Comparison of supercritical CO2 and hexane extraction of lipids from sorghum distillers grains

Total yields and compositions of sorghum dried distillers grains with solubles (DDGS) lipids obtained by supercritical CO2 (SC‐CO2) extraction were compared with those obtained by recirculated solvent extraction (RSE) with hexane. The total yield of lipids obtained by SC‐CO2 extraction at 27.5 MPa a...

Full description

Saved in:
Bibliographic Details
Published in:European journal of lipid science and technology 2007-06, Vol.109 (6), p.567-574
Main Authors: Wang, Lijun, Weller, Curtis L., Schlegel, Vicki L., Carr, Timothy P., Cuppett, Susan L.
Format: Article
Language:English
Subjects:
Biological and medical sciences
dried distillers grains with solubles
Fat industries
Food engineering
Food industries
Fundamental and applied biological sciences. Psychology
General aspects
hexane extraction
lipids
nutraceuticals
Supercritical CO2 extraction
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Total yields and compositions of sorghum dried distillers grains with solubles (DDGS) lipids obtained by supercritical CO2 (SC‐CO2) extraction were compared with those obtained by recirculated solvent extraction (RSE) with hexane. The total yield of lipids obtained by SC‐CO2 extraction at 27.5 MPa and 70 °C was 150 g lipids/kg DDGS, while the yield obtained by RSE with hexane at 69 °C was only 85 g lipids/kg DDGS. The contents of four high‐value compounds, i.e., policosanols, phytosterols, free fatty acids (FFA) and tocols, in the lipids obtained by SC‐CO2 extraction were 31.2, 15.6, 155.3 and 0.50 mg/g at 27.5 MPa and 70 °C, compared to 26.6, 9.6, 57.3 and 0.03 mg/g for RSE with hexane at 69 °C. The profiles of phytosterols and FFA in the sorghum DDGS lipids were relatively independent of the extraction methods and operating conditions.
ISSN:1438-7697
1438-9312
DOI:10.1002/ejlt.200700018