title: Enhanced Extraction of Oil from Flaxseed (Linum usitatissimum L.) Using Microwave Pre-treatment.
abstract: The effect of microwave (MW) pre-treatment on the extraction of flaxseed oil was investigated by hot extraction (HE). Nine MW pre-treatments were established, combining three MW radiation intensities (12, 18 and 24 W/g) and three MW radiation times of pre-treatment (90, 150 and 210 s). Extraction yield increased significantly with MW pre-treatments of flaxseed, and a max oil extraction yield (78.11%) can be obtained using MW pre-treatment at 18 W/g for 210 s. Scanning electronic microscopy showed that the microstructure of treated samples (18 W/g and 210 s) was modified compared with that of untreated samples. The fatty acid compositions (palmitic acid 5.85±0.01%, stearic acid 3.00±0.01%, oleic acid 17.64±0.07%, linoleic acid 16.16±0.06%, and linolenic acid 57.37±1.32%) of the oils extracted by the MW pre-treatments HE were similar with that of the conventional HE method. Results showed that fatty acid compositions of flaxseed oil were not affected by MW pre-treatments.
authors.affiliation: College of Food and Bioengineering, Henan University of Science and Technology.
authors.forename: Guangyue
authors.initials: G
authors.lastname: Ren
authors.forename: Wei
authors.initials: W
authors.lastname: Zhang
authors.forename: Shangde
authors.initials: S
authors.lastname: Sun
authors.forename: Xu
authors.initials: X
authors.lastname: Duan
authors.forename: Zhenshan
authors.initials: Z
authors.lastname: Zhang
mesh_terms: D005591:Chemical Fractionation / Q000379:methods*; D002849:Chromatography, Gas; D005227:Fatty Acids / Q000032:analysis; D019597:Flax / Q000737:chemistry* / Q000648:ultrastructure; D006358:Hot Temperature; D008043:Linseed Oil / Q000737:chemistry* / Q000302:isolation & purification*; D008855:Microscopy, Electron, Scanning; D008872:Microwaves; D011208:Powders
chemical_list: D005227:Fatty Acids; D011208:Powders; D008043:Linseed Oil