High voltage electric discharges assisted extraction of phenolic compounds from grape stems: Effect of processing parameters on flavan-3-ols, flavonols and stilbenes recovery

被引：41

作者：

Brianceau, Sylene ^{[1
]}

Turk, Mohammad ^{[2
]}

Vitrac, Xavier ^{[3
]}

Vorobiev, Eugene ^{[1
]}

机构：

[1] Univ Technol Compiegne, Univ Paris 04, Dept Genie Proc Ind,Ctr Rech Royallieu, Unite Transformat Integrees Mat Renouvelable UTC, BP 20529, F-60205 Compiegne, France

[2] Transformat Integrees Mat Renouvelable UTC ESCOM, Ecole Super Chim Organ & Minerale, Alle Reseau Jean Marie Buckmaster, F-60200 Compiegne, France

[3] Ctr Montesquieu, Lab Phenobio, 1 Alle Jean Rostand, F-33650 Martillac, France

来源：

INNOVATIVE FOOD SCIENCE & EMERGING TECHNOLOGIES | 2016年 / 35卷

关键词：

High voltage electric discharges; Polyphenols; Flavan-3-ols; Flavonols; Stilbenes; Extractability; IN-VITRO; POLYPHENOLS EXTRACTION; BIOLOGICAL-MEMBRANES; MASS-SPECTROMETRY; AQUEOUS-SOLUTION; RESVERATROL; ANTIOXIDANTS; ETHANOL; SEEDS; WATER;

D O I：

10.1016/j.ifset.2016.04.006

中图分类号：

TS2 [食品工业];

学科分类号：

0832 ;

摘要：

This work aimed at providing some novel aspects pertaining to flavan-3-ols, flavonols and stilbenes extraction from grape stems using high voltage electrical discharges (HVED). Treatment time, pH and ethanol concentration affecting the extractability of these compounds were optimized through response surface methodology. The results from the optimized extraction technique (pH = 2.5; Time = 4.0 ms: Ethanol = 50%) were compared to a conventional hydro-alcoholic extraction. HVED improved significantly the extraction of flavan-3-ols and flavonols but was less efficient on stilbenes. The efficiency of HVED is directly correlated with the other processing conditions (pH, ethanol concentration). Prolonged HVED treatment at low pH value was a positive combination for flavan-3-ols. The proposed procedure (pH = 2.5; Time = 4.0 ms; Ethanol = 50%) allowed the release of almost 35% of additional phenolic compounds, which can be attributed to a better extractability of flavan-3-ols (+21%) and of flavonols (+12%), compared to conventional hydro-alcoholic extraction. (C) 2016 Elsevier Ltd. All rights reserved.

引用

页码：67 / 74

页数：8

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