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| Optimization of microwave pretreatment for cold pressing of Xanthoceras sorbifolia Bunge. seed by response surface methodology |
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| DOI：10.12166/j.zgyz.1003-7969/2020.03.003 |
| KeyWord:Xanthoceras sorbifolia Bunge. seed oil microwave pretreatment cold-pressing response surface methodology |
| FundProject:湖北省技术创新专项（2017ABA142） |
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| Abstract: |
| Xanthoceras sorbifolia Bunge. seed kernels were pretreated by microwave under different conditions, then the husks was added, and the oil was obtained by cold-pressing. The effects of microwave pretreatment on the yield and quality of Xanthoceras sorbifolia Bunge. seed oil were discussed. On the basis of single factor experiment, the process conditions were optimized by Box-Behnken response surface methodology. The optimal conditions were obtained as follows: water content of raw materials 8.3%, ratio of kernels to husks 9∶ 1, microwave time 5.4 min and microwave power 960 W. Under these conditions, the yield of Xanthoceras sorbifolia Bunge. seed oil was 56.79%, increasing by 10.42 percentage points compared with the yield(46.37%) of direct cold-pressed oil. Microwave pretreatment slightly increased the acid value and peroxide value of the oil, but had little effect on its fatty acid composition and content. |
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