Oats
Overview
Oats provide beta-glucan fibre (prebiotic), B vitamins, and minerals that support gut health, serotonin synthesis, and stable glucose release. Key contributions include magnesium, iron, selenium, and folate. Beta-glucans support gut microbiome health.
Key Nutritional Highlights
- Concentrated source of beta-glucan, the soluble oat fibre most linked to glycaemic and lipid benefits.
- Strong micronutrient profile for a grain, including magnesium, iron, selenium, and folate.
- Naturally gluten-free as a grain, though cross-contamination risk depends on sourcing/processing.
- Oat protein remains lysine-limited, so amino-acid balance improves when paired with legumes.
Food Context
Synergies
- Pair with tryptophan-rich proteins for serotonin synthesis; pair tryptophan-rich proteins with moderate carbs to increase Trp:LNAA ratio
- Best consumed in evening for calming effect; timing midday or evening for calming effect
- Part of grain-legume complementarity strategy; grains (typically lysine-limited) and legumes (methionine/cysteine-limited) complete each other's profiles when paired
- Tryptophan + complex carbohydrates aid serotonin conversion to melatonin; examples include pumpkin seeds + oats
Preparation
- Soak overnight to reduce phytates and improve mineral bioavailability
Essential Amino Acid Profile
Oats provide meaningful plant protein but are not a complete protein.
Limiting amino acids:
- Lysine (typical of grains)
Protein pairing strategy:
Oats are relatively higher in methionine than many legumes but lower in lysine. Combining oats with lentils, beans, or other legumes helps create a more balanced essential amino acid profile.
Recipes
Nutrient Tables (per 100 g)
Core nutrients
| Nutrient | Amount per 100 g | % RDA per 100 g |
|---|---|---|
| Energy | 389 kcal | — |
| Protein | 16.9 g | — |
| Total fat | 6.9 g | — |
| Saturated fat | 1.2 g | — |
| Carbohydrates | 66.3 g | — |
| Fibre | 10.6 g | — |
Key vitamins and minerals
| Nutrient | Amount per 100 g | % RDA per 100 g |
|---|---|---|
| Iron | 4.7 mg | 26.2% |
| Zinc | 4 mg | 36.1% |
| Magnesium | 177 mg | 42.1% |
| Copper | 0.6 mg | 69.6% |
| Folate | 56 µg | 14% |
Bioactive compounds
Explicitly identified compounds, including individual fatty acids, with a defensible quantity or an explicit qualitative status. Asterisks (*) identify supplementary sources below. Unquantified or trace constituents are not automatically admitted to the Substances list.
| Compound / class | Amount per 100 g | Notes |
|---|---|---|
| Beta-glucan | 7.5 g * | Soluble cereal β-glucan; primary oat fibre fraction linked to lipid and glycaemic endpoints. |
- * Beta-glucan: USDA FoodData Central Foundation food FDC 2346396 (footnote: beta-glucan values corrected in 10/2024 update). Varies by oat type (groats vs rolled vs instant) and processing.
Functional metrics
| Metric | Score | Notes |
|---|---|---|
| Total phenolics (grain matrix) | Varies by cultivar and processing | Avenanthramides and other oat phenolics are not standard USDA panel rows; qualitative only here. |
Note: Functional-metric values depend strongly on assay method, processing, and product formulation. Use these as contextual metrics, not strict like-for-like nutrient equivalents.
Substances
Substances admitted through a supported nutrition-table row. Not every table row appears here. Cards are not BRS mappings.
6 substances in this food
Copper
Cofactor in redox enzymes; dopamine β-hydroxylase; iron metabolism interplay
Iron
Oxygen transport; dopamine synthesis (tyrosine hydroxylase cofactor)
Magnesium
Enzymatic cofactor (>300 reactions); neurotransmitters; mitochondria; redox balance
Vitamin B9 (Folate; 5-MTHF)
One-carbon metabolism; methylation; homocysteine recycling
Zinc
Cofactor in neurotransmission and antioxidant enzymes; dopamine modulation
Beta-Glucans
Polysaccharides with immune-modulating properties found in mushrooms and other foods
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] \textlessp\textgreaterWhile animal products are rich in protein, the adequacy of dietary protein intake from vegetarian/vegan diets has long been controversial. Mariotti & Gardner 2019. Plant-protein adequacy, limiting amino acids, and practical complementarity
[3] Brief Summary N-acyl-phosphatidylethanolamine (NAPEs) and their active metabolites, N-acyl-ethanolamides (NAEs) are lipid satiety factors that are normally biosynthesized in the intestinal tract in response to food intake. Sean Davies 2018. Oat bran lipid/phospholipid response study