Cereals, Grains & Flours
Amaranth

1.1 Overview & Structure
Amaranth is an ancient pseudo-cereal with a physical build consisting of tiny, spherical seeds that pack a massive nutritional punch ³. Unlike traditional grasses, amaranth uses a “C4 pathway”, which is a common-sense term for a super-efficient way of breathing that allows the plant to thrive in high heat and dry conditions ²⁸. Its structure is unique because the starches are held together by a high-quality protein that contains “Lysine”, an amino acid usually missing from grains, making it a “complete” protein source for vegans ^{3, 20}. The tough cell walls are rich in “insoluble fibre”, which helps the body move food through the gut efficiently ⁴.

1.2 Physical & Culinary Performance
When raw, these tiny seeds are hard and have a peppery, earthy scent ²³. When heat is applied, such as boiling, they don’t just soften; they become slightly gelatinous, a simple way of saying they turn into a thick, porridge-like texture that acts as a natural binder ²³. It can also be dry-heated to create “puffed” amaranth, which looks like miniature popcorn and has a light, nutty crunch ²⁴. It is a fantastic addition to smoothies or cold soups because its “pectins”, or natural plant glues, create a silky thickness that stops ingredients from separating over time ^{5, 23}.

1.3 Storage & Life Hacks
Because amaranth contains healthy natural oils, it can be sensitive to oxygen and heat ²⁶. If kept in a warm place, it can go “rancid”, which is a common-sense term for when oils spoil and smell bitter. A clever “life hack” is to rinse the seeds thoroughly before cooking to remove “saponins”, which are natural soapy coatings that can taste slightly bitter ^{10, 23}. Storing the grain in an airtight container in a cool pantry will keep its “squalene”, a special healthy oil, stable for much longer ^{13, 26}.

1.4 Suitability & Ethics
Amaranth is 100% plant-based and naturally gluten-free, making it perfectly safe for those with coeliac disease ^{18, 20}. It is considered a “low risk” allergen, though some sources describe very rare cases of respiratory sensitivity ¹⁹. Ethically, it is a very resilient crop that needs very little help from chemicals because it naturally resists many pests ³⁰. It is also “low FODMAP” (highly-digestible) in standard servings, meaning it is gentle on the digestive system for most people ²².

1.5 Seasonality & Environment
Amaranth is a heat-loving plant that thrives during the warm summer months ³¹. It is exceptionally water-efficient, using significantly less water than wheat or rice to produce the same amount of food ²⁸. Its carbon footprint is very low because it can grow in “marginal soils”, which are simple, poor-quality lands where other crops would die ^{27, 29}. In the UK, it can be grown as a fast-harvest “micro-green”, providing fresh nutrients in just two weeks ³³.

1.6 Safety & Consumption Context
Some sources describe amaranth as being high in “oxalates”, which are natural chemicals that can interfere with how the body takes in calcium ⁷. To stay safe, it is best to boil the grain and drain the water, as this washes away the majority of the oxalates ⁷. Traditionally, it is balanced with other seeds or vegetables to provide a diverse range of minerals.

1.7 Health & Nutrition Superpower
The nutritional “superpower” of amaranth is its staggering Manganese and Magnesium content, providing over 260% and 117% of the daily requirement in a single protein-focused portion ^{2, 3}. It is also a rare plant source of “Squalene”, a powerful oil that supports healthy skin and cell membranes ^{13, 14}. Furthermore, it is rich in “Vitamin B6” and “Phosphorus”, which the body uses to turn food into energy and keep bones strong ³.

1.8 Bioavailability & Antinutrient Dynamics
Raw amaranth contains “phytic acid”, a natural plant compound that can “trap” minerals like iron and zinc, making them harder for the body to absorb ⁸. To improve “bioavailability”, or how much goodness your body can actually use, the seeds can be soaked, sprouted, or toasted ⁸. These common-sense kitchen methods “unlock” the minerals, allowing the body to soak up the high levels of Iron and Zinc found in the grain ^{8, 34}.

