Results 51 to 60 of about 4,134 (157)

KARAKTERISASI SENYAWA DARI FRAKSI AKTIF ANTIBAKTERI DAUN Garcinia celebica linn (Kandis)

open access: yesChempublish Journal, 2016
Telah diisolasi 3-oxofridelin dari fraksi etil asetat yang merupakan fraksi aktif antibakteri dari daun Garcinia celebica (Guttiferae).  Struktur molekul senyawa ditetapkan berdasarkan data spektroskopi IR, 1H dan 13C NMR serta perbandingan data tersebut
Madyawati Latief
doaj  

Resilience of Indigenous healthcare systems: Ethnobotanical approaches among the Baka, southeastern Cameroon

open access: yesPeople and Nature, Volume 7, Issue 11, Page 2879-2894, November 2025.
Abstract Indigenous Peoples rely on biodiversity and traditional knowledge for health and well‐being, yet biological and cultural systems are threatened by ecological and social changes. Limited understanding exists on the factors that support the resilience of Indigenous Peoples' healthcare systems—the capacity of a healthcare system to adapt to ...
Sandrine Gallois   +8 more
wiley   +1 more source

A New Pyranoxanthone from Calophyllum soulattri

open access: yesMolecules, 2011
Our interest on xanthones from the Calophyllum genus has led us to a detailed study on the chemistry of the stem bark of Calophyllum soulattri. This gave one new pyranoxanthone, soulattrin (1), together with three other xanthones, caloxanthone B (2 ...
Soek Sin Teh   +5 more
doaj   +1 more source

The Light Bite: Red‐Nosed Cuxiu (Chiropotes albinasus, Primates) Exploit Differential Penetrability of Hard Fruit Husks When Selecting Dental Puncture Sites

open access: yesBiotropica, Volume 57, Issue 6, November 2025.
Red‐nosed cuxiu are specialists in unripe seeds of hard‐husked fruits, which they access with massive jaw muscles and enlarged canines. But this costs energy and risks tooth breakage. The monkeys reduce both by biting at the softest spots on the fruit surface.
Adrian A. Barnett   +15 more
wiley   +1 more source

Novel Polyprenylated Phloroglucinols from Hypericum sampsonii

open access: yesMolecules, 2014
Hypericum sampsonii Hance (Clusiaceae) is a folk medicine used in Taiwan to treat blood stasis, relieve swelling, and as an anti-hepatitis drug. Two new polyprenylated phloroglucinol derivatives, hypersampsone R (1) and hypersampsone S (2), and a known ...
Jih-Jung Chen   +2 more
doaj   +1 more source

Chemical Constituents of Mesua Ferrea L. And Piper Nigrum L. and Their Larvicidal Activities [PDF]

open access: yes, 2006
Chemical and biological studies were carried out on two plants, Piper nigrum L. (Piperaceae) and Mesua ferrea L. (Guttiferae). The chemical investigations covered alkaloids, triterpenoids, carboxylic acids and anthraquinones.
Lim, Sooi Kim
core  

The use of medicinal plants by the Yanomami indians of Brazil [PDF]

open access: yes, 1996
The results of the first detailed study of the use of medicinal plants by a group of Yanomami Indians are presented. Contrary to previous assumptions, they are shown to possess a substantial pharmacopoeia, including at least 113 species of plants and ...
Albert, Bruce, Milliken, W.
core   +1 more source

Beyond Deception: What Else Do Flower Wasps (Hymenoptera: Thynnidae: Thynninae) Do in Flowers Worldwide?

open access: yesJournal of Applied Entomology, Volume 149, Issue 9, Page 1351-1363, November 2025.
ABSTRACT Wasps, although less recognised as good pollinators, also feed on nectar and pollinate flowers. Specialised pollination systems, such as orchids that mimic the pheromones of female wasps to attract males, are complex and specific. This interaction occurs with some Thyninnae wasps that also visit flowers to obtain nectar and perform other ...
Leidy Kelly Guimarães Cunha   +4 more
wiley   +1 more source

Desenvolvimento de árvores nativas em ensaios de espécies 2. Jacareúba (Calophyllum angulare A.C. Smith). [PDF]

open access: yesActa Amazonica, 1981
Resumo Os autores apresentam o desenvolvimento da Jacareúba (Calophyllum angulare A. C. Smith) Guttiferae, em cinco parcelas experimentais diferentes, sendo duas plantadas em plena abertura, duas sob sombra de floresta primária submetida a cortes do sub ...
Jurandyr da Cruz Alencar   +2 more
doaj   +1 more source

Natural Products from Mexican Medicinal Plants as Promising Trypanocidal Drugs

open access: yesChemistrySelect, Volume 10, Issue 37, October 6, 2025.
Chagas disease (American Trypanosomiasis) is caused by the protozoan Trypanosoma cruzi. Worldwide it is one of the seventeen neglected tropical diseases. There is a need of new drugs. This review assesses the literature (2012‐2024) of secondary metabolites isolated from Mexican plants active against this parasite.
Karla Daniela Rodríguez‐Hernández   +2 more
wiley   +1 more source

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