influência da temperatura do ar de secagem sobre o teor e a composição química do óleo essencial de lippia alba (mill) n. e. brown
;Fabrizio da F. Barbosa;Luiz C. A. Barbosa;Evandro C. Melo;Fernando Mendes Botelho;Ricardo H. S. Santos
greece and rome2006Vol. 29pp. 1221-1225
172
barbosa2006qumicainfluncia
Abstract
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.