Rupture of glandular trichomes in Ocimum gratissimum leaves influences the content of essential oil during the drying method
2014
Santana, Ana Carolina M de | Pereira, Gabriel S. | Boaventura, Camila M. | Uetenabaro, Ana Paula T. | Costa, Larissa C. do B. | de Oliveira, Rosilene A.
Medicinal and aromatic plants are commonly sold dried; however, it is necessary to understand the effects different drying methods have on these materials, to ensure their efficiency and quality. Ocimum gratissimum L., Lamiaceae, is an aromatic plant whose essential oil is stored in glandular trichomes. This study aimed to confirm the effects of different drying temperatures and methods of O. gratissimum leaves on trichome integrity and essential oil content. Leaves dried in a forced ventilation oven at 60oC display damaged trichomes and a reduction in the essential oil content. The different drying methods (oven, dehumidification and air drying) were not identified to elicit changes in the essential oil content or damage to trichomes. All of the drying methods showed a reduction in fungal contamination in a logarithmic cycle.
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