Extraction of Antioxidant Phenolic Compounds from Brewer's Spent Grain: Optimization and Kinetics Modeling

被引：39
作者：
Carciochi, Ramiro A. [1 ,2 ]
Sologubik, Carlos A. [1 ]
Fernandez, Maria B. [1 ,3 ]
Manrique, Guillermo D. [1 ]
D'Alessandro, Leandro Galvan [2 ]
机构：
[1] Univ Nacl Ctr Prov Buenos Aires, Fac Engn, Av Valle 5737, RA-7400 Olavarria, Argentina
[2] Univ Littoral Cote dOpale, Univ Artois, Univ Lille 1, ISA,ICV,Inst Charles Viollette,INRA,EA 7394, 48 Blvd Vauban, F-59000 Lille, France
[3] Consejo Nacl Invest Cient & Tecn, CICPBA, UNCPBA, Ctr Invest Fis & Ingn,Ctr Prov Bueno Aires,CIFIC, RA-7000 Tandil, Argentina
来源：
ANTIOXIDANTS | 2018年 / 7卷 / 04期
关键词：
brewer's spent grain; extraction; polyphenols; optimization; modeling; ASSISTED EXTRACTION; QUINOA SEEDS; POLYPHENOLS;
D O I：
10.3390/antiox7040045
中图分类号：
Q5 [生物化学]; Q7 [分子生物学];
学科分类号：
071010 ; 081704 ;
摘要：
The kinetics of polyphenol extraction from brewer's spent grain (BSG), using a batch system, ultrasound assistance, and microwave assistance and the evolution of antioxidant capacity of these extracts over time, were studied. The main parameters of extraction employed in the batch system were evaluated, and, by applying response surface analysis, the following optimal conditions were obtained: Liquid/solid ratio of 30:1 mL/g at 80 degrees C, using 72% (v/v) ethanol:water as the solvent system. Under these optimized conditions, ultrasound assistance demonstrated the highest extraction rate and equilibrium yield, as well as shortest extraction times, followed by microwave assistance. Among the mathematical models used, Patricelli's model proved the most suitable for describing the extraction kinetics for each method tested, and is therefore able to predict the response values and estimate the extraction rates and potential maximum yields in each case.
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页数：10
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