Euterpe oleracea
Açaí palm
Generally recognised as safeOther names: Açaí palm
Acai — palm of Amazon wetlands; fruit in cuisine and trade.
Tall palm with pinnate leaves and clusters of dark fruits.
- Family
- Arecaceae
- Plant type
- Palm
What the safety levels mean (expand legend)
- Generally recognised as safe. Often a common herb with reasonable harvest and use; still read the specific warnings on the card.
- Information. Primarily informational — details in the text and warnings below matter most.
- Caution. Needs extra care (dose, duration, sensitive groups, interactions).
- Risky. Significant risks — verify sources, contraindications and professional guidance.
- Not for home experimentation. Not suitable to experiment with at home without knowledge and certainty.
- High risk for internal use. Particular risk with internal use (e.g. alkaloids); avoid prolonged or irresponsible dosing.
- Not specified. Level not filled in yet — rely on individual warnings and links below.
Photograph on Wikimedia Commons (Public domain).
Plant habit
Safety — read before use
For this herb it is important to check warnings, mix-ups and cautions. Start with the Safety section.
Quick overview
A practical summary; details are in the sections below.
- Safety grade
- Generally recognised as safe details
- Scientific sources on the card
- Yes — sources are listed with claims Science section
- When and what to harvest
- Fruit — July–December
- Processing methods
Culinary use, Syrup
All methods and recipes on the card- Topics and symptoms
Fatigue and low energy, Metabolism - gentle support
Topics section, Symptoms overview
Identification and mix-ups
Fleshy seeds in dense inflorescences.
Possible mix-ups and risks
Other arecaceae by habit and habitat.
Similar herbs
No related herbs are linked yet.
Topics and symptoms
More topics are in the symptoms and topics overview.
- Fatigue and low energyCulinary· Traditional / cultural framing
- Metabolism - gentle supportCulinary· Traditional / cultural framing
Geographic occurrence
Brazil
Common (expected wild occurrence in the region)
Harvest
- FruitJuly–December
vegetace
Region: BrazilNotes: The dark purple berries are harvested mainly in the dry season (July–December) in the Amazon estuary: the picker climbs the trunk with a leaf-strap (peconha), cuts the whole fruit cluster, and the fruit must be processed within 24 hours or it ferments.
Storage
- Refrigeration(Fruit)
Fresh pulp (polpa) lasts only a day; industrially it is pasteurised and frozen — frozen pulp keeps 12 months in the freezer, use within 24 hours of thawing.
- Safety:
- Unpasteurised street pulp in areas where Chagas disease is endemic is a risk (see Safety).
Processing methods on this herb card
Cooking, baking, seasoning as food — general category without therapeutic claims.
Full method description (from the catalogue)
Culinary use covers herbs as ingredients in dishes, drinks, or spice mixes. This overview does not evaluate medicinal effects — only reminds you about species intent, allergies, and heat treatment where needed (e.g. some fruits or plant parts).
Combining with alcohol, sugar, or long cooking changes outcomes; verify culinary sources.
Traditional context for this method: yes·Scientific context for this method: no
Decoction or infusion with sweetener and reduction; shelf life depends on sugar and storage.
Full method description (from the catalogue)
Syrups combine a herbal base with sugar or honey and often a short boil to concentrate and improve hygiene. Preservation depends strongly on water content, sugar level, and bottling practice.
Home syrups may fall under food rules; store in the fridge after opening per recipe.
Traditional context for this method: no·Scientific context for this method: no
Traditional / spiritual use
Kept separate from science — entries are cultural or symbolic, not medical advice.
The tears of Iaçá
Symbolism
Historical mentionFolk useMythologyA legend from Pará tells of chief Itaki, who in a famine ordered every newborn sacrificed until the lot fell on the daughter of his own daughter Iaçá. The grieving mother died beneath a palm heavy with dark fruit that fed the whole tribe; the chief revoked his order and named the palm with her name reversed — açaí. For the ribeirinhos of the Amazon estuary açaí with manioc flour is still a staple, not a dessert. A record of legend, not effect.
