Removal of phenolic compounds from de-oiled sunflower kernels by aqueous ethanol washing.

Autor: Jia W; Laboratory of Food Process Engineering, Wageningen University, PO Box 17, 6700 AA Wageningen, The Netherlands., Kyriakopoulou K; Laboratory of Food Process Engineering, Wageningen University, PO Box 17, 6700 AA Wageningen, The Netherlands., Roelofs B; Laboratory of Food Process Engineering, Wageningen University, PO Box 17, 6700 AA Wageningen, The Netherlands., Ndiaye M; R&D Department, Avril Groupe, Bruz, France., Vincken JP; Laboratory of Food Chemistry, Wageningen University, PO Box 17, 6700 AA Wageningen, The Netherlands., Keppler JK; Laboratory of Food Process Engineering, Wageningen University, PO Box 17, 6700 AA Wageningen, The Netherlands., van der Goot AJ; Laboratory of Food Process Engineering, Wageningen University, PO Box 17, 6700 AA Wageningen, The Netherlands. Electronic address: Atzejan.vandergoot@wur.nl.
Jazyk: angličtina
Zdroj: Food chemistry [Food Chem] 2021 Nov 15; Vol. 362, pp. 130204. Date of Electronic Publication: 2021 May 25.
DOI: 10.1016/j.foodchem.2021.130204
Abstrakt: Selective removal of phenolic compounds (PCs) from de-oiled sunflower kernel is generally considered a key step for food applications, but this often leads to protein loss. PC removal yield and protein loss were assessed during an aqueous or aqueous ethanol washing process with different temperatures, pH-values and ethanol contents. PC yield and protein loss increased when the ethanol content was < 60% or when a higher temperature was applied. Our main finding is that preventing protein loss should be the key objective when selecting process conditions. This can be achieved using solvents with high ethanol content. Simulation of the multi-step exhaustive process showed that process optimization is possible with additional washing steps. PC yield of 95% can be achieved with only 1% protein loss using 9 steps and 80% ethanol content at 25℃. The functional properties of the resulting concentrates were hardly altered with the use of high ethanol solvents.
(Copyright © 2021 The Author(s). Published by Elsevier Ltd.. All rights reserved.)
Databáze: MEDLINE
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