Results 11 to 20 of about 1,017 (151)

Secondary forest succession in the Mata Atlantica, Brazil: floristic and phytosociological trends. [PDF]

open access: yesInternational Scholarly Research Notices, Volume 2011, Issue 1, 2011., 2015
This study aimed at understanding the dynamics of ecological processes and the use of secondary forests in Santa Catarina state (Brazil). The data base for these studies was formed through forest inventories carried out in the three forest types of the ...
FANTINI, A. C.   +4 more
core   +2 more sources

Picramnia, genus with therapeutic potential / Picramnia, gênero com potencial terapêutico [PDF]

open access: yesBrazilian Journal of Animal and Environmental Research, 2022
En el presente trabajo se muestran los resultados del  aislamiento y dilucidación estructural de metabolitos secundarios de los extractos de tres especies de Picramnia, P. hirsuta, P. polyantha y P. antidesma. La evaluación de la bioactividad de los extractos de estas tres especies se realizó empleando el ensayo de A.
Ma. del Rosario Hernández Medel   +1 more
openaire   +3 more sources

Recycle HPLC: A Powerful Tool for the Purification of Natural Products [PDF]

open access: yesChromatography Research International, Volume 2013, Issue 1, 2013., 2013
Natural compounds occur as various isomeric or closely related structures in biological matrices. These compounds are difficult to separate from the complex mixtures, and hence, the need for effective and innovative separation techniques arises. Recycle HPLC allows the recycling of sample, in part or full, and increases the separation efficiency of the
Jasmeen Sidana   +2 more
core   +2 more sources

Triterpene benzoates from the bark of Picramnia teapensis (Simaroubaceae) [PDF]

open access: yesJournal of the Brazilian Chemical Society, 2001
Two new benzoic acid esters of triterpene alcohols [lup-20(29)-en-28-oic acid 3alpha,7beta-dibenzoate and 3alpha-hydroxy-lup-20(29)-en-28-oic acid 7beta-benzoate] were isolated from the stem bark of Picramnia teapensis Tul.
Rodríguez-Gamboa Tatiana   +10 more
doaj   +6 more sources

Unraveling the plant diversity of the Amazonian canga through DNA barcoding. [PDF]

open access: yesEcol Evol, 2021
Here we bring genetic information for the unique flora of the canga of the Serra dos Carajás in Eastern Amazon. DNA barcodes were obtained for 538 species, 323 genera, and 115 families of vascular plants, with 344 species being characterized for the first time.
Vasconcelos S   +21 more
europepmc   +2 more sources

The leaf breakdown of Picramnia sellowii (Picramniales: Picramniaceae) as index of anthropic disturbances in tropical streams [PDF]

open access: yesBrazilian Journal of Biology, 2015
There are few studies in tropical regions exploring the use of leaf breakdown process as a functional tool to assess anthropic disturbance on aquatic ecosystems.
M. P. Lopes   +3 more
doaj   +4 more sources

Medicinal Plants in the Prevention and Treatment of Colon Cancer. [PDF]

open access: yesOxid Med Cell Longev, 2019
The standard treatment for cancer is generally based on using cytotoxic drugs, radiotherapy, chemotherapy, and surgery. However, the use of traditional treatments has received attention in recent years. The aim of the present work was to provide an overview of medicinal plants effective on colon cancer with special emphasis on bioactive components and ...
Aiello P   +13 more
europepmc   +2 more sources

Activity of Cuban Plants Extracts against Leishmania amazonensis. [PDF]

open access: yesISRN Pharmacol, 2012
Natural products have long been providing important drug leads for infectious diseases. Leishmaniasis is a major health problem worldwide that affects millions of people especially in the developing nations. There is no immunoprophylaxis (vaccination) available for Leishmania infections, and conventional treatments are unsatisfactory; therefore ...
García M   +3 more
europepmc   +2 more sources

Una breve revisión del género Picramnia

open access: yesBrazilian Journal of Animal and Environmental Research, 2023
La presente comunicación tiene como objetivo hacer una breve reseña de los estudios químicos realizados a especies del género Picramnia (Picramniaceae), muchas de las cuales cuentan con usos medicinales tradicionales bien documentados. Aunado a lo anterior, varios de los metabolitos aislados de las especies consideradas, exhiben actividades biológicas,
Ma. del Rosario Hernández Medel   +1 more
openaire   +1 more source

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