Pulsed electric field pretreatment of rapeseed green biomass (stems) to enhance pressing and extractives recovery

Bioresource Technology
X YuE Vorobiev

Abstract

The objective of this study was to investigate the effects of pulsed electric field (PEF) pretreatment on the valorization of extractives (proteins and polyphenols) from rapeseed green biomass (stems) by pressing. The effect of pressure, electric field strength and pulse number on the juice expression yield, total polyphenols and total proteins content in the expressed juices were studied. Experiments conducted under optimal conditions (E=8kV/cm, tPEF=2ms, P=10bar) permitted to increase the juice expressed yield from 34% to 81%. Significant increases in total polyphenols content (0.48 vs. 0.10g GAE/100g DM), in total proteins content (0.14 vs. 0.07g BSA/100g DM) and in consolidation coefficient (9.0×10(-8) vs. 2.2×10(-8)m(2)/s) were also observed after PEF pretreatment. The recovered press cake was well dehydrated with an increase of dry matter content from 8.8% to 53.0%.

References

Aug 1, 1997·Critical Reviews in Food Science and Nutrition·T Beveridge
Oct 12, 2012·Phytochemical Analysis : PCA·Mohamed A FaragMohamed Abou el Fetouh
May 4, 2015·Bioresource Technology·Juan C López-LinaresInmaculada Romero

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Citations

Jan 6, 2017·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Meryem BoukroufaFarid Chemat
Feb 7, 2017·Bioresources and Bioprocessing·Adepu Kiran Kumar, Shaishav Sharma
Sep 19, 2017·Critical Reviews in Food Science and Nutrition·Xin-Li RanBenu Adhikari
Nov 4, 2020·Waste Management·Đurđica KovačićMarina Tišma

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