Beatrice Lang
High-intensity pulsed electric fields (HIPEF) are an innovative technique with a wide range of applications, from food and pharmaceutical production to cancer treatment. HIPEF is a development of conventional pulsed electric field (PEF) technology, providing higher electric field intensity and a continuous extraction system. In the food industry, HIPEF has been used to enhance the lethal effect of pulsed electric fields in milk by combining them with antimicrobial compounds. It has also been used to extract bioactive compounds from Mediterranean plant-based foods. In medicine, HIPEF has been used to treat cancerous skin cells, causing melanomas to self-destruct. It has also been used for electrochemotherapy, where activation of the immune response contributes to the treatment outcome.
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What You'll Learn
- Pulsed electromagnetic fields (PEMF) can be used for therapeutic purposes, such as treating chronic pain and accelerating healing times
- High-intensity pulsed electric fields (HIPEF) can be used to extract bioactive compounds, such as antimicrobial compounds from milk
- Pulsed electric field (PEF) processing is an efficient food processing technique that can be used to inactivate microbes without compromising sensory and functional values
- PEF can be used to enhance the functional properties of food proteins, such as solubility, gelling, emulsifying, and foaming properties
- High-intensity pulsed electromagnetic fields (HI-PEMF) can increase cell membrane permeability and influence intracellular signal transduction pathways
Pulsed electromagnetic fields (PEMF) can be used for therapeutic purposes, such as treating chronic pain and accelerating healing times
Pulsed electromagnetic field (PEMF) therapy is a notable advancement in the realm of medical treatments. It involves the use of electromagnetic fields to address a wide range of conditions, including musculoskeletal disorders, chronic pain, and accelerated healing. PEMF therapy has been shown to be particularly effective in treating chronic pain and accelerating healing times, making it a valuable therapeutic modality.
PEMF therapy operates by intricately modulating cellular activities and metabolic pathways, demonstrating its adaptability across diverse clinical contexts. The therapy uses solenoids in contact with the skin to emit a low-frequency, high-intensity electromagnetic field. This field interacts with the body's natural electrical activities, influencing cellular behaviour and accelerating healing processes. One of the key mechanisms of PEMF therapy is its ability to induce electrical changes around and within cells, improving blood supply and increasing oxygen pressure, which activates and regenerates cells.
The use of PEMF therapy has been extensively studied in the treatment of musculoskeletal disorders, including delayed union or nonunion fractures, osteoarthritis, osteoporosis, osteonecrosis, and tendon disorders. It has been found to be a safe and non-invasive treatment option, without apparent side effects. PEMF therapy has also been shown to be effective in reducing pain and inflammation in bones, muscles, and joints, making it a valuable tool for managing chronic pain.
Furthermore, PEMF therapy has been found to increase bone tissue regeneration, making it useful in dental applications for stimulating bone growth and expediting orthodontic procedures. The combination of mechanical stress and electromagnetic field intervention accelerates treatment times and holds the potential to revolutionize dental care. In addition, PEMF therapy has been explored as a treatment for depression, with research indicating its ability to influence crucial cellular processes such as cell differentiation and proliferation by modulating metabolic pathways.
While PEMF therapy has shown promising results in various therapeutic applications, more research and clinical investigations are recommended before widely adopting this treatment modality. Well-designed, high-quality studies are necessary to standardize treatment parameters and derive optimal protocols for healthcare decision-making. However, with its ability to treat a wide range of pathologies and accelerate healing times, PEMF therapy holds great potential as a safe and effective therapeutic option.
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High-intensity pulsed electric fields (HIPEF) can be used to extract bioactive compounds, such as antimicrobial compounds from milk
High-intensity pulsed electric fields (HIPEF) is an innovative technique for extracting bioactive compounds from milk. The process involves applying microsecond, high-voltage pulses ranging from 10 to 60 kV. These pulses create pores in cell membranes, leading to a loss of barrier function, leakage of intracellular contents, and ultimately, cell death.
HIPEF has been shown to be effective in the extraction of antimicrobial compounds from milk. For example, the addition of nisin and lysozyme to milk, combined with HIPEF treatment, resulted in a synergistic effect, leading to a significant reduction of Staph. aureus. The final count of Staph. aureus resulting from this process depends on the sequence of application and the milk's pH. Further research is needed to fully understand the mode of action of synergism and the role of different process variables. However, the use of HIPEF in combination with antimicrobial compounds has shown potential in processing milk and dairy products.
The treatment time for HIPEF is very short, typically less than a second, with pulses applied at rates up to 500 pulses per second. The intensity of the treatment depends on various factors, including electrical parameters, product temperature, and recipe. This technique is particularly useful for extending the shelf life of liquid products, as it does not cause the quality damage associated with conventional heat treatments.
HIPEF has also been studied for its potential medical applications, such as gene electrotransfer (GET), which has been shown to improve DNA entry into muscle cells. Additionally, nanosecond pulsed electric fields (nsPEF) have been explored as a potential tumor therapy by inducing cell apoptosis or immunogenic cell death to prevent recurrence and metastasis. Overall, HIPEF offers a promising alternative to conventional extraction methods, especially in the food and medical industries.
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Pulsed electric field (PEF) processing is an efficient food processing technique that can be used to inactivate microbes without compromising sensory and functional values
Pulsed electric field (PEF) processing is an innovative food processing technique that uses short bursts of high-voltage electric fields to inactivate microbes and modify food structures. It is a non-thermal method that applies high-voltage pulses of 20–80 kV/cm with durations ranging from milliseconds to microseconds. This technique can be used on both liquid and solid foods, with the electric field applied as exponentially decaying, square wave, bipolar, or oscillatory pulses.
