目的石菖蒲挥发油无溶剂微波提取法的工艺优化及其成分分析。方法通过L9(34)正交试验,以α-细辛醚提取量、挥发油体积、3种细辛醚的百分比之和作为评价标准,进行综合评分,优选石菖蒲挥发油无溶剂微波提取法最佳提取工艺;采用GC-MS法对...目的石菖蒲挥发油无溶剂微波提取法的工艺优化及其成分分析。方法通过L9(34)正交试验,以α-细辛醚提取量、挥发油体积、3种细辛醚的百分比之和作为评价标准,进行综合评分,优选石菖蒲挥发油无溶剂微波提取法最佳提取工艺;采用GC-MS法对最佳工艺提取的挥发油定性分析,利用峰面积归一化法分析其主要成分,并与水蒸气蒸馏法提取的挥发油对比。结果 2种方法提取的挥发油中成分组成基本相同,石菖蒲中主要挥发性成分为α-细辛醚、β-细辛醚和γ-细辛醚,其在无溶剂微波提取法的百分比为4.12%、55.11%和10.54%,而水蒸气蒸馏提取法则分别为5.39%、47.03%和9.15%。从提取效率来看,无溶剂微波法提油0.235 m L耗时5 min,得α-细辛醚提取量为31.99 mg;水蒸气蒸馏法提油0.175 m L,需要1h,得α-细辛醚提取量为29.09 mg。结论无溶剂微波提取法是一种新的挥发油提取方法,可以缩短提取时间,增加提取效率。展开更多
An improved solvent-free microwave extraction（ISFME） was used for the extraction of essential oil from dried Cinnamomum cassia Presl. Two kinds of solid microwave absorption media[carbonyl iron powder（CIP） and gra...An improved solvent-free microwave extraction（ISFME） was used for the extraction of essential oil from dried Cinnamomum cassia Presl. Two kinds of solid microwave absorption media[carbonyl iron powder（CIP） and graphite powder（GP）] were used. When ISFME was applied, the heating rate was enhanced and the extraction time was obviously shorter than that consumed in conventional solvent-free microwave extraction（CSFME）. Twenty-eight kinds of compounds in the essential oil were identified, and the total content fractions of the compounds obtained by CIP-ISFME, GP-ISFME, CSFME, and hydrodistillation（HD） were 96.65%, 96.06%, 97.22%, and 96.29%, respectively. The compounds in the essential oil obtained from Cinnamomum cassia Presl. by ISFME, CSFME, and HD were compared and the quantity of the essential oil was almost the same. The ISFME has been proved to be a feasible way to extract essential oil from dried samples, and there are several obvious advantages in ISFME over those of HD and CSFME, for example, shorter extraction time（30 min） and lower energy consumption.展开更多
文摘目的石菖蒲挥发油无溶剂微波提取法的工艺优化及其成分分析。方法通过L9(34)正交试验,以α-细辛醚提取量、挥发油体积、3种细辛醚的百分比之和作为评价标准,进行综合评分,优选石菖蒲挥发油无溶剂微波提取法最佳提取工艺;采用GC-MS法对最佳工艺提取的挥发油定性分析,利用峰面积归一化法分析其主要成分,并与水蒸气蒸馏法提取的挥发油对比。结果 2种方法提取的挥发油中成分组成基本相同,石菖蒲中主要挥发性成分为α-细辛醚、β-细辛醚和γ-细辛醚,其在无溶剂微波提取法的百分比为4.12%、55.11%和10.54%,而水蒸气蒸馏提取法则分别为5.39%、47.03%和9.15%。从提取效率来看,无溶剂微波法提油0.235 m L耗时5 min,得α-细辛醚提取量为31.99 mg;水蒸气蒸馏法提油0.175 m L,需要1h,得α-细辛醚提取量为29.09 mg。结论无溶剂微波提取法是一种新的挥发油提取方法,可以缩短提取时间,增加提取效率。
文摘An improved solvent-free microwave extraction（ISFME） was used for the extraction of essential oil from dried Cinnamomum cassia Presl. Two kinds of solid microwave absorption media[carbonyl iron powder（CIP） and graphite powder（GP）] were used. When ISFME was applied, the heating rate was enhanced and the extraction time was obviously shorter than that consumed in conventional solvent-free microwave extraction（CSFME）. Twenty-eight kinds of compounds in the essential oil were identified, and the total content fractions of the compounds obtained by CIP-ISFME, GP-ISFME, CSFME, and hydrodistillation（HD） were 96.65%, 96.06%, 97.22%, and 96.29%, respectively. The compounds in the essential oil obtained from Cinnamomum cassia Presl. by ISFME, CSFME, and HD were compared and the quantity of the essential oil was almost the same. The ISFME has been proved to be a feasible way to extract essential oil from dried samples, and there are several obvious advantages in ISFME over those of HD and CSFME, for example, shorter extraction time（30 min） and lower energy consumption.
