Fermented Vegetables

Overview

Fermented vegetables provide live probiotics, postbiotic compounds, and enhanced nutrient bioavailability, supporting gut-brain axis communication. Fermented Foods: Sauerkraut, kimchi, kefir, miso, kombucha provide live microbes + postbiotic peptides; improved SCFA pools; vagal signaling. Fermentation goes further: lactic acid bacteria acidify the medium, activating microbial and endogenous phytases, while also increasing B-vitamin levels.

Food Context

Synergies

• Supports gut microbiome diversity; dietary diversity (≥30 plant foods per week) supports microbial richness and resilience

Preparation

• Include in diverse fermented foods rotation; fermented foods provide live microbes + postbiotic peptides; improved SCFA pools; vagal signaling
• Enhanced nutrient bioavailability; fermentation goes further: lactic acid bacteria acidify the medium, activating microbial and endogenous phytases, while also increasing B-vitamin levels
• Some varieties may produce GABA through specific bacterial strains; Levilactobacillus brevis strains isolated from fermented foods can produce GABA

Essential Amino Acid Profile

Fermented Vegetables contribute plant protein. Pair with complementary protein sources (e.g. grains and legumes) for a balanced essential amino acid profile.

Recipes

no recipes found

Nutrient Tables (per 100 g)

Core nutrients

Nutrient	Amount per 100 g	% RDA per 100 g
Energy	116 kcal	—
Protein	8.9 g	—
Total fat	8 g	—
Saturated fat	1.2 g	—
Carbohydrates	4.4 g	—

Key micronutrients

Nutrient	Amount per 100 g	% RDA per 100 g
Iron	2 mg	11%
Zinc	1.6 mg	14.2%
Magnesium	52 mg	12.4%
Selenium	17.3 µg	31.5%
Calcium	46 mg	4.6%
Potassium	75 mg	2.2%
Folate	29 µg	7.2%
Vitamin B12	0 µg	0%
Vitamin B6	0.1 mg	5.4%

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	334 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, Tofu, salted and fermented (fuyu), FDC ID 174280, API, per 100 g edible portion, last checked 2026-03-14

Substances

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

9 substances in this food

Iron

Oxygen transport; dopamine synthesis (tyrosine hydroxylase cofactor)

Zinc

Cofactor in neurotransmission and antioxidant enzymes; dopamine modulation

Magnesium

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

Selenium

Antioxidant enzyme cofactor (GPx); supports redox balance

Calcium

Bone health; neurotransmission; interacts with vitamin D and K2

Potassium

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

Vitamin B9 (Folate; 5-MTHF)

One-carbon metabolism; methylation; homocysteine recycling

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

• Fermented Foods: Sauerkraut, kimchi, kefir, miso, kombucha - Live microbes + postbiotic peptides; improved SCFA pools; vagal signaling
• Fermentation goes further: lactic acid bacteria acidify the medium, activating microbial and endogenous phytases, while also increasing B-vitamin levels LeBlanc et al. 2011
• Fermentation produces beneficial organic acids and partially pre-digests starch and protein—improving both digestibility and glycaemic response
• See individual pages for: Sauerkraut, Kimchi, Pickles