Algal Oil
Overview
Algal oil provides docosahexaenoic acid (DHA) directly from microalgae, offering a vegan source of long-chain omega-3 fatty acids without relying on fish. Typical algal oil supplements supply on the order of 100–300 mg DHA per serving, with lower amounts of EPA in the same broad range depending on formulation, usually in triglyceride form [1]. This makes algal oil a practical option for raising DHA intake in dietary patterns that minimise or exclude seafood.
Within the BRAIN Diet framework, algal oil is treated as a targeted DHA delivery vehicle rather than a culinary fat: it helps increase DHA status in line with broader omega-3 guidance, but it does not replace whole-food sources of fibre, protein, or other micronutrients. Evidence from small trials suggests that DHA from algal-oil capsules is similarly bioavailable to DHA from cooked salmon, supporting its use as a substitute when fish is not eaten [1,2].
Food Context
Synergies
- Combine DHA-rich algal oil with adequate dietary choline intake so that both precursors for phosphatidylcholine synthesis are present; this supports incorporation of DHA into membrane phospholipids and lipoprotein transport.
Preparation
- Use algal oil in capsule or measured liquid supplement forms as directed by the manufacturer; these products are not intended for high-heat culinary use.
- Store algal oil away from heat and light and respect shelf-life guidance to limit oxidation of DHA and preserve product quality.
Recipes
Nutrient Tables (per 100 g)
Core nutrients
| Nutrient | Amount per 100 g | % RDA per 100 g |
|---|---|---|
| Saturated fat | 6.6 g | — |
Bioactive compounds
Values below are often from specialist compositional databases or literature, not the standard USDA panel. Asterisks (*) refer to source notes at the bottom of this section.
| Compound / class | Amount per 100 g | Notes |
|---|---|---|
| DHA | 30000 mg | — |
| EPA | 10000 mg * | Formulation-dependent; many algal oils are DHA-dominant with modest EPA. |
Note: Bioactive-compound values vary substantially by cultivar, species, cocoa or oil percentage, processing, and brand formulation. Show quantitative values only where a defensible source exists; otherwise prefer qualitative presence statements or ranges in source notes.
- * EPA: Representative EPA content for high-DHA algal oil, assuming EPA present at a lower level than DHA per 100 g of oil based on NIH ODS omega-3 fact sheet (algal oil providing DHA with some EPA) and typical supplement label ratios. Adjust to match specific product data where available.
Substances
Substances in this food: editorial (Overview / literature) plus analytical (nutrition table).
2 substances in this food
DHA (Docosahexaenoic Acid)
Accounts for ~10–15% of total brain fatty acids, 20–30% of neuronal phospholipids (PE, PS), and >90% of brain omega-3 PUFA; critical for membrane fluidity, synaptic vesicle fusion, neurodevelopment
EPA (Eicosapentaenoic Acid)
Potent anti-inflammatory; precursor to E-series resolvins; modulates dopamine and serotonin signalling
References
These references link to the BRAIN Diet bibliography page, where the full citation and DOI/external source link are provided.