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This sheet was compiled from PubMed (NIH) abstracts using AI assistance. Every factual claim is cited to a real PubMed article (see the source list). It has not yet been human-reviewed — confirm with a healthcare provider before use.
Compiled from 30 PubMed articles · model: gemma4:31b
Summary
Araucaria araucana is an ancient, endangered conifer native to Chile and Argentina, utilized traditionally for nutritional and medicinal purposes [PMID:34654850, PMID:34882279].
Background
Also known as the Pehuén or Monkey puzzle tree, it is an evergreen coniferous species endemic to the Southern Andes of Chile and Argentina [PMID:34654850, PMID:34882279]. It is considered a vulnerable or endangered species due to low germination rates and overexploitation [PMID:34654850, PMID:34882279].
Traditional uses
The resin has been used since the pre-Columbian era by Mapuche communities to treat ulcers and wounds [PMID:35998784, PMID:15985351]. The seeds (piñones) are a traditional food source in southern Chile and Argentina [PMID:33601092, PMID:36596180], and are used to produce a traditional fermented beverage called Mudai [PMID:25041507].
Active compounds
The resin contains labdane diterpenes, including imbricatolic acid, 15-hydroxyimbricatolal, and 15-acetoxyimbricatolic acid [PMID:15985351, PMID:16163822]. The wood and bark contain furofuran lignans such as eudesmin, matairesinol, secoisolariciresinol, lariciresinol, and pinoresinol [PMID:35707900, PMID:16610214]. The seeds are rich in starch, essential amino acids, polyunsaturated fatty acids (Omega-3 and 6), dietary fiber, folate, minerals (Cu, Mn, Fe, Mg), and phenolics including catechin and epicatechin [PMID:36596180, PMID:33601092].
Mechanism of action
A crude extract of A. araucana demonstrated antispasmodic, bronchodilator, and vasodilator effects through the involvement of calcium channels, showing activity comparable to verapamil [PMID:35998784].
Clinical evidence
Evidence DGastric Ulcers
The resin and its main diterpene constituents (15-hydroxyimbricatolal and 15-acetoxyimbricatolic acid) showed dose-dependent gastroprotective activity in mice, comparable to lansoprazole [PMID:15985351].
Evidence DSpasms, Bronchoconstriction, and Vasoconstriction
Crude extract dose-dependently relaxed spontaneous and K+-induced contractions in rabbit jejunum, trachea, aorta, and atria [PMID:35998784].
Evidence DEmesis
Crude extract demonstrated antiemetic activity in a chick emesis model [PMID:35998784].
The lignan eudesmin exhibited neuroprotective abilities against synaptic failure induced by Aβ oligomers in a cellular model [PMID:36463456].
Evidence DCandida yeast infections
Eudesmin showed moderate activity against different strains of Candida [PMID:35707900].
Safety & adverse effects
In vitro testing and double fluorescent staining indicated that seed residues did not exhibit acute toxicity [PMID:32920353].
Evidence summary
The current evidence is primarily based on in vitro studies, animal models (mice, rabbits, chicks), and phytochemical analyses (Level D). No human clinical trials are provided in the source abstracts.
PubMed sources
1.PMID: 29662101 (2018) — Gymnosperms on the EDGE. · Scientific reports
2.PMID: 37299094 (2023) — Contribution of Arbuscular Mycorrhizal and Endophytic Fungi to Drought Tolerance in Araucaria araucana Seedlings. · Plants (Basel, Switzerland)
3.PMID: 36596180 (2023) — Chemical composition of bunya nuts (Araucaria bidwillii) compared to Araucaria angustifolia and Araucaria araucana species. · Food research international (Ottawa, Ont.)
4.PMID: 37596646 (2023) — New Resinogalea species from Araucaria araucana resin in Chile and reclassification of the genus in the Cryptocaliciomycetidae. · IMA fungus
5.PMID: 37447012 (2023) — Macrolichen Communities Depend on Phorophyte in Conguillío National Park, Chile.
Government sources
No direct government monograph is available for this herb. The content below is AI-generated and has not been verified against an authoritative government source. Use the search links to check official sources before relying on this information.