- Form:
- legenda o původu, denní pokrm říčních komunit
- Claim strength:
- Historical mention
- Source note:
- Amazonian folk legend of Iaçá (Pará); ethnography of ribeirinho communities.
Scientific notes
Each claim lists a study type and a source (URL or DOI) where available. Dose notes from the literature are informational only.
How to read evidence strength and study type labels
Labels summarise how the catalogue entry is tagged — they are not a medical verdict on efficacy. For every row, read the summary, limitations and source link.
Evidence strength
- Evidence level not specified
- The author did not grade the record; judge from the summary, limitations and source link.
- Narrative / orientational literature
- Descriptive or expert literature without controlled group comparison — context rather than proof of effect.
- Weak evidence
- Study or conclusion with major methodological limits; treat only as a pointer for further reading.
- Preliminary findings
- First or smaller studies — interesting direction, not the final word on efficacy or safety.
- Moderate strength of evidence
- Moderate strength by study design; sample and context limits still apply.
- Stronger evidence
- Stronger design or consistency of results within the study's stated limits.
- Review article
- A review summarises multiple sources; quality depends on review method and field.
Study type
- Narrative / expert text
- Expert text or overview without a classical study design.
- In vitro study
- Cell culture or test-tube experiment — does not show an effect in the body.
- Animal study
- Animal model — transfer to humans is not automatic.
- Observational study
- Observing groups without random treatment assignment; confounding is possible.
- Clinical trial
- Human clinical trial; sample size and control group matter.
- Randomised controlled trial
- Randomised controlled trials are among the stronger designs when well conducted.
- Review study
- A review aggregates multiple papers — quality depends on selection rules.
- Systematic review
- Systematic review with explicit search and selection methodology.
- Meta-analysis
- Statistical pooling of studies; outcome depends on input data and heterogeneity.
- Regulatory assessment / monograph (EMA, WHO…)
- Regulatory body summary for a herbal product — different context from a single RCT; often about products, not home tea.
- Expert monograph (herbal preparations)
- Structured literature summary for a plant or drug — quality depends on author and edition year.
The review summarises the composition of açaí fruit (anthocyanins, flavonoids, fatty acids, fibre) and laboratory and animal studies of antioxidant and anti-inflammatory action; it notes that human clinical studies are rare and small.
Narrative / orientational literatureReview studyYear: 2015Limitations: Mostly in vitro data; the 'superfood' image of açaí is not supported by clinical evidence in the review.
Yamaguchi KKL, Pereira LFR, Lamarão CV, Lima ES, da Veiga-Junior VF — Food Chemistry
Images
The main photo is in the card header. More images will appear here when available.
Safety
What the warning types mean
The type on each warning helps group themes — it does not replace the separate severity badge.
- Internal use
- Risks from swallowing, extracts, duration of use or concentration for internal use.
- Interactions / medicines
- Possible effect on medicines or concurrent treatment — check sources and a professional.
- Raw plant parts
- Raw, unripe or poorly prepared plant parts can be dangerous.
- Toxins and regulation
- Toxic constituents or regulated compounds (e.g. in distillates).
- Contact with the plant
- Skin or mucosa irritation from contact with fresh plant or sap.
- Allergy
- Allergic reactions, often linked to family sensitisation.
- Harvesting and contamination
- Contamination, species mix-ups or harvesting from unsuitable places.
- Unpasteurised pulp and Chagas diseaseModerate severityInternal use
In Brazil fresh, unpasteurised açaí pulp has repeatedly caused outbreaks of Chagas disease: triatomine bugs carrying Trypanosoma cruzi get crushed into the fruit (Nóbrega et al. 2009). Buy only pasteurised or frozen industrial pulp; in endemic areas do not drink street açaí.