Quinoa

Overview

Quinoa is a nutrient-dense pseudograin that provides complex carbohydrates, fibre, and a substantial plant-protein contribution, alongside magnesium, iron, zinc, folate, and choline [2]. It is naturally gluten-free and can be a useful grain alternative for people who avoid wheat-based staples.

Quinoa seeds naturally contain bitter saponins in the outer coating, so rinsing before cooking improves taste and palatability; many modern commercial products are pre-washed, but a brief rinse is still practical in home cooking [3]. Within the BRAIN Diet framework, quinoa works well as a rotating whole-grain/pseudograin option that supports mineral intake, fibre intake, and overall diet diversity [2].

Key Nutritional Highlights

• Highest folate among BRAIN Diet grain and pseudograin pages (per 100 g).
• Provides complex carbohydrates for meal energy and dietary pattern flexibility.
• Typically contributes more fibre and micronutrients than refined grain products.
• Plant-protein quality is useful but context-dependent; amino-acid complementarity can improve coverage.
• Naturally low in saturated fat.
• Processing and preparation methods (refining, fermentation, soaking/rinsing, cooking) influence tolerance and nutrient availability.

Food Context

Synergies

• Pair quinoa with legumes (e.g. lentils, chickpeas, beans) to improve overall essential amino-acid balance at meal/day level [1,2].

Preparation

• Rinse before cooking to reduce residual saponin bitterness (even when labeled pre-washed).
• Use gentle boiling/steaming and avoid overcooking to preserve texture and improve practical meal adherence.

Essential Amino Acid Profile

Quinoa provides a strong plant-protein profile and is often described as relatively balanced for a pseudograin, but amino-acid complementarity with legumes still improves practical coverage [1,2].

Notable amino acids:

• Lysine

Protein pairing strategy:

Combine quinoa with legumes (e.g. lentils, chickpeas, beans) to support a more robust essential amino-acid pattern across meals [1,2].

Recipes

4 recipes containing this food

Black Bean & Sweet Potato Vegetable Chilli

A fibre-rich bean and vegetable chilli with warming spices and slow carbohydrates for steady energy and satiety.

Mitochondrial Power Bowl

A nitrate-rich, polyphenol-dense bowl combining leafy greens, beets, berries, nuts, and early harvest olive oil

Rocket Lentil Avocado Midday Salad (Gut-Supporting)

Polyphenol-rich midday salad with quinoa or lentils, vegetables, avocado, and early harvest olive oil

Savoury Greens & Egg Breakfast Skillet

A warm savoury breakfast skillet with eggs, greens, and slow carbohydrates for steady morning energy.

Nutrient Tables (per 100 g)

Core nutrients

Nutrient	Amount per 100 g	% RDA per 100 g
Energy	368 kcal	—
Protein	14.1 g	—
Total fat	6.1 g	—
Saturated fat	0.7 g	—
Carbohydrates	64.2 g	—
Fibre	7 g	—

Key micronutrients

Nutrient	Amount per 100 g	% RDA per 100 g
Iron	4.6 mg	25.4%
Zinc	3.1 mg	28.2%
Magnesium	197 mg	46.9%
Selenium	8.5 µg	15.5%
Calcium	47 mg	4.7%
Potassium	563 mg	16.6%
Choline	70.2 mg	12.8%
Folate	184 µg	46%
Vitamin B12	0 µg	0%
Vitamin B6	0.5 mg	28.6%

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
ALA	588 mg	—
DHA	47 mg	—

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.

Reference intakes: US Dietary Reference Intakes for adults (19–50 years; using the higher of male/female values where they differ).

Data provenance (core / micronutrient panel): USDA FoodData Central, Quinoa, uncooked, FDC ID 168874, API, per 100 g edible portion, last checked 2026-03-14

Substances

Substances in this food: editorial (Overview / literature) plus analytical (nutrition table).

24 substances in this food

Choline

Acetylcholine precursor; methyl donor; phospholipid synthesis for membranes

Histidine

Essential AA; precursor to histamine; roles in enzyme active sites

Fe²⁺

Iron

Oxygen transport; dopamine synthesis (tyrosine hydroxylase cofactor)

Isoleucine

Essential BCAA; energy metabolism; complements leucine/valine

Leucine

Essential BCAA; mTOR signaling; protein synthesis; cognitive load support

Lysine

Essential AA; limiting in many cereals; complements legumes

Mg²⁺

Magnesium

Enzymatic cofactor (>300 reactions); neurotransmitters; mitochondria; redox balance

Mn²⁺

Manganese

Cofactor for MnSOD (SOD2); mitochondrial antioxidant defense

Methionine

Essential AA; precursor to SAMe via methylation cycle

Phenylalanine

Essential AA; precursor to tyrosine → catecholamines

PO₄³⁻

Phosphorus (Phosphate)

Structural phosphate in ATP, phosphocreatine, phospholipids, DNA/RNA, and signalling

Threonine

Essential AA; structural proteins; mucin production

Tryptophan

Serotonin/melatonin precursor; NAD+ pathway substrate; LAT1 transport dynamics

Valine

Essential BCAA; supports protein balance and neurotransmitter transport competition

Vitamin B1 (Thiamine)

Mitochondrial glucose metabolism; ATP synthesis; rapid turnover in CNS

Vitamin B2 (Riboflavin)

FMN/FAD coenzymes; redox balance; supports methylation via MTHFR

Vitamin B6 (Pyridoxine → PLP)

PLP cofactor for neurotransmitter synthesis; relies on brain PDXK activation

Vitamin B9 (Folate; 5-MTHF)

One-carbon metabolism; methylation; homocysteine recycling

Zn²⁺

Zinc

Cofactor in neurotransmission and antioxidant enzymes; dopamine modulation

Se^2-

Selenium

Antioxidant enzyme cofactor (GPx); supports redox balance

Ca²⁺

Calcium

Bone health; neurotransmission; interacts with vitamin D and K2

K⁺

Potassium

Electrolyte for nerve transmission, muscle function, and blood pressure regulation

ALA (Alpha-Linolenic Acid)

Essential omega-3 precursor; limited conversion to DHA/EPA

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

References

[1] Report recommending the Digestible Indispensable Amino Acid Score (DIAAS) as the preferred method for evaluating dietary protein quality, replacing PDCAAS, and detailing methodology and implications for human nutrition. FAO 2013. Protein quality evaluation framework (DIAAS)

[2] Within the BRAIN Diet framework, quinoa works well as a rotating whole-grain/pseudograin option that supports mineral intake, fibre intake, and overall diet diversity. Mariotti & Gardner 2019. Plant-protein adequacy, limiting amino acids, and practical complementarity