The PEF process involves placing the food between two electrodes and creating high-voltage electrical impulses. These impulses cause electro-compression in the cell membranes of microorganisms, forming pores that can be either reversible or irreversible. Reversible pores close automatically after a short time, while irreversible pores, created by higher intensity pulses and longer treatment times, cause permanent damage to the cell, leading to microbial inactivation. This process is known as electroporation and has been shown to increase cell membrane permeability.
PEF technology offers several advantages in food processing. It can be used as an efficient pasteurization technique, enhancing processes such as drying, freezing, and extraction. PEF can also support the development of functional foods by improving the absorption of essential ions and elements. Additionally, it reduces the need for chemical additives, tenderizers, and heavy mechanical processing. For example, PEF has been successfully applied in the potato processing industry to soften potatoes and prevent enzyme activity, eliminating the need for heating.
Furthermore, PEF technology improves extraction efficiency, reduces extraction time, and minimizes damage to extracted nutrients. It has been shown to increase the extraction of polyphenols from fruits, vegetables, and leaves, enhancing their antioxidant activity. PEF is also useful in extracting valuable compounds from microalgae, such as proteins and pigments, resulting in higher purity and eliminating the need for additional purification steps. Overall, PEF technology offers a more environmentally friendly and energy-efficient approach to food processing, responding to consumer demands for fresh-like, high-quality, and sustainably produced food products.
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PEF can be used to enhance the functional properties of food proteins, such as solubility, gelling, emulsifying, and foaming properties
Pulsed Electric Field (PEF) technology has recently gained considerable attention as a green technology to enhance the functional properties of food proteins. PEF is based on the direct application of power pulses to food material placed between two electrodes for micro- to nanoseconds. The magnitude and time course of PEF are controlled by a voltage generator and electrode geometry.
The structural changes in proteins due to PEF treatments can be attributed to the disruption of interactions between protein molecules, including disulfide and hydrogen bonds, as well as hydrophobic, electrostatic, and Van der Waals interactions. Additionally, the electric field can affect the strong dipole moment of the polypeptide chains, increasing the dielectric constant of proteins.
PEF technology has been shown to be effective in enhancing the solubility, gelling, emulsifying, and foaming properties of dairy and plant-based proteins, which are widely used in various food applications. The specific effects of PEF on these functional properties are not discussed in detail in the available literature, but the overall enhancement of these properties has been observed.
Overall, PEF is a promising technique for the food industry to improve the functional properties of food proteins, and further research is likely to focus on optimizing the PEF process for specific applications and protein sources.
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High-intensity pulsed electromagnetic fields (HI-PEMF) can increase cell membrane permeability and influence intracellular signal transduction pathways
High-intensity pulsed electromagnetic fields (HI-PEMF) are an emerging noninvasive and contactless alternative to conventional electroporation. The electric field inside the tissue is induced remotely by an externally applied pulsed magnetic field. HI-PEMF has been used successfully in the transfer of plasmid DNA and siRNA in vivo, with minimal or no infiltration of immune cells. In addition to gene electrotransfer (GET), HI-PEMF has shown potential for electrochemotherapy, where activation of the immune response is crucial.
Recent studies have reported that HI-PEMF can increase cell membrane permeability. This increase in permeability may be due to the high-intensity electric field pulses of short duration, similar to the mechanism of conventional electroporation. The ability of HI-PEMF to increase cell membrane permeability has been observed in different cell lines, including CHO, B16F1, and H9c2.
The impact of HI-PEMF on cell membrane permeability is also relevant in the context of immune response activation. HI-PEMF has been shown to induce the release of damage-associated molecular patterns (DAMPs) from damaged or dying cells, including adenosine triphosphate (ATP), calreticulin, and high mobility group box 1 protein (HMBG1). This release of DAMPs can trigger an immune response, which is a critical component of electrochemotherapy.
Furthermore, HI-PEMF has been found to influence intracellular signal transduction pathways. Intracellular signal transduction involves a chain of reactions that transmit signals from the cell surface to intracellular targets, ultimately leading to changes in gene expression. Studies have shown that HI-PEMF can influence these pathways, as well as cytoskeletal proteins involved in cell shape modification, mitochondrial membrane potential, and the production of reactive oxygen species (ROS).
The effects of HI-PEMF on cell membrane permeability and intracellular signal transduction pathways have potential therapeutic applications. By influencing these cellular processes, HI-PEMF can be used for gene electrotransfer, electrochemotherapy, and potentially other treatments that rely on immune response activation or intracellular signaling modulation. Further research is ongoing to fully understand the effects of HI-PEMF on biological systems and its potential applications in medicine.
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Frequently asked questions
HIPEF therapy, also known as Pulsed Electromagnetic Field (PEMF) therapy, uses short radio waves or solenoids to generate electromagnetic fields. These electromagnetic fields can then be used to treat different pathologies of bones, muscles, and joints.
HIPEF therapy works by reactivating the communication process between the inside and outside of cells. This accelerates the healing times of the tissue being treated. The electromagnetic field is emitted either continuously or at precise intervals with a preset depth and frequency.
HIPEF therapy is ideal for treating chronic pain and inflammation related to the musculoskeletal system. This means that the majority of areas of the body from the neck down to the feet can be treated.
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