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| Extraction of secoisolariciresinol and its effect on stability of emulsion |
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| DOI：10.12166/j.zgyz.1003-7969/2020.01.020 |
| KeyWord:flaxseed lignan secoisolariciresinol diglucoside secoisolariciresinol lecithin-linseed oil emulsion |
| FundProject:国家自然科学基金 (31771938)； 国家重点研发计划(2017YFD0400200)；现代农业产业技术体系(CARS-17) |
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| Abstract: |
| Using flaxseed lignan extracts contained 50%secoisolariciresinol diglucoside(SDG)as hydrolysed raw material, the HCl concentration and hydrolysis time for preparation of secoisolariciresinol (SECO) were optimized, and crude SECO extract was further prepared by solvent extraction and vacuum freeze drying. Then SECO extract was applied to lecithin-linseed oil emulsion system, and the effects of crude flaxseed lignan extracts before and after hydrolysis on the stability of emulsion during the 65 ℃storage were studied. The results showed that the crude SECO extract contained 65% SECO (65% SECO) was obtained under the conditions of hydrolysis time 120 min and HCl concentration 1 mol/L. In the emulsion system stored at 65 ℃, the particle size of the 65% SECO emulsion group didnt change significantly, but that of the control group and the 50% SDG group increased. Compared with the control, 65% SECO and 50% SDG both could reduce the content of hydroperoxide by 11% and 27% after storge for 7 d. Therefore, 50% SDG had good inhibition effect on oil oxidation, but 65% SECO could significantly improve the physical stability of lecithin-linseed oil emulsion. |
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