6.PMID: 34654850 (2021) — Assessing signals of selection and historical demography to develop conservation strategies in the Chilean emblematic Araucaria araucana. · Scientific reports
7.PMID: 35998784 (2022) — Potential biomedical applications of Araucaria araucana as an antispasmodic, bronchodilator, vasodilator, and antiemetic: Involvement of calcium channels. · Journal of ethnopharmacology
8.PMID: 41168985 (2026) — Developmental timing in the female reproductive cycle of Araucaria araucana: seasonality and evolutionary perspectives. · Annals of botany
9.PMID: 40725342 (2025) — Effect of Volatile Organic Compounds from Branches of Healthy and Unhealthy Araucaria araucana (Molina) K. Koch Trees on Host Selection by Bark Beetle Sinophloeus porteri (Coleoptera: Curculionidae). · Insects
10.PMID: 35707900 (2023) — Bromination of eudesmin isolated from araucaria araucana induces epimerization and give bromine derivatives with loss of anti-Candida activity. · Natural product research
12.PMID: 33601092 (2021) — Phenolic composition, antioxidant capacity and α-glucosidase inhibitory activity of raw and boiled Chilean Araucaria araucana kernels. · Food chemistry
13.PMID: 25041507 (2014) — Saccharomyces eubayanus and Saccharomyces uvarum associated with the fermentation of Araucaria araucana seeds in Patagonia. · FEMS yeast research
14.PMID: 22539504 (2012) — Microsatellite development for the relictual conifer Araucaria araucana (Araucariaceae) using next-generation sequencing. · American journal of botany
15.PMID: 32920353 (2020) — Pehuén (Araucaria araucana) seed residues are a valuable source of natural antioxidants with nutraceutical, chemoprotective and metal corrosion-inhibiting properties. · Bioorganic chemistry
16.PMID: 15985351 (2005) — Gastroprotective effect of the Mapuche crude drug Araucaria araucana resin and its main constituents. · Journal of ethnopharmacology
17.PMID: 36203635 (2022) — Vegetation responses to past volcanic disturbances at the Araucaria araucana forest-steppe ecotone in northern Patagonia. · Ecology and evolution
18.PMID: 36209429 (2023) — Bark and sapwood water storage and the atypical pattern of recharge and discharge of water reservoirs indicate low vulnerability to drought in Araucaria araucana. · Tree physiology
19.PMID: 35604362 (2022) — Anatomical and biochemical evolutionary ancient traits of Araucaria araucana (Molina) K. Koch and their effects on carbon assimilation. · Tree physiology
20.PMID: 34034160 (2021) — Physiological, biochemical, and anatomical responses of Araucaria araucana seedlings to controlled water restriction. · Plant physiology and biochemistry : PPB
21.PMID: 16663947 (1984) — Starch Degradation Metabolism towards Sucrose Synthesis in Germinating Araucaria araucana Seeds. · Plant physiology
22.PMID: 36463456 (2023) — Neuroprotective Properties of Eudesmin on a Cellular Model of Amyloid-β Peptide Toxicity. · Journal of Alzheimer's disease : JAD
23.PMID: 16163822 (2005) — Gastroprotective effect and cytotoxicity of natural and semisynthetic labdane diterpenes from Araucaria araucana resin. · Zeitschrift fur Naturforschung. C, Journal of biosciences
24.PMID: 34514686 (2021) — Retrospective analysis of wood anatomical traits and tree-ring isotopes suggests site-specific mechanisms triggering Araucaria araucana drought-induced dieback. · Global change biology
25.PMID: 41829788 (2026) — Beneficial Effects of a Root-Endophytic Bacterium with Quorum-Sensing Traits on Growth and Drought Tolerance in the Vulnerable Conifer Araucaria araucana. · Plants (Basel, Switzerland)
26.PMID: 34882279 (2021) — Sustainable and efficient protocols for in vitro germination and antioxidants production from seeds of the endangered species Araucaria araucana. · Journal, genetic engineering & biotechnology
27.PMID: 26790149 (2016) — On the Evolutionary History of Uleiella chilensis, a Smut Fungus Parasite of Araucaria araucana in South America: Uleiellales ord. nov. in Ustilaginomycetes. · PloS one
28.PMID: 16610214 (2006) — Antifungal and antibacterial activities of Araucaria araucana (Mol.) K. Koch heartwood lignans. · Zeitschrift fur Naturforschung. C, Journal of biosciences
29.PMID: 32616642 (2020) — Sequences of Endophytic Fungal and Bacterial Communities from Araucaria araucana [(Molina) K. Koch, 1869] in the Coastal and Andes Mountain Ranges, Chile. · Microbiology resource announcements
30.PMID: 20589337 (2010) — Arbuscular mycorrhizal infection in two morphological root types of Araucaria araucana (Molina) K. Koch. · Revista Argentina de microbiologia