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| Multible-extraction of functional components from flaxseed |
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| KeyWord:flaxseed functional component extraction process comprehensive utilization |
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| Abstract: |
| Flaxseed contained four kinds of functional components，such as flaxseed gum，flaxseed oil，flaxseed protein and lignan. The screening and comparison of multible-extraction process of functional components from flaxseed were studied. The process conditions of extracting flaxseed protein and lignan by one-step method were optimized by single factor experiment and orthogonal experiment. The results showed that the optimal conditions of one-step method and multible-extraction process were obtained as follows：with 40% ethanol solution as extraction solvent，ratio of material to liquid 1∶?20，alkaline content 0.07 mol，extraction temperature 50?℃，extraction time 2 h，extraction times twice and acid precipitation pH 4.4. Under these conditions，the yields of flaxseed gum，flaxseed oil，flaxseed protein and lignan were 9.67%，3946%，15.27% and 11.03%，respectively. The purity and extraction rate of lignan were 28% and 8383% respectively. The mutible- extraction process was simple，reasonable and feasible，which reduced the energy consumption and improved the additional value of products. The comprehensive utilization of flaxseed was realized. |
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