Potatoes

Overview

Potatoes provide complex carbohydrates, potassium, vitamin B6, and vitamin C. Their functional profile changes meaningfully by preparation and variety: cooked-then-cooled potatoes increase resistant starch through retrogradation, while purple potato varieties contribute anthocyanins (including C3G-related compounds) that are relevant to polyphenol-focused dietary patterns.

In practical terms, potatoes can serve both glycaemic stability and polyphenol diversity goals when used intentionally: cooling after cooking supports resistant starch formation and lower post-prandial glycaemic response, and including purple varieties broadens anthocyanin exposure.

Food Context

Preparation

• Cook, cool, and optionally reheat potatoes to increase resistant starch (retrogradation) while retaining practical meal use.
• Cooled starch structures are associated with a lower glycaemic response versus freshly cooked hot potato servings.
• Resistant starch supports gut fermentation patterns linked to butyrate production and broader microbiome resilience.

Variety-Specific Properties

• Purple potato varieties provide anthocyanins (including C3G-related compounds), adding a polyphenol dimension beyond standard white/yellow potatoes.
• Anthocyanin-rich potato inclusion can be used as part of a broader strategy for color-diverse polyphenol intake.

Recipes

1 recipe containing this food

Saffron Roast Potatoes

Crisp roast potatoes finished with saffron-infused olive oil, designed to maximise colour, flavour and texture while remaining adaptable to many main dishes.

Nutrient Tables (per 100 g)

Core nutrients

Nutrient	Amount per 100 g	% RDA per 100 g
Energy	74 kcal	—
Protein	2 g	—
Total fat	0 g	—
Saturated fat	0 g	—
Carbohydrates	17.6 g	—
Fibre	1.4 g	—

Key micronutrients

Nutrient	Amount per 100 g	% RDA per 100 g
Iron	0.7 mg	4.1%
Zinc	0.2 mg	1.8%
Magnesium	16 mg	3.8%
Calcium	14 mg	1.4%
Potassium	419 mg	12.3%
Folate	16 µg	4%
Vitamin B6	0.1 mg	7.9%

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, POTATOES, FDC ID 522090, API, per 100 g edible portion, last checked 2026-03-14

Substances

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

8 substances in this food

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

Vitamin C (Ascorbate)

Antioxidant; supports iron absorption; neuronal SVCT2 transport

Fe²⁺

Iron

Oxygen transport; dopamine synthesis (tyrosine hydroxylase cofactor)

Zn²⁺

Zinc

Cofactor in neurotransmission and antioxidant enzymes; dopamine modulation

Mg²⁺

Magnesium

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

Ca²⁺

Calcium

Bone health; neurotransmission; interacts with vitamin D and K2

Vitamin B9 (Folate; 5-MTHF)

One-carbon metabolism; methylation; homocysteine recycling

References

• Resistant starch (cooled potatoes, green bananas) supports Bifidobacterium, Akkermansia; ↑ butyrate production; improved gut barrier
• B6 (chickpeas, potatoes, bananas, whole grains, soy) is a cofactor in the development of all key neurotransmitters
• Resistant starch forms when starchy foods are cooked and cooled (retrogradation), and cooled-then-reheated starch can still show improved resistant starch characteristics and lower glycaemic response in model foods.
• Anthocyanin-rich potato varieties (e.g., purple potatoes) contribute C3G-related polyphenols relevant to polyphenol diversity strategies.