# Brassica nigra (Black Mustard)

**Canonical URL:** https://ingredients.hermeticasuperfoods.com/ingredients/brassica-nigra
**Data Source:** Hermetica Superfoods Ingredient Encyclopedia
**Updated:** 2026-03-29
**Evidence Score:** 2 / 10
**Category:** Vegetable
**Also Known As:** Black mustard, True black mustard, Brown mustard, Indian mustard, Rai, Sarson, Mustard seed, Black mustard seed, Senape nera, Moutarde noire

## Overview

Black mustard (Brassica nigra) contains high levels of phenolic compounds providing [antioxidant activity](/ingredients/condition/antioxidant) measured at 1,366 mg Trolox equivalents per 100g in oil residues. The nigrin protein found in black mustard seeds shows preliminary cellular health-supporting properties in laboratory studies.

## Health Benefits

• [Antioxidant](/ingredients/condition/antioxidant) support through high phenolic content (1,366 mg Trolox equivalents/100g in oil residues) - evidence from compositional studies only
• Potential cellular health support via nigrin protein - preliminary lab evidence only
• Rich source of selenium, magnesium, calcium, vitamin C, B6, and dietary fiber - nutritional analysis only
• Contains beneficial fatty acids including oleic acid (22.96%) and linoleic acid (6.63%) - compositional data only
• May support overall wellness through glucosinolate-derived isothiocyanates - theoretical based on compound properties

## Mechanism of Action

Black mustard's antioxidant effects stem from phenolic compounds that neutralize [free radical](/ingredients/condition/antioxidant)s through electron donation mechanisms. The nigrin protein exhibits ribosome-inactivating properties that may influence cellular processes, though this mechanism requires further research. Glucosinolates present in black mustard break down into bioactive isothiocyanates when plant tissues are damaged.

## Clinical Summary

Current evidence for black mustard comes primarily from compositional studies measuring [antioxidant](/ingredients/condition/antioxidant) capacity rather than human clinical trials. Laboratory analyses have quantified phenolic content at 1,366 mg Trolox equivalents per 100g in oil processing residues. The nigrin protein has been identified and characterized in preliminary laboratory studies, but no human trials have evaluated its clinical effects. More robust clinical research is needed to establish therapeutic benefits in humans.

## Nutritional Profile

Black mustard seeds are nutrient-dense with approximately 28g fat, 28g protein, 12g dietary fiber, and 18g carbohydrates per 100g dry weight. Fat composition includes oleic acid (22-30% of fatty acids), erucic acid (up to 45% in seed oil), linoleic acid (15-20%), and linolenic acid (5-12%). Protein content is notable at ~28g/100g, featuring the bioactive nigrin protein with ribosome-inactivating properties identified in preliminary lab studies. Micronutrient profile includes selenium (~208 mcg/100g), magnesium (~370 mg/100g), calcium (~266 mg/100g), phosphorus (~828 mg/100g), iron (~9.2 mg/100g), zinc (~6.1 mg/100g), potassium (~738 mg/100g), vitamin C (~70 mg/100g in fresh leaves; minimal in seeds), and vitamin B6 (~0.4 mg/100g). Phenolic [antioxidant](/ingredients/condition/antioxidant) capacity measured at approximately 1,366 mg Trolox equivalents per 100g in oil residues. Key bioactive compounds include sinigrin (primary glucosinolate, ~120-200 mg/g dry weight in seeds), which hydrolyzes to allyl isothiocyanate upon enzymatic processing — this conversion is dependent on intact myrosinase activity and is reduced by heat processing. Also contains sinapic acid, quercetin glycosides, and kaempferol derivatives. Bioavailability note: glucosinolate-to-isothiocyanate conversion requires intact plant cell structure or raw/minimally processed preparation; cooking significantly reduces active allyl isothiocyanate yield. Mineral absorption may be partially limited by phytic acid content (~4.5% in seeds).

