Abstract
Este estudo objetivou avaliar a influência da temperatura do ar de secagem sobre o teor de óleo essencial extraído de guaco. Os testes de secagem foram realizados em um secador de leito fixo, o qual contém 4 bandejas perfuradas com fluxo de ar ascendente. Os tratamentos consistiram de cinco temperaturas do ar de secagem (ar ambiente e ar aquecido a 40, 55, 70 e 85oC), com três repetições, utilizando-se 850 g de folhas frescas de guaco. As folhas de guaco foram secas até atingir um teor de água final de, aproximadamente, 10% b.u. A velocidade do ar de secagem foi de 0,5 m s-1. A extração do óleo essencial foi realizada por hidrodestilação, usando o equipamento Clevenger. Os resultados do teor de óleo essencial mostraram que as temperaturas do ar de secagem de 55 até 85oC não influenciaram estatisticamente a quantidade de óleo essencial extraído. O perfil cromatográfico do óleo essencial apresentou mudanças em função dos tratamentos de secagem, quando comparados com a planta in natura (testemunha).
Highlights
Global interest in phytopharmaceutical products has increased, even among pharmaceutical companies, and some new policies focused on herbal products are emerging, promoting the use, standardization and development of reliable analytical methods of quality control to support their safety and efficacy
The commercialization of medicinal plants and phytotherapy products is expanding around the world due to factors such as the high cost of industrialized medicines, the lack of access to chemotherapy products by a large portion of the population and the tendency of consumers to preferentially use organic products (LOW et al, 1999)
Pharmacological studies have confirmed the anti-inflammatory properties of the crude extract of the guaco, while chemical studies point to coumarins and ent-kaurenoic acid as the main constituents of this species (VIEIRA et al, 2002)
Summary
Global interest in phytopharmaceutical products has increased, even among pharmaceutical companies, and some new policies focused on herbal products are emerging, promoting the use, standardization and development of reliable analytical methods of quality control to support their safety and efficacy. Mikania glomerata Sprengel (Compositae) is popularly known in Brazil as “guaco”. It is a perennial, climbing plant with smooth wooden brown cylindrical branches and green leaves with flat margins. Flowering does not occur in all regions of Brazil but is most common in the south (LOW et al, 1999). It is used in folk medicine for the treatment of fever, rheumatism, and illnesses of the respiratory tract (VILEGAS et al, 1997). Pharmacological studies have confirmed the anti-inflammatory properties of the crude extract of the guaco, while chemical studies point to coumarins and ent-kaurenoic acid as the main constituents of this species (VIEIRA et al, 2002)
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
