Processing of sugar beets with pulsed-electric fields

Schultheiss, Christoph; Bluhm, H.; Mayer, H.-G.; Kern, M.; Michelberger, T.; Witte, Geoffrey

doi:10.1109/tps.2002.804212

Cited by 43 publications

(15 citation statements)

References 2 publications

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“…KEA was used to demonstrate the advantages of PEF treatment for the production of sugar from beets compared with conventional techniques. The same juice yield was obtained for both thermal denaturation treatment at 72°C and PEF treatment, but with a significantly lower energy consumption (174 kJ/kg for thermal denaturation vs. 2-10 kJ/kg for PEF treatment) [109]. Further developments have led to a semi-industrial device for sugar beet pretreatment, with a maximum electric field strength of 300 kV/cm with microsecond pulse lengths, 1 kJ stored energy, and a repetition rate of 20 Hz [108].…”

Section: Sugar Beetssupporting

confidence: 59%

“…The efficiency of PEF treatment was demonstrated for juice expression from alfalfa [48], from apple mash [25,72,93,106], from carrot gratings [52,70,93], from peppers [4], from potatoes [31,73], and from sugar beet [43,61,91,94,108,109].…”

Section: Impact Of Pulsed Electric Field On Juice Expressionmentioning

confidence: 99%

“…In addition to the extraction of sugar from sugar beet [38,39,60,74,79,109], PEF has been used to enhance the recovery of soluble substances from apple tissue [59], from carrots [40], and chicory [76], polyphenols and antioxidants from artichoke bracts [22] and from fennel [37], betulin from mushrooms [126], betanine from red beetroot [46,78], and oil from rapeseed [53] and seed maize [54]. Some applications of PEF were also proposed for the recovery of polysaccharides from frog tissue [125] as well as of dissoluble calcium from bones [127].…”

Section: Impact Of Pulsed Electric Fields On Extraction and Recovery mentioning

confidence: 99%

“…Later, a pilot-scale electroporator was developed, using a Marx generator, capable of achieving appreciable energy savings since the treated beets could be extracted at much lower temperatures, for instance below 70°C, with the same sugar extraction, but higher purity since thermal denaturation of the cell walls is prevented [109].…”

Section: Sugarmentioning

confidence: 99%

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Applications of Pulsed Electric Field Treatments for the Enhancement of Mass Transfer from Vegetable Tissue

2010

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In the last decades, several non-thermal technologies have been proposed as alternative to the traditional ones to improve the competitiveness of the food industry. The key to success was identified in offering to food industries the opportunity to improve food quality, to introduce new foods in the market, and to optimize the processing procedures while reducing energy costs. Pulsed electric fields (PEF) showed the potential to be one of the most promising novel technologies to reach these objectives.\ud The application of PEF as a pretreatment of permeabilization of vegetable and animal tissue to enhance the efficiency of mass transfer of water or of valuable compounds from biological matrices demonstrated its efficiency in drying, extraction, and diffusion processes. \ud This article reviews the basic mechanisms of electroporation of plant tissues, discusses the methods of detection of electrically\ud induced cell damage, and analyses the influence of process parameters on the efficiency of the treatment.\ud Furthermore, this article focuses on the applications of PEF, its advantages, and energy costs in different fields of food processing, such as juice expression, drying, and extraction, with special emphasis on the relevance of PEF to the winemaking industry

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Section: Sugar Beetssupporting

confidence: 59%

Section: Impact Of Pulsed Electric Field On Juice Expressionmentioning

confidence: 99%

Section: Impact Of Pulsed Electric Fields On Extraction and Recovery mentioning

confidence: 99%

Section: Sugarmentioning

confidence: 99%

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Applications of Pulsed Electric Field Treatments for the Enhancement of Mass Transfer from Vegetable Tissue

2010

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“…The early works show that application of the low-gradient alternating electric fields (<100 V/cm) can enhance the juice extraction (Zagorulko, 1958) and increase the soluble matter diffusion coefficient in the sugarbeet (Jemai, 1997;Katrokha & Kupchik, 1984). More recently the efficiency of the industrial scale pulsed electric field (PEF) generators for sugarbeet processing was demonstrated (Frenzel, Michelberger, & Witte, 2004;Sack, Schultheiss, & Bluhm, 2005;Schultheiss et al, 2002).…”

Section: Introductionmentioning

confidence: 99%