Pilot study of countercurrent cold and mild heat extraction of sugar from sugar beets, assisted by pulsed electric fields

Recent Advances and Applications of Pulsed Electric Fields (PEF) to Improve Polyphenol Extraction and Color Release during Red Winemaking

“…Although the energy obtained is effective in destroying or inhibiting undesirable microorganisms, many unwanted secondary reactions leading to the loss of nutritional and sensorial quality of food have been highlighted in recent studies [5,6]. Mild thermal treatments are also applied to enhance mass transfer phenomena, obtaining the removal of water from food and the release of nutraceutical compounds; despite the temperature supply is limited compared to the pasteurization treatment, the use of heat in fresh food matrices potentially results in the deterioration of sensory properties [7][8][9].…”

Selective Extraction from Food Plants and Residues by Pulsed Electric Field

“…Better conservation of the tissue structure under cold conditions during electrical treatment would allow more pectins to remain in the cellular matrix. Recently, PEF-assisted pressing and aqueous extraction from sugar beets were intensively studied on the laboratory scale [18][19][20][21][22][23][24][25][26][27][28][29][30][31]. Different aspects were investigated, and it was shown that up to 82% of the overall yield could be achieved by two-stage pressing with an intermediate PEF application.…”

“…Recently, the scale-up study of PEF-assisted aqueous extraction of sugar using a pilot countercurrent extractor with 14 extraction sections was reported [31]. The sugar beet cossettes were prepared using industrial knives and PEF treatment of the cossettes was done with electric field strength E varying from 100 to 600 V cm −1 .…”

Cell membrane electroporation-Part 2: the applications

“…It has been shown that the quantity and purity of extracted components can be greatly increased relative to those achieved using conventional methods. One of the most promising industrial-scale applications is in sugar extraction from sugar beets (Figure 3) [11], [28].…”

“…It should be emphasized that membrane electroporation leading to increased permeability of the membrane to specific molecules is nonselective, i.e., molecules can be driven into or out of the cell, depending on their concentration gradients across the membrane [9]- [11].…”