Pulsed electric field in food preservation pdf

Pulsed electric field pef processing is a novel nonthermal preservation method that has the capability of producing foods with extended shelflife, excellent nutritional quality, and acceptable. By development of equipment based on state of the semiconductor. Pulsed electric field pef updated june 2006 page 1 of 2 supported by. Pulsed electric field pef used short electric pulses to preserve the food.

In recent days, a possible method of microbial deactivation in food is carried out by application of pulsed electric fields pef. High intensity pulsed electric field hipef processing involves. A pulsed electric field treatment device for the sterilization and preservation of pumpable food products having a at least two electrodes and an insulator and particularly suited for the inactivation of vegetative and bacterial spore microorganisms. Pulsed electric fields for food processing technology. Pulsed electric field processing in food technology. Food treatment has been carried by thermal or nonthermal methods. High intensity pulsed electric fields applied for food. Inactivation of microorganisms with pulsed electric fields. This technology is attracting a great deal of interest around the world because it is more cost effective than conventional systems due to the.

In electrical stimulation of meat, an electric field of 510vcm is applied as alternating current ac pulses to the sample through electrodes fixed at opposite ends of. Feb 23, 2018 pulse electric field technology could revolutionise the way we process food saving time, resources and nutrients. Pef technology aims to offer consumers highquality foods. Mar 09, 2006 to have food available all year round, preservation is essential. These include ohmic heating, microwave heating 46, low electric field stimulation 7,8, highvoltage arc discharge 912, and highintensity pulsed electric field pef application 15. Pulsed electric field technology in food processing industry. Preservation of foods with pulsed electric fields 1st edition. Us5690978a high voltage pulsed electric field treatment.

Pulsed electric fields in food preservation edisciplinas. These pulses induce poration of plant, animal and microbial cells, leading to cell disintegration and microbial inactivation. There is an innovative technology to process food and it has some great advantages. Pulsemaster pulsed electric field pef processing systems. Research article journal of food technology and preservation 2017 volume 1, issue 1. Pulsed electric fields for food processing technology intechopen. Various applications have been identified such as improvement of mass transfer during extraction or drying as well as gentle food preservation. New technology juices up the food industry youtube. Pulsed electric fields in food preservation 809 had no significant effect on the susceptibility of casein in skim milk proteolysis, and no significant change was observed in the susceptibility of casein suspended in a caseintris buffer when exposed to treatment conditions similar to those for skim milk 63. The concept of pulsed electric fields pef was first proposed in 1967 to change the behavior or microorganisms. Use of pulsed electric fields pefs for inactivation of microorganisms is one of the more promising nonthermal processing methods. Pulsed electric field technology in food preservation. Microorganisms in foods can be inactivated with pulsed electric fields at ambient or refrigerated temperatures for a short treatment time of less than a second and the.

It is one of the most appealing technology due to short treatment time typically below 1 second. Pulsed electric field pasteurisation of foods new food magazine. Ohmic heating is one of the earliest forms of electricity applied to food pasteurization 1. Abstract high voltage pulsed electric field pef treatment is a potential non.

Pulsed electric fields is suitable technological option for pasteurization, able to preserve valued bioactive compounds in beverages. Reviews the current status of pef technology with an overview of the process and its history. Introduction pulsed electric fields pef is a nonthermal method of food preservation that uses short pulses of electricity for microbial inactivation and causes. New methods are emerging and one that is likely to find its. Food preservation by pulsed electric fields request pdf. Food preservation by pulsed electric fields 1st edition. In this regard, pulsed electric field provides an alternative choice for various food products, particularly for liquid foods, for better preservation and maintenance of freshlike quality aspects.

For food quality attributes, pef technology is considered superior to traditional. Pulsed electric field pef processing is a novel, nonthermal preservation method that has the potential to produce foods with excellent sensory and nutritional quality and shelflife. Food preservation by pulsed electric fields and selected antimicrobials by bilge altunakar a dissertation submitted in partial fulfillment of the requirements for the degree of doctor of philosophy engineering science washington state university department of biological systems engineering december 2007. Sep 26, 2016 pulsed electric field technology in food preservation. There are many different ways of applying electric energy for food pasteurization. Pulsed electric fields pef technology is an innovative food processing system and it has been introduced in relatively recent times. Pulsed electric fields in food preservation mafiadoc. Pulsed electric field pef an emerging technology pulsed electric field pef treatment involves applying a short burst of high voltage to foods between two electrodes, and can be carried out at ambient or at refrigeration temperatures. Pdf pulsed electric field technology in food preservation.

