光果莸脂溶性成分分析及抗氧化活性研究

The lipidsolubility components analysis and antioxidant activity research of Caryopteris tangutica

目的分析光果莸脂溶性化学成分及抗氧化能力。方法通过气相色谱-质谱法(GC-MS)分析光果莸不同部位脂溶性成分,以脂溶性成分对自由基的清除率为指标,以半抑制浓度(IC50)值为参考指标,评价光果莸不同部位脂溶性提取物的抗氧化能力。结果分别从光果莸茎、叶、花脂溶性成分中鉴定出31、40、62种化合物,不饱和脂肪酸占多数。光果莸不同部位脂溶性成分均有较好的清除1,1-二苯基-2-三硝基苯肼(DPPH)和2,2-联氮-二(3-乙基-苯并噻唑-6-磺酸)二铵盐(ABTS)自由基的作用,其自由基清除率依次为叶<花<茎。结论光果莸脂溶性成分含有对人体有益的不饱和脂肪酸,并具有一定的抗氧化活性。

Objective To analyze the liposoluble components and antioxidant capacity of Caryopteris tangutica.Methods By using GC-MS,this paper analyzes liposoluble components of different positions of Caryopteris tangutica.By making the removal rate of free radicals with liposoluble components as the index,and making IC50 as reference indicators to evaluate the antioxidant capacity of lipidsoluble extracts of different parts.Results There are 31,40 and 62 compounds identified in the liposoluble components of the stems,leaves and flower,among which unsaturated fatty acids account for the most.The different parts of Caryopteris tangutica all play the role of clearing DPPH and ABTS+free radicals,and the clearing rate of leaves was greater than that of flowers and stems.Conclusion The unsaturated fatty acids in lipidsoluble components of Caryopteris tangutica are beneficial to the human body,and have antioxidant activity.