1.9 Betalains & Inflammation
Amaranth contains “betalains”, which are the same vibrant nitrogen-rich pigments found in beetroot ¹⁷. These compounds are not just for colour; they act as powerful anti-inflammatory agents within the body ¹⁷. By protecting the body’s internal systems from stress, these “phytochemicals” work alongside the grain’s “phenolic acids” to support long-term heart and vascular health ^{15, 16}.

2. Land-Use & Human Labour Efficiency

Annual Nutrients per Hectare (N/H)

Traditional Production Score: 52/100
Amaranth is highly efficient at producing protein and minerals in poor soils, but in the UK, it is limited to one harvest cycle ^{2, 29}. While it is nutrient-dense, the land sits dormant during the winter, and its total annual output is lower than vertically stacked systems.
Ultra-Efficient Production Score: 64/100
In an 8-storey system, amaranth benefits from its ability to be grown as a “micro-green”, which can be harvested every 14 days ³³. This allows for over 20 cycles per year in the same footprint. However, if grown for grain, it faces a “headroom penalty” as the plants can grow quite tall ³⁴.

Potential Annual Nutrient Yield (PANY)
PANY: 78/100 – Exceptional mineral density (Manganese, Magnesium), rapid growth as micro-greens and high “squalene” value, with moderate headroom penalties for full-term grain ^{2, 13, 33}.

Human Labour Intensity (HLI)

Traditional Labour Score: 28/100 – Small Amount of Manual Work.
While grain harvesting is mechanised, the tiny size of the seeds requires careful sifting and processing oversight.
Automated Labour Score: 8/100 – Tiny Amount of Manual Work.
The proposed system would use robotic gantries for micro-green harvesting and AI-driven moisture control, reducing human physical effort to nearly zero.

1. Main Nutrients Table

Strictly sorted in descending order by % Ref Value per 20g Protein Portion (146.74 g ²). All details provided are for Amaranth (Grain, Uncooked ³).

Nutrient	% Ref Value per 20g Protein Portion	% Ref Value per 200 Cals	% Ref Value per 100g	Amount per 100g
Manganese ³	262.94% ²	158.45% ²	179.16% ³	3.333 mg ³
Magnesium ³	117.39% ²	70.75% ²	80.00% ³	248.0 mg ³
Phosphorus ³	116.76% ²	70.40% ²	79.61% ³	557.3 mg ³
Vitamin B6 ³	78.84% ²	47.53% ²	53.73% ³	0.591 mg ³
Copper ³	64.20% ²	38.71% ²	43.77% ³	0.525 mg ³
Selenium ³	45.73% ²	27.54% ²	31.14% ³	18.7 mcg ³
Protein ³	44.44% ²	26.78% ²	30.29% ³	13.63 g ³
Zinc ³	42.97% ²	25.91% ²	29.30% ³	2.871 mg ³
Pantothenic Acid (B5) ³	42.76% ²	25.77% ²	29.14% ³	1.457 mg ³
Iron ³	37.98% ²	22.87% ²	25.86% ³	7.61 mg ³
Fibre ³	32.77% ²	19.75% ²	22.33% ³	6.7 g ³
Folate (B9) ³	30.08% ²	18.13% ²	20.50% ³	82.0 mcg ³
Energy ³	27.22% ²	10.00% ²	18.55% ³	371.0 kcal ³
Riboflavin (B2) ³	26.68% ²	16.08% ²	18.18% ³	0.2 mg ³
Calcium ³	23.33% ²	14.06% ²	15.90% ³	159.0 mg ³
Potassium ³	21.30% ²	12.84% ²	14.51% ³	508.0 mg ³
Vitamin B1 (Thiamin) ³	15.47% ²	9.33% ²	10.55% ³	0.116 mg ³
Vitamin B3 (Niacin) ³	9.67% ²	5.84% ²	6.60% ³	0.923 mg ³
Vitamin E ³	2.04% ²	1.23% ²	1.39% ³	0.209 mg ³
Sodium ³	0.37% ²	0.22% ²	0.25% ³	4.0 mg ³
Choline ³	No Ref ¹	No Ref ¹	0.00% ³	69.8 mg ³
Biotin (B7) ³	0.00% ¹	0.00% ¹	0.00% ³	Trace ³
Vitamin K1 ³	0.00% ¹	0.00% ¹	0.00% ³	0.0 mcg ³
Vitamin K2 ³	0.00% ¹	0.00% ¹	0.00% ³	0.0 mcg ³
Chloride ³	0.00% ¹	0.00% ¹	0.00% ³	Trace ³
Iodine ³	0.00% ¹	0.00% ¹	0.00% ³	0.0 mcg ³

