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| Effects of drying methods on yield and antioxidant activity of fat-soluble antioxidant components from Rosmarinus officinalis |
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| DOI： |
| KeyWord:Rosmarinus officinalis growing period drying method fat-soluble antioxidant component antioxidant activity |
| FundProject:湖南省教育厅双一流学科优秀青年项目（18B422）；邵阳市指导性科技计划项目（2020GZ87）；邵阳学院新引进高层次人才专项科研项目（17ZX16）；邵阳学院研究生科研创新项目(CX2020SY038) |
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| Abstract: |
| The optimal growth period was selected by studying the effect of different growth periods on the yield of fat-soluble antioxidant components (carnosic acid, carnosol and ursolic acid) in Rosmarinus officinalis，then the yield of Rosmarinus officinalis fat-soluble antioxidant components, the scavenging capacity of DPPH radical, ABTS+ radical, hydroxyl radical and iron reducing power were determined under different drying methods (shade drying, sun drying and hot air drying at 45 ℃) to investigate the effect of different drying methods on the antioxidant activity of Rosmarinus officinalis fat-soluble antioxidant components.The results showed that ten months was the optimal growth period for the accumulation of fat-soluble antioxidant components in Rosmarinus officinalis.Rosmarinus officinalis treated with hot air drying had the highest yield of fat-soluble antioxidant components, the strongest scavenging ability of DPPH radical, ABTS+ radical, hydroxyl radical and iron reducing power, but weaker than TBHQ, and its semi-inhibitory concentration(IC50) of scavenging DPPH radical, ABTS+ radical and hydroxyl radical were 0.034,0.068, 0.067 mg/mL,respectively.In general,the hot air-dried Rosmarinus officinalis grew for ten months showed stronger antioxidant activity,which could well retain the fat-soluble antioxidant components of Rosmarinus officinalis,and it was suitable for industrial production. |
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