RESUMEN La pandemia del Covid-19 impactó en los distintos niveles educativos, incluido el universitario. En este sentido, se adecuaron los contenidos de los seminarios y trabajos prácticos de Farmacognosia, materia del octavo cuatrimestre de la carrera de Farmacia de la Universidad de Buenos Aires, a la instancia virtual. A su vez, se recurrió a diversas estrategias e implementación de herramientas para fomentar la comunicación, la participación activa de los alumnos, el trabajo colaborativo y la comprensión de los contenidos. Los resultados obtenidos, referidos a la implementación de plataformas y recursos en los temas de procesos extractivos y grupos fitoquímicos I, son alentadores y demuestran el interés y participación de los alumnos contribuyendo al proceso de enseñanza-aprendizaje en la instancia virtual.

ABSTRACT The Covid-19 pandemic has impacted on different educational levels, including university. In this sense, the contents of the classrooms (seminars and practical works) of Pharmacognosy, subject of the eighth semester of Pharmacy studies of the University of Buenos Aires, were adapted to the virtual instance. At the same time, various strategies and the implementation of tools were used to promote communication, active participation of students, understanding of the contents and collaborative work. The results obtained, referring to the implementation of platforms and resources on the issues of extractive processes and phytochemical groups I, are encouraging and demonstrate the interest and participation of the students contributing to the teaching-learning process in the virtual instance.

O extrato aquoso das partes aéreas de Lippia integrifolia foi ensaiado quanto aos seus efeitos colerético e antiespasmódico. Doses de 250, 500 e 750 mg/kg administradas oralmente em ratos aumentaram significativamente o fluxo biliar e a saída de ácidos biliares. O extrato também exibiu uma significativa redução das contrações induzidas por acetilcolina, CaCl2 e KCl em jejuno isolado de rato. O conteúdo total de derivados dos ácidos cafeoilquínicos, expressado como ácido clorogênico foi de 0.10% w/v através de determinação espectrofotométrica.

The aqueous extract of the aerial parts of Lippia integrifolia has been assayed for its choleretic and antispasmodic effects. Doses of 250, 500 and 750 mg/kg administered orally in rats significantly increased the bile flow and the bile acid output. The extract also showed a significant reduction of the contractions induced by acetylcholine, CaCl2 and KCl on isolated rat jejunum. The total caffeoyl quinic acids derivatives content, expressed as chlorogenic acid was 0.10% w/v by spectrophotometric determination.