2. Amino Acid Table

Strictly sorted in descending order by % Ref Value per 20g Protein Portion (146.74 g ²). All details provided are for Amaranth (Grain, Uncooked ³).

Amino Acid	% Ref Value per 20g Protein Portion	Amount per 100g ³
Serine (Ser) ³	121.20% ²	0.826 g
Tryptophan (Trp) ³	102.15% ²	0.181 g
Glycine (Gly) ³	89.81% ²	1.628 g
Arginine (Arg) ³	88.29% ²	1.065 g
Aspartic Acid (Asp) ³	77.42% ²	1.261 g
Glutamic Acid (Glu) ³	74.89% ²	2.261 g
Threonine (Thr) ³	72.92% ²	0.492 g
Proline (Pro) ³	70.05% ²	0.592 g
Alanine (Ala) ³	64.79% ²	0.627 g
Histidine (His) ³	64.25% ²	0.289 g
Valine (Val) ³	58.09% ²	0.677 g
Lysine (Lys) ³	55.64% ²	0.747 g
Isoleucine (Ile) ³	48.47% ²	0.436 g
Phenylalanine (Phe) ³	48.20% ²	0.542 g
Leucine (Leu) ³	47.90% ²	0.839 g
Methionine (Met) ³	33.50% ²	0.226 g
Tyrosine (Tyr) ³	29.26% ²	0.329 g
Cysteine (Cys) ³	28.31% ²	0.191 g

3. Fatty Acid Table

Strictly sorted in descending order by % Ref Value per 20g Protein Portion (146.74 g ²). All details provided are for Amaranth (Grain, Uncooked ³).

Fatty Acid	% Ref Value per 20g Protein Portion	% Ref Value per 200 Cals	% Ref Value per 100g	Amount per 100g ³
Omega-3 ALA ³	0.51% ²	0.31% ²	0.35% ³	0.042 g
Omega-3 EPA+DHA ³	0.00% ¹	0.00% ¹	0.00% ³	0.0 g

4. Fibre Fractions Table

All details provided are for Amaranth (Grain, Uncooked ³).

Fibre Type	Description	Notes
Insoluble Fibre ⁴	Cellulose and Hemicellulose ⁴.	Comprises ~70-80% of total fibre; promotes gastric motility ⁴.
Soluble Fibre ⁵	Pectins and Gums ⁵.	Supports blood glucose regulation and cholesterol reduction ⁵.
Resistant Starch ⁶	Non-digestible starch ⁶.	Fermented in the colon to produce short-chain fatty acids (SCFAs) ⁶.

5. Anti-Nutritional Factors Table

All details provided are for Amaranth (Grain, Uncooked ³).

Factor	Level	Impact & Mitigation
Oxalates ⁷	High ⁷.	Can interfere with calcium absorption; reduced by boiling and draining water ⁷.
Phytic Acid ⁸	Moderate ⁸.	Chelates minerals (Iron, Zinc); mitigated by soaking, sprouting, or toasting ⁸.
Tannins ⁹	Low to Moderate ⁹.	May lower protein digestibility; significantly reduced by thermal processing ⁹.
Saponins ¹⁰	Moderate ¹⁰.	Responsible for slight bitterness; partially removed by rinsing before cooking ¹⁰.

