Authors: Yingxue Hu,
Youn Young Shim,
Jianheng Shen,
Venkatesh Meda,
Martin JT Reaney
Identifier: CSBE19142
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Published in: CSBE-SCGAB Technical Conferences » AGM Vancouver 2019
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Description: Flaxseed (Linum usitatissimum L.) is an important commercial oilseed crop for industrial, food and feed purposes. Its seed has a high content of oil, dietary fiber and protein as well as bioactive compounds such as lignans. The principle lignan in flaxseed is secoisolariciresinol diglucoside (SDG), which is around 9~30 mg/g of defatted flaxseed meal. SDG has been found to have various health benefits such as anti-atherosclerosis, anti-cancer, and anti-inflammatory effects. These health benefits make SDG to have relatively high commercial value. SDG naturally exists in flaxseed in form of free SDG and polymer composed of SDG and 3-hydroxyl-3-methylglutaric acid. Traditional SDG production involves direct organic solvent extraction of flaxseed meal and alkaline hydrolysis. Membrane filtration is used to filtrate SDG polymer and alkaline such as KOH is followed to hydrolyze SDG polymer into SDG. However, since the form of SDG polymer is uncertain and inconstant, extraction yield is usually very low. The presence of alkaline also requires a complicated process in further purification. In this study, organic solvent extraction will be modified by introducing simple rotary evaporation; and alkaline hydrolysis will be replaced by ammonia hydrolysis. This modification avoids high cost on maintaining membrane filtration and also simplifies removal of alkaline. Moreover, resin purification will also be involved. The compared to the traditional method, the modified method gives higher SDG extraction yield and better purification efficiency with a simpler process and lower total cost. Presenter: yih018@mail.usask.ca; *Correspondence: martin.reaney@usask.ca
Keywords: Flaxseed, lignin, secoisolariciresinol diglucoside, extraction, purification
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Date: 2019-07-15
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Conference name: CSBE/SCGAB 2019 Annual Conference, Vancouver, BC, 14-17 July 2019.
Session name: Bioenergy and bioproducts 1
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Type: Presentation
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Publication type: Text.Abstract
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Coverage: Canada
Language 1: en
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Rights: Canadian Society for Bioengineering
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