期刊论文

Study on Separation and DPPH Radical Scavenging Activities of D-borneol from Leaves of Cinnamomum Camphora（L.） Pre

中文

湖南城市学院学报(自然科学版)

1672-7304

2018

27

3

64-68

10.3969/j.issn.1672-7304.2018.03.0014

黑茶金花湖南省重点实验室项目（2016TP1022）； 湖南城市学院大学生创新性项目（2017）；

本校为第一机构

以龙脑樟树叶为研究对象,采用超声波辅助水蒸气蒸馏的方法,以提取率为指标,通过单因素试验考察温度、料液比、颗粒目数及超声时间对天然冰片提取率的影响;然后采用正交试验选取最佳工艺条件;同时,对其进行清除DPPH·的抗氧化活性实验.实验结果表明,在温度112 ℃ ~114℃,料液比50 g︰600 mL、最佳目数10~20目、超声时间10 min的条件下,右旋龙脑粗品的提取率达2.02%;在60%乙醇溶液中进行重结晶,能得到片状冰片晶体且收率为93.11%;天然冰片还具有一定的清除DPPH·的能力.

In order to investigate the optimum extraction process and DPPH radical scavenging activities from leaves of a novel plant of Cinnamomum camphora (L.) Pre in vitro, the ultrasonic-steam distillation was used to extract the D-borneol. Four factors were studied in the present paper, and they were temperature, material to solvent ratio, particle mesh, and ultrasonic time. And then the DPPH radical scavenging activities was tested .The results showed that the optimal conditions were as follows: temperature 112 ℃~114 ℃, material to solvent ratio 5...