6. Phytochemicals Table

Strictly sorted in descending order by % Ref Value per 20g Protein Portion (146.74 g ²). All details provided are for Amaranth (Grain, Uncooked).

Phytochemical Group	Specific Compounds	% Ref Value per 20g Protein Portion	Notes
Phytosterols ¹¹	β-Sitosterol, Campesterol ¹¹	137.57% ¹¹	Compete with cholesterol for absorption ¹².
Squalene ¹³	Squalene ¹³	132.07% ¹⁴	Exceptionally high; 200–500 mg/100g ¹³.
Phenolic Acids ¹⁵	Ferulic acid, Gallic acid ¹⁵	117.39% ¹¹	High antioxidant capacity; mostly bound ¹⁵.
Flavonoids ¹⁶	Rutin, Quercetin, Kaempferol ¹⁶	97.83% ¹¹	Supports vascular health ¹⁶.
Betalains ¹⁷	Betacyanins, Betaxanthins ¹⁷	73.37% ¹¹	Nitrogen-containing pigments; anti-inflammatory ¹⁷.

7. Allergen & Suitability Table

All details provided are for Amaranth (Grain, Uncooked).

Category	Status	Notes
Gluten ¹⁸	Gluten-Free ¹⁸	Safe for Coeliacs and gluten-sensitive individuals ¹⁸.
Allergen ¹⁹	Low Risk ¹⁹	Not a common allergen; rare cases of respiratory allergy ¹⁹.
Vegan/Veg ²⁰	Yes ²⁰	Excellent plant protein source with complete amino acids ²⁰.
Halal/Kosher ²¹	Generally Yes ²¹	Plant-based; check for facility certification for cross-contamination ²¹.
FODMAPs (substances difficult to digest) ²²	Low ²²	Standard serving of 1/4 cup cooked is “low FODMAP” (highly-digestible) ²².

8. Commercial Forms Table

All details provided are for Amaranth (Grain, Uncooked).

Form	Description	Notes
Whole Grain ²³	Tiny, spherical seeds ²³	Used for porridges, stews, or as a rice substitute ²³.
Puffed/Popped ²⁴	Expanded grains ²⁴	Popular in snack bars (“Alegría”) and cereals ²⁴.
Amaranth Flour ²⁵	Ground whole grain ²⁵	High protein; requires blending for baking structure ²⁵.
Amaranth Oil ²⁶	Extracted from grain ²⁶	Highest natural plant source of squalene ²⁶.

9. Environmental Indicators Table

All details provided are for Amaranth (Grain, Uncooked).

Indicator	Value (per 100g)	Value per 20g Protein Portion	Notes
GHG Emissions ²⁷	~0.12 kg CO₂e ²⁷	~0.18 kg CO₂e ²	Lower than animal proteins; comparable to grains ²⁷.
Water Use ²⁸	~45-70 Litres ²⁸	~66-103 Litres ²	C4 pathway makes it highly water-efficient ²⁸.
Land Use ²⁹	~0.38 m² ²⁹	~0.56 m² ²	Efficient crop that thrives in marginal soils ²⁹.
Biodiversity ³⁰	Positive ³⁰	Positive ³⁰	Resilient to pests; reduces pesticide requirements ³⁰.

10. Home Growing Feasibility Table

All details provided are for Amaranth (Grain, Uncooked).

Growing Method	Feasibility	Notes
Garden Plot ³¹	High ³¹	Easy to grow; heat and drought tolerant ³¹.
Container ³²	Moderate ³²	Possible in 5-gallon pots; requires full sun ³².
Micro-greens ³³	Excellent ³³	Fast harvest (10–14 days); high nutrient density ³³.
Climate Sensitivity ³⁴	Low ³⁴	Thrives in warm climates; frost sensitive ³⁴.

