Effect of drying air temperature upon the content and chemical composition of the essential oil from Lippia alba (Mill) N. E. Brown

Química Nova

Melo, Evandro C.¹  Botelho, Fernando Mendes¹  Santos, Ricardo H. S.¹  Universidade Federal de Viçosa, Viçosa, Brasil¹  Barbosa, Fabrizio da F.¹  Barbosa, Luiz C. A.¹ 

关键词: medicinal plant;    Lippia alba;    citral.;   

DOI  :  10.1590/S0100-40422006000600014

学科分类：化学（综合）

来源: Sociedade Brasileira de Quimica

【 摘 要 】

Leaves of Lippia alba were submitted to six different drying treatments, using air at ambient temperature and heated up to 80 °C. The essential oil was extracted by steam distillation and analyzed by GC-MS. For the dried leaves, the oil content was reduced by 12 to 17% when compared with the fresh plant (0.66%). The major oil component was citral, representing 76% for the fresh plant, and varying from 82 to 84% for the dried material. These results showed that L. alba can be submitted to a drying process of up to 80 ºC without degradation and/or loss of the major, [LC1] active component.

【 授权许可】

Unknown