scholarly journals Evaluation of Pulsed Electric Field Polyphenol Extraction from Vitis vinifera, Sideritis scardica and Crocus sativus

2021 ◽  
Vol 5 (2) ◽  
pp. 25
Author(s):  
Achillia Lakka ◽  
Eleni Bozinou ◽  
Dimitris P. Makris ◽  
Stavros I. Lalas
Keyword(s):  
Electric Field ◽  
Vitis Vinifera ◽  
Pulsed Electric Field ◽  
Crocus Sativus ◽  
Total Polyphenols ◽  
Total Polyphenol ◽  
Short Pulses ◽  
Aerial Parts ◽  
Polyphenolic Profile ◽  
Lower Electric Field

This study exploited the application of pulsed electric field (PEF) on the recovery of polyphenols from aerial parts of Sideritis scardica, tepals of Crocus sativus, and fruits of Vitis vinifera. Short pulses of 10 μs in a period of 1 ms were applied to the plant material, while different electric field intensities, 1.2 to 2.0 kV/cm were tested to optimize the procedure. The content in total polyphenols and the polyphenolic profile of the plant extracts were evaluated. Along with PEF samples, control samples were prepared for comparison. PEF treatment enhanced the recovery in total polyphenols for all the three plants examined. A significant increase was noticed in each plant tested and PEF condition applied, though lower electric field intensities up to 1.4 kV/cm proved to be more effective. Under the optimum electric field intensities, 1.4 kV/cm for V. vinifera and 1.2 kV/cm for S. scardica and C. sativus, increases of 49.15%, 35.25%, and 44.36% in total polyphenol content, respectively, were achieved. Additionally, an 85% increase of quercetin 3-rutinoside for V. vinifera, a 56% of apigenin 7-O-glucoside for S. scardica, and a 64% increase for kaempferol 3-O-glucoside for C. sativus were obtained.

scholarly journals Enhancement of Polyphenols Recovery from Rosa canina, Calendula officinalis and Castanea sativa Using Pulsed Electric Field

Beverages ◽  
2021 ◽  
Vol 7 (3) ◽  
pp. 63 ◽  
Author(s):  
Achillia Lakka ◽  
Eleni Bozinou ◽  
Giorgos Stavropoulos ◽  
Iordanis Samanidis ◽  
Vassilis Athanasiadis ◽  
...  
Keyword(s):  
Electric Field ◽  
Castanea Sativa ◽  
Monitoring And Evaluation ◽  
Pulsed Electric Field ◽  
Calendula Officinalis ◽  
Polyphenol Content ◽  
Plant Materials ◽  
Total Polyphenol ◽  
Rosa Canina ◽  
Total Extraction

The current study evaluates the Pulsed Electric Field (PEF) technique for the extraction of polyphenols from the plants Rosa canina, Calendulaofficinalis and Castanea sativa. These plants are traditionally used both for the preparation of therapeutic decoctions and the aromatization of beverages (alcoholic or not). Pulses of 10 μs duration were used to apply electric field intensities ranging from 1.2 to 2.0 kV cm−1. The period of the phenomenon was set to 1 ms, with a total extraction time of 20 min. The total polyphenol content as well as the identified polyphenolic compounds of the extracts were determined for monitoring and evaluation. To estimate the PEF effect, control extracts were prepared using the same process as PEF extracts but without the application of electric field. For all the three plant materials studied, the PEF technique appeared to be successful in increasing polyphenols extraction. The application of a moderate to high electric field, up to 1.4 kV cm−1, resulted in increased total and individual polyphenols recovery, reaching 63.79% and 84%, respectively, in the case of Rosa canina fruits.

Effects of Pulsed Electric Field on Secondary Metabolism of Vitis vinifera L. cv. Gamay Fréaux Suspension Culture and Exudates

2010 ◽  
Vol 164 (4) ◽  
pp. 443-453 ◽  
Author(s):  
Zhenzhen Cai ◽  
Heidi Riedel ◽  
Nay Min Min Thaw Saw ◽  
Onur Kütük ◽  
Inga Mewis ◽  
...  
Keyword(s):  
Electric Field ◽  
Suspension Culture ◽  
Vitis Vinifera ◽  
Secondary Metabolism ◽  
Pulsed Electric Field ◽  
Vitis Vinifera L

Influence of Pulse Width on Polyphenol Extraction from Agricultural Products by Pulsed Electric Field

2013 ◽  
Vol 133 (2) ◽  
pp. 32-37 ◽  
Author(s):  
Akira Nakagawa ◽  
Hitoshi Hatayama ◽  
Koichi Takaki ◽  
Shoji Koide ◽  
Yukio Kawamura
Keyword(s):  
Electric Field ◽  
Pulse Width ◽  
Pulsed Electric Field ◽  
Agricultural Products ◽  
Polyphenol Extraction

Development of PEF extraction technology by Maguin

2015 ◽  
pp. 758-760
Author(s):  
Romain Delecourt ◽  
Loïc Marsal
Keyword(s):  
Sugar Beet ◽  
Electric Field ◽  
Pulsed Electric Field ◽  
Extraction Technology ◽  
Application System ◽  
Wide Range ◽  
Type Machine

Maguin (France) is still active in the application of pulsed electric field (PEF) technology. After having carried out successful tests on a 10 t/h pilot screw-type machine on sugar beet cossettes, a new application system based on a roller technology has been developed. This technology allows a wide range of application due to its flexibility with flowrates and materials. A variety of process schemes are proposed to ensure the best performance of the PEF technology.

Effect of pulsed electric field on properties and multi-scale structure of japonica rice starch

LWT ◽  
2019 ◽  
Vol 116 ◽  
pp. 108515 ◽  
Author(s):  
Chunsen Wu ◽  
Qiu-Yan Wu ◽  
Mangang Wu ◽  
Wei Jiang ◽  
Jian-Ya Qian ◽  
...  
Keyword(s):  
Electric Field ◽  
Pulsed Electric Field ◽  
Scale Structure ◽  
Rice Starch ◽  
Japonica Rice ◽  
Multi Scale
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