Lupin Beans

Overview

Lupin beans are protein-dense legumes that provide substantial arginine, lysine, folate, magnesium, and fibre. Their amino-acid profile is useful in plant-forward dietary patterns where arginine and total protein density are priorities, and where lysine-rich legumes help balance grain-heavy meal patterns.

Within the BRAIN Diet framework, lupin beans are a practical plant option for amino-acid coverage and mineral support, especially when rotated with soy foods, lentils, and seeds. As with many legumes, sulfur amino acids are relatively lower than lysine, so meal composition still matters for full essential-amino-acid balance.

Key Nutritional Highlights

• High protein and fibre density for a legume ingredient.
• Strong arginine contribution among realistic plant-food servings.
• Lysine-rich profile complements grain-heavy meals.
• Useful folate, magnesium, iron, and zinc support in plant-forward patterns.
• Raw-seed values are concentration-heavy; cooked or brined servings are lower per 100 g.

Food Context

Sourcing

• Use food-grade lupin products from reputable producers; bitter/alkaloid-rich traditional varieties require proper debittering before consumption.
• Choose minimally processed forms (cooked beans, plain lupin flour) when possible.

Synergies

• Pair with whole grains to improve methionine/cysteine balance across meals.
• Combine with vitamin-C-rich vegetables to support non-heme iron utilization.

Preparation

• Dry lupins require soaking and thorough cooking/debittering before use.
• Brined ready-to-eat lupin beans are convenient but often higher in sodium; rinse when needed.

Essential Amino Acid Profile

Lupin beans provide a strong plant protein source but are not sulfur-amino-acid complete in isolation.

Recipes

no recipes found

Nutrient Tables (per 100 g)

Core nutrients

Nutrient	Amount per 100 g	% RDA per 100 g
Energy	371 kcal	—
Protein	36.2 g	—
Total fat	9.7 g	—
Saturated fat	1.2 g	—
Carbohydrates	40.4 g	—
Fibre	18.9 g	—

Key micronutrients

Nutrient	Amount per 100 g	% RDA per 100 g
Iron	4.4 mg	24.2%
Zinc	4.8 mg	43.2%
Magnesium	198 mg	47.1%
Selenium	8.2 µg	14.9%
Calcium	176 mg	17.6%
Potassium	1013 mg	29.8%
Folate	355 µg	88.8%
Vitamin B12	0 µg	0%
Vitamin B6	0.4 mg	21%

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	1296 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, Lupins, mature seeds, raw, FDC ID 172423, API, per 100 g edible portion, last checked 2026-03-14

Substances

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

11 substances in this food

Arginine

Conditionally essential amino acid; precursor for creatine and nitric oxide synthesis

Fe²⁺

Iron

Oxygen transport; dopamine synthesis (tyrosine hydroxylase cofactor)

Lysine

Essential AA; limiting in many cereals; complements legumes

Mg²⁺

Magnesium

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

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

Vitamin B6 (Pyridoxine → PLP)

PLP cofactor for neurotransmitter synthesis; relies on brain PDXK activation

ALA (Alpha-Linolenic Acid)

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

References

• [1] Dietary protein quality evaluation in human nutrition (DIAAS report) FAO 2013
• [2] Dietary protein and amino acids in vegetarian diets: a review Mariotti et al. 2019