbreviation: PEF
A certain encyclopedia said that "high -voltage pulse electric field is one of the hot spots in the field of liquid food non -thermal treatment in recent years", and "Pulled Electric Fields (PEF) treatment is a new type of non -heat food sterilization technology."
In fact, these claims are a bit one -sided. The high -voltage pulse electric field is one of the most promising industrialized continuous production and the most commercial value processing technology in the past ten years. It can be widely used in the food industry, biomedical industry, cosmetics industry, and sewage treatment industry. Essence
For the mechanism of PEF, a high -voltage pulse electric field, there are many hypotheses now. Most researchers tend to identify the effects of electric field on cell membranes, which conducts dynamic derivation based on this. When the cell is in the electric field, the cell membrane is under the action of a strong electric field, which produces a repair that can be repaired or perforated, which damages the cell tissue and causes cells to lose. This phenomenon is called electro -perforation. The treatment of intracellular substances was applied. The more common model for cell membranes believes that the thickness of the cell membrane is about 7nm ~ 10nm, and the cell membrane can be equivalent to a flat capacitor with a low -dielectric constant electrical. The thickness of the electron is about 3nm. The critical potential of most cell membranes is between 0.7V ~ 2.2V.
Teissie et al. Pointed out that under the action of strong electric fields, the surface of the cell membrane continued to accumulate electrical loads, thereby inducing the transverse membrane potential. When the transverse membrane potential is greater than the critical potential, the cell membrane rupture form perforation.
Castro et al. The reason for explaining perforation is because the different number of charges accumulated in the two surfaces of the cell membrane attract each other and cause the membrane to squeeze. When this electrocomputer is greater than the elasticity of the membrane, the perforation is generated.
This phenomenon is called electro -perforation; this electric perforation is divided into irreversible electric perforation and reversible electricity perforation.
Irreversible electricity perforation, cell death, the size of the aperture is determined by the type of cells and the electrical parameters of the equipment. The water of the small pore diameter will naturally flow out, and the substances in the large pore cell will flow out.
Commercial application value is: food industry: for example, extraction and dryness in solid raw materials, use PEF as pre -processing steps to improve processing efficiency, speed and product quality; increase production capacity, increase production, save energy consumption, reduce production costs;
Biomedical cosmetics industry: enhance extraction, improve the efficiency, speed and product quality of processing
Reverse electricity perforation, cells do not die, and also allow nutrient solution, chemicals, drugs, or DNAs to be induced to introduce cells.
The value of commercial application is: gardening and flower industry: increase the survival rate of plants and greatly slow down flowers withering; seed industry: stimulate proliferation and increase survival rate; microalgae industry: stimulate proliferation, enrich the enrichment of metabolites;
The potential of this technology in decomposition plants, animal or microbial cells has been proven, pre -processing the tissue before extracting or drying, and preserving high -quality, frozen products or protein -containing medium has been determined to be promising. This technology can reach industrial scale; the German Food Technology Research Institute is developing prototype equipment.