Pulsed electric field pef technology is a nonthermal food preservation method that involves the use of short electricity pulses for microbial. Pef holds potential as a type of lowtemperature alternative pasteurization process for sterilizing food products. Sep 04, 2007 pulsed electric field pef applications can be utilised to achieve disintegration of biological tissues or microbes. Over the last decade, pef has attracted a significant interest from various food industries and found numerous applications. Pulsed electric field pef electroporation is a method for processing cells by means of brief pulses of a strong electric field. Try to imagine 21dayold orange juice that is just as healthy and tasty as on the day it was squeezed. Pulsed electric field is one of the emerging techniques to.

Recent advances and applications of pulsed electric fields pef to. Effect of pulsed electric field processing on flavor and. Food preservation by pulsed electric fields sciencedirect. Pdf pulsed electric fields for food processing technology juan. These include negative effects on colour, flavour and concentration of nutrients such as vitamins. An emerging technology for food preservation article pdf available january 2017 with 910 reads how we measure reads. Pulsed electric fields for food processing technology 279 3. Food preservation by pulsed electric fields is a standard reference for all those involved in research into pef food processing and its commercialisation. Pulsed electric field pef processing is an efficient nonthermal food processing technique using short, high voltage pulses. In the present work, pulse forming network pfn for generating high voltage rectangular pulses has been designed and developed. The principles of pulsed electric field the basic principle of the pef technology is the application of short pulses of high electric fields with duration of microseconds micro to milliseconds and intensity in the order of 1080 kvcm. Pulsed electric field for food processing technology. Pulsed electric field pef processing is a nonthermal method of food preservation.

Treatment by strong up to 300 kv cm1 pulsed electric fields pef has become of considerable interest as a nonthermal food processing and preservation technology. Discusses the technology involved in pef food preservation. In recent years, technological revolution, nutritional awareness, and continuous demand for new generation have necessitated the search for new techniques of food processing in industries. Pulsed electric fields pef is a nonthermal method of food preservation that uses short pulses of electricity for microbial inactivation and causes minimal detrimental effect on food quality attributes. Pulsed electric fields for food processing technology 299 however, additional increase in temperature from 20 to 33c did not result in any further increase in pef inactivation. Pulsemaster produces innovative pulsed electric field pef processing systems for cell disintegration and microbial inactivation in the food industry. In pef processing, a substance is placed between two electrodes, then the pulsed electric field is. Preservation of foods with pulsed electric fields discusses the basics of high voltage pef as a low temperature food processing method, and the application of this technology in food preservation. Apr 01, 2016 so, when an electrical field is applied, electrical current flows into the liquid food and is transferred to each point in the liquid because of the charged molecules present. The pulsed electric field pef technology is a mild food processing technology, suitable for preserving liquid and semiliquid food products. Correspondingly, this memoir highlights the potential of pulsed electric field technology as. Pulsed electric field is one of the emerging techniques to preserve the foods, especially the liquid ones such as milk, yoghurt, juices, soups, rice. The electric field phenomenon was identified as membrane rupture theory in the 1980s.

Pulsed electric fields pef is a nonthermal method of food preservation that uses short pulses of electricity for microbial inactivation and causes minimal. Pdf thermal inputs for food preservation generally dominate the food processing industry. The basic principle of the pef technology is the application of short pulses of high electric fields with duration of micro seconds micro to milliseconds and intensity in the order of 10 80 kvcm. Experimental validation on effects of pulsed electric. Pdf pulsed electric fields for food processing technology.

However, traditional preservation methods such as drying, salting, acidifying, fermenting and heat treatments, whilst providing specific advantages, also have drawbacks. Pulsed electric fields as an alternative to thermal. Application of pulsed electric field technology in food. Pulsed electric fields pef is a nonthermal method of food preservation that. Advantages of using pef technology in food processing. High intensity pulsed electric fields, often referred to as pulsed electric fields pef toepfl et al. In this video, we explain the features of one of the novel food processing technologies treated by i3 food project, the so called pulsed electric field preservation, or pef. Pulsed electric field processing of foods new food magazine. Experimental validation on effects of pulsed electric field treatment on the sensory quality of vegetable juices. Preservation of foods with pulsed electric fields sciencedirect. High intensity pulsed electric field hipef processing involves the application of pulses of high voltage typically 20 80 kvcm to foods placed between 2.

878 931 1094 682 656 1195 256 1124 639 1401 25 353 213 109 1021 234 1066 377 1179 788 379 125 219 1215 454 817 818 674 735 1330 356 324