摘要
分别采用水蒸气蒸馏和同时蒸馏萃取法对香叶天竺葵精油和纯露的挥发性成分进行提取,通过气相色谱-质谱联用技术结合保留指数分析鉴定其化学组成,用峰面积归一化法确定各成分的相对含量。结果表明,香叶天竺葵精油中鉴定出71种化合物,主要成分有香茅醇、甲酸香茅酯、香叶醇、异薄荷酮、β-古芸烯、芳樟醇和惕各酸苯乙酯等;香叶天竺葵纯露中鉴定出39种化合物,主要成分有香茅醇、芳樟醇、香叶醇、异薄荷酮、α-松油醇、顺式芳樟醇氧化物和反式芳樟醇氧化物等。其中香叶天竺葵纯露中的挥发性成分大多存在于香叶天竺葵精油中,但含量存在较大的差异。采用DPPH自由基和羟基自由基清除试验对香叶天竺葵精油和纯露的抗氧化活性进行评价。结果表明,香叶天竺葵精油和纯露均对DPPH自由基和羟基自由基具有一定的清除作用,香叶天竺葵纯露对DPPH自由基和羟基自由基的清除能力稍强于香叶天竺葵精油。
Volatile components of essential oil and aqueous extract from Pelargonium graveolens L′Herit. were prepared separately by steam distillation （SD）method and simultaneous distillation-extraction （SDE） method. Their compositions and relative contents were identified by gas chromatography-mass spectrometry （GC-MS）with retention index （RI）and peak area normalization method. Results show that a total of 71 volatile compounds are identified from the geranium essential oil,the main constituents being citronellol, citronellyl formate,geraniol,isomenthone,β-gurjunene,linalool and phenylethyl tiglate. A total of 39 volatile compounds are identified from the geranium aqueous extract,the main constituents being citronellol,linalool, geraniol,isomenthone,α-terpineol,cis-linalool oxide and trans-linalool oxide. The vast majority of volatile components in geranium aqueous extract exists in geranium essential oil,but their content is obviously different. Antioxidation activity of the essential oil and the aqueous extract were evaluated with 1,1-diphenyl -2-picrylhydrazyl （DPPH）radical and hydroxyl radical scavenging methods. The experimental results show that both the geranium essential oil and the geranium aqueous extract display certain DPPH and hydroxyl radical scavenging activities. The DPPH and hydroxyl radical scavenging activity of geranium aqueous extract is higher than that of geranium essential oil.
出处
《日用化学工业》
CAS
CSCD
北大核心
2017年第8期463-467,共5页
China Surfactant Detergent & Cosmetics
基金
云南省应用基础研究计划资助项目(2011FZ095)
关键词
香叶天竺葵精油
香叶天竺葵纯露
挥发性成分
抗氧化
geranium essential oil
geranium aqueous extract
volatile components
antioxidation
作者简介
任洪涛（1974-），男，云南人，副研究员，电话：13987693150，E-mail：1493636439@qq．com。
通讯联系人：周斌，副研究员，硕士，电话：（0871）63138923，E-mail：1392415802@qq．com。
