Supercritical carbon dioxide extraction of brewer's spent grain

被引：41

作者：

Spinelli, Sara ^{[1
]}

Conte, Amalia ^{[1
]}

Lecce, Lucia ^{[1
]}

Padalino, Lucia ^{[1
]}

Del Nobile, Matteo Alessandro ^{[1
]}

机构：

[1] Univ Foggia, Dept Agr Sci Food & Environm, I-71122 Foggia, Italy

来源：

JOURNAL OF SUPERCRITICAL FLUIDS | 2016年 / 107卷

关键词：

Brewer's spent grain; Supercritical fluid extraction; Phenolic content; Flavonoids; DPPH; FLUID EXTRACTION; CO2; EXTRACTION; BY-PRODUCTS; FLAVONOIDS; PROPOLIS;

D O I：

10.1016/j.supflu.2015.08.017

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Brewer's spent grain (BSG) is the major by-product of brewing industry, produced in large quantities annually. Generally, it has been mainly used as feedingstuff but it was demonstrated that it contains a number of potentially high-value components. The aim of this work was to find proper supercritical fluid extraction (SFE) conditions to give bioactive compounds from BSG. The effects of three factors including pressure (15-35 MPa), temperature (40-60 degrees C) and CO2 + ethanol (0-60% ethanol concentration, v/v) were investigated. Among the extraction variables, the best conditions were found considering the criterion of maximum concentration of phenolic compounds (0.35 +/- 0.01 mg/g BSG), flavonoids (0.22 +/- 0.01 mg/g BSG) and antioxidant potential, evaluated by the ability to scavenge 2,2-diphenyl-1-picrylhydrazyl (DPPH) free radical (2.09 +/- 0.04%/g BSG): 35 MPa of pressure, 40 degrees C of temperature and CO2 + 60% ethanol (v/v). (C) 2015 Elsevier B.V. All rights reserved.

引用

页码：69 / 74

页数：6

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