Development of a Sustainable Process for the Solid-Liquid Extraction of Antioxidants from Oat

Sustainability

Raul Orozco-Mena¹  Iván Salmerón-Ochoa¹  Enrique Ortega-Rivas¹ 

[1] School of Chemical Science, Autonomous University of Chihuahua, Circuit 1, New University Campus, CP 31125 Chihuahua, Mexico;

关键词: oat;    process development;    sustainability;    polyphenols;    antioxidants;    solvent extraction;   

DOI  :  10.3390/su6031504

来源: mdpi

【 摘 要 】

This research paper studies the development of a sustainable process for the extraction of antioxidants from oat. Experimentation covered two factorials to evaluate significance among temperature, time, particle size and solvent. Total polyphenolic content (TPC) and oxygen radical absorbance capacity (ORAC) were the response variables. ANOVA was applied to find significance among variables and predict optimum conditions though a regression model. Extractions at different solid/solvent ratios were developed to study solvents’ solubility. Process simulation in Aspen Process Developer was carried out to evaluate energy cost, raw material cost, campaign time, and process mass intensity. Solvent and particle size showed significance as main effects, whereas temperature and time presented significance as interactions. From an industrial and sustainable perspective, ethanol (EtOH) in a 1/20 (w/v) ratio was the best choice since it presented the lowest cost for energy and raw material. It also showed the lowest process mass intensity (PMI), short campaign time, highest g extract/g oat, and a considerable antioxidant capacity.

【 授权许可】

CC BY   
© 2014 by the authors; licensee MDPI, Basel, Switzerland.