## Dosage & Preparation

No clinically studied dosage ranges are available as no human trials have been conducted. Traditional culinary use involves ground seeds as condiments or spices, but no standardized doses for extracts, powder, or oil have been established. Consult a healthcare provider before starting any new supplement.

## Safety & Drug Interactions

Black mustard is generally safe when consumed as food, but concentrated supplements may cause gastrointestinal irritation in sensitive individuals. The nigrin protein's ribosome-inactivating properties warrant caution with high-dose supplementation until safety data is established. Black mustard may interact with blood-thinning medications due to its vitamin K content. Pregnant and breastfeeding women should avoid concentrated black mustard supplements due to insufficient safety data.

## Scientific Research

No human clinical trials, RCTs, or meta-analyses on Brassica nigra were identified in the available research. The only PubMed-indexed study (PMID 26817385) evaluated physical, [antioxidant](/ingredients/condition/antioxidant), and fatty acid properties of black mustard seeds and oils in laboratory settings, not human subjects. All other evidence comes from compositional analyses or preclinical studies.

## Historical & Cultural Context

Brassica nigra seeds have been cultivated for centuries as a spice in culinary traditions, especially in Indian cuisine for tempering curries, pickles, and mustard condiments mixed with vinegar. The plant has been used worldwide primarily as a food ingredient rather than in specific traditional medicine systems.

## Synergistic Combinations

Turmeric, Broccoli sprouts, Garlic, Green tea, Vitamin C

## Frequently Asked Questions

### How much antioxidant activity does black mustard provide?

Black mustard oil residues contain 1,366 mg Trolox equivalents per 100g, indicating significant antioxidant capacity. This measurement comes from laboratory analysis of phenolic compounds rather than human studies.

### What is nigrin protein in black mustard?

Nigrin is a ribosome-inactivating protein found in black mustard seeds that shows cellular activity in laboratory studies. However, its effects and safety in humans have not been established through clinical trials.

### Can black mustard supplements cause side effects?

Black mustard supplements may cause stomach irritation, nausea, or digestive upset in sensitive individuals. The nigrin protein's biological activity also raises safety concerns that require further research before recommending supplementation.

### What nutrients are found in black mustard?

Black mustard provides selenium, magnesium, calcium, vitamin C, and vitamin B6. It also contains glucosinolates that break down into bioactive isothiocyanate compounds when the plant tissue is damaged.

### Is there clinical research on black mustard benefits?

Current research on black mustard consists mainly of compositional studies analyzing nutrient and compound content. No human clinical trials have been conducted to verify therapeutic benefits, making evidence preliminary at this time.

### What is the difference between black mustard seed and black mustard extract or oil?

Black mustard seed contains the whole food matrix with fiber, minerals, and phytonutrients intact, while black mustard oil is a concentrated lipid fraction rich in oleic acid and other fatty acids. Black mustard extracts may isolate specific compounds like phenolic antioxidants or the nigrin protein, offering higher potency but potentially different bioavailability profiles. The seed form provides nutritional density from multiple nutrient classes, whereas oils and extracts deliver targeted compound categories.

### Can I get sufficient black mustard nutrients from dietary sources alone?

Black mustard seeds are available as a culinary spice and functional food, providing selenium, magnesium, calcium, and B vitamins when consumed regularly in whole-food preparations or as mustard condiments. However, achieving therapeutic levels of concentrated antioxidants or nigrin protein through diet alone may be difficult, as typical culinary portions are small. Supplemental forms allow for standardized, higher concentrations of specific bioactive compounds that are harder to obtain from food-based consumption alone.

### Is black mustard supplementation appropriate for vegans or those with specific dietary restrictions?

Black mustard is a plant-based ingredient naturally suitable for vegan, vegetarian, and most dietary restriction patterns. Since it is a whole seed and does not typically contain animal-derived ingredients or common allergens like gluten, it fits most clean-label and allergen-conscious supplement formulations. Individuals with cruciferous vegetable sensitivities should consult a healthcare provider before supplementing, as black mustard belongs to the Brassicaceae family.

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