梅片树中高纯度右旋龙脑制备及其性质表征  

Preparation and Characterization of D-Boreonl from Leaves of Dryobalanops aromatica

作　　者：苏健裕[1,2] 梅国栋[1,2] 方立明[2,3] 黄滟波[1,2,4] SU Jianyu;MEI Guodong;FANG Liming;HUANG Yanbo(School of Food Science and Engineering, South China University of Technology, Guangzhou 510640, China;Guangdong Province Key Laboratory for Green Processing of Natural Products and Product Safety, Guangzhou 510640, China;School of Materials Science and Engineering, South China University of Technology, Guangzhou 510640, China;State Key Laboratory of Pulp and Paper Engineering, Guangzhou 510640, China)

机构地区：[1]华南理工大学食品科学与工程学院,广东广州510640 [2]广东省天然产物绿色加工与产品安全重点实验室,广东广州510640 [3]华南理工大学材料科学与工程学院,广东广州510640 [4]制浆造纸工程国家重点实验室,广东广州510640

出　　处：《食品科学》2017年第17期151-157,共7页Food Science

基　　金：广东省自然科学基金项目(2014A030313265);广东省科技计划项目(2016A010105020;2015A020209020;2015A020209036);广东省扬帆计划项目(201312H05);广州市科技计划项目(201707010129);华南理工大学中央高校基本科研业务费专项资金项目(2017ZD084)

摘　　要：通过水蒸气蒸馏法从梅片树叶中提取挥发油,冷冻、离心得粗右旋龙脑,用石油醚、120号汽油和无水乙醇分别进行重结晶,得到高纯度右旋龙脑晶体,并对晶体的成分、旋光性、形态和热性能进行了表征。结果表明,梅片树树叶挥发油中右旋龙脑含量为68.10%;重结晶后纯度达98%以上,质谱图分析结果和标准品基本一致,旋光度也相近;石油醚和120号汽油重结晶晶体呈规则六边形大片状,边界清晰,无水乙醇重结晶晶体形状不规则,呈分散或团聚的小颗粒状,但两者的热分析结果基本相同,说明重结晶晶体形貌不影响其热性能。右旋龙脑晶体非等温结晶过程中,莫志深方程能很好地描述右旋龙脑的非等温结晶动力学。本实验结果可为梅片树的综合利用及高纯度天然右旋龙脑新资源的研究开发提供参考。In this study,we investigated the preparation of highly pure D-borneol from the essential oil extracted from the leaves of Dryobalanops aromatica through steam distillation.Crude D-borneol was obtained after the essential oil was subjected to freeze-drying and centrifugation.Then,the crude product was purified by recrystallization in petroleum ether,120#gasoline,and anhydrous ethanol,respectively.The chemical composition,optical rotation,morphology and thermal properties of the as-obtained crystals were characterized.The results showed that the content of D-borneol in the essential oil was about68.10%,and its purity was more than98%after recrystallization.There were no obvious differences in mass spectrum or optical rotation between D-bormeol standard and the solvent recrystallized crystals.The appearance of the petroleum ether and gasoline120#recrystallized crystals showed regular hexagons with clear boundary,while the ethanol recrystallized crystal was irregularly and granularly dispersed or aggregated.However,the results of thermal analysis showed that the thermal properties of all three recrystallized crystals were the same,indicating that the appearance of crystals did not affect their thermal performance.Furthermore,Mo’s equation could describe the non-isothermal crystallization process of D-borneol crystal.This study can provide an important technical reference for the exploitation and utilization of Dryobalanops aromatica and the production of high-purity D-borneol.

关 键 词：梅片树 右旋龙脑 重结晶 晶型 高纯度 

分 类 号：TS202.3[轻工技术与工程—食品科学]