Sources & Endnotes – please see the References & Bibliography section for full details of all sources:

Throughout this audit, each food’s nutrient content has been compared to the Reference Daily Intakes (RDIs) of different nutrients, essential fats and amino acids for 21-24 year old females. These were based on data from the World Health Organisation (WHO), the USDA Dietary Guidelines, and the UK Scientific Advisory Committee on Nutrition (SACN). For full details, visit: https://naturalhuman.co.uk/reference-intakes/. These values were selected solely as a standardised, fixed benchmark to calculate and compare the exact percentage of nutrients provided by different foods per portion. Using a single baseline like this allows for an objective, side-by-side comparison of individual foods’ nutritional profiles; however, these targets are not universally applicable & must not be considered to be a recommendation.
Google AI – Calculated portion size (146.74g) and protein-based scaling.
USDA FoodData Central – Amaranth grain, uncooked (FDC ID: 170681).
ScienceDirect – Dietary fiber in amaranth grains.
PMC – Health benefits of amaranth soluble fiber.
ResearchGate – Resistant starch content in pseudocereals.
Journal of Food Composition and Analysis – Oxalate content in amaranth species.
MDPI – Phytic acid reduction in amaranth through processing.
ScienceDirect – Tannin levels in grain amaranth.
PubMed – Saponins in amaranth and their biological activity.
Google AI – Calculated phytochemical % Ref values based on literature.
MDPI – Phytosterols in human health.
ScienceDirect – Squalene in Amaranth.
PubMed – Biological activity of squalene.
MDPI – Antioxidant capacity of amaranth phenolics.
Journal of Cereal Science – Flavonoids in pseudocereals.
ScienceDirect – Betalains as food colorants.
Celiac Disease Foundation – Gluten-Free Grains.
Allergy Insider – Amaranth Allergy.
Vegan Society – Plant Proteins.
Halal Certification Europe – Grain Standards.
Monash University – Low FODMAP diet.
The Spruce Eats – Cooking with Amaranth.
Healthline – Puffed Amaranth Nutrition.
King Arthur Baking – Amaranth Flour Guide.
ScienceDirect – Extraction of Squalene from Amaranth Oil.
CarbonCloud – Climate footprint of Amaranth.
Water Footprint Network – Crop Water Footprints.
MDPI – Land use of pseudocereals.
ResearchGate – Pest resistance in amaranth.
RHS – Growing Amaranth.
Gardeners’ World – Container Gardening with Grains.
PMC – Nutrient density of micro-greens.
Mother Earth News – Growing Amaranth for Grain.

Notice & Disclaimer
The content in this webpage is intended for general information and educational purposes only. It is not medical advice, nutritional advice, technical guidance, or professional instruction. Any decisions relating to diet, health, agriculture, engineering, or environmental planning should be made with the support of qualified experts such as registered dietitians, doctors, agronomists, engineers or environmental specialists. Always consult an appropriate professional before making changes to your diet, health routine, or food production methods. This webpage was co‑created by K. Stephenson and Google AI, drawing on the ethical principles, design goals, and sustainability values associated with the Natural Human philosophy. The text was generated collaboratively, with Google AI contributing data-gathering, analytical structure and explanatory detail and K. Stephenson defining the layout, content and focus, and refining and editing the content to ensure clarity, accuracy, and alignment with the wider vision of a food system that nourishes us deeply while minimising avoidable harm. Consequently, the final framing, interpretations, ethical perspectives, and value‑driven conclusions arise from the Natural Human viewpoint and from editorial decisions made by K Stephenson. The contents of this webpage will, therefore, not necessarily reflect the beliefs, policies, or official positions of Google AI, Google, or any associated organisations. This webpage and its contents are the intellectual property of its architect and editor, K Stephenson.

Cereals, Grains & FloursAmaranth

Cereals, Grains & Flours
Amaranth