# Black Rice (Oryza sativa)

**Canonical URL:** https://ingredients.hermeticasuperfoods.com/ingredients/black-rice
**Data Source:** Hermetica Superfoods Ingredient Encyclopedia
**Updated:** 2026-03-31
**Evidence Score:** 2 / 10
**Category:** Ancient Grains
**Also Known As:** Purple rice, Forbidden rice, Emperor's rice, Black glutinous rice, Chinese black rice, Hei mi, Beras hitam, Riceberry, Indica black rice, Pigmented rice, Anthocyanin rice

## Overview

Black rice (Oryza sativa) contains high concentrations of anthocyanins, particularly cyanidin-3-glucoside, which provide potent antioxidant and [anti-inflammatory](/ingredients/condition/inflammation) properties. These compounds suppress nitric oxide production in macrophages and scavenge free radicals to protect against [oxidative stress](/ingredients/condition/antioxidant).

## Health Benefits

• [Anti-inflammatory](/ingredients/condition/inflammation) effects: Suppresses nitric oxide production and inhibits inducible nitric oxide synthase expression in macrophage cells (in vitro evidence, p<0.05)
• [Antioxidant activity](/ingredients/condition/antioxidant): Anthocyanins scavenge peroxyl and hydroxyl radicals and prevent DNA strand scission (in vitro evidence)
• LDL oxidation prevention: Extract shown to suppress LDL oxidation through anthocyanin activity (in vitro evidence, p<0.05)
• Potential anti-diabetic properties: Bran fraction demonstrated anti-diabetic abilities (preliminary evidence, no human trials)
• Nutrient density: Contains essential amino acids, vitamins (thiamin, pyridoxine-β-glucoside), minerals (zinc, iron), and bioactive compounds like γ-oryzanol

## Mechanism of Action

Black rice anthocyanins, primarily cyanidin-3-glucoside and peonidin-3-glucoside, inhibit inducible nitric oxide synthase (iNOS) expression in activated macrophage cells, reducing [inflammatory](/ingredients/condition/inflammation) nitric oxide production. These compounds also directly scavenge peroxyl and hydroxyl radicals through electron donation mechanisms. The anthocyanins prevent oxidative DNA damage by neutralizing [reactive oxygen species](/ingredients/condition/antioxidant) before they can cause strand scission.

## Clinical Summary

Current evidence for black rice is primarily from in vitro studies demonstrating significant [anti-inflammatory](/ingredients/condition/inflammation) effects with p<0.05 statistical significance in macrophage cell models. Laboratory studies show anthocyanin extracts effectively scavenge [free radical](/ingredients/condition/antioxidant)s and prevent DNA strand breaks in cell culture systems. However, human clinical trials are limited, and most research has focused on cellular mechanisms rather than clinical outcomes. The evidence strength is considered preliminary, requiring human studies to confirm therapeutic benefits.

## Nutritional Profile

Black rice (Oryza sativa, pigmented variety) per 100g dry uncooked grain: Calories ~340 kcal, Carbohydrates ~72-75g (complex starch, including resistant starch ~2-4g), Protein ~8-9g (higher than white rice; contains all essential amino acids but limiting in lysine), Fat ~2.5-3.5g (predominantly unsaturated: oleic and linoleic acids), Dietary Fiber ~2-4g (mostly insoluble). Key Micronutrients: Iron ~3.5mg (moderate bioavailability; non-heme form, enhanced by vitamin C co-consumption), Zinc ~2.0-2.5mg, Magnesium ~120-130mg, Phosphorus ~250-300mg, Potassium ~250mg, Manganese ~2.5-3.0mg (notably high, supporting [antioxidant](/ingredients/condition/antioxidant) enzyme function), Vitamin E (tocotrienols) ~0.5-1.0mg, Thiamine (B1) ~0.3mg, Niacin (B3) ~4-5mg, Vitamin B6 ~0.4mg. Bioactive Compounds: Anthocyanins (primary pigments) ~200-400mg/100g dry weight, predominantly cyanidin-3-O-glucoside (~80% of total anthocyanins) and peonidin-3-O-glucoside (~12-15%); these are concentrated in the bran layer. Total phenolic content ~2,000-3,000mg GAE/kg. Proanthocyanidins and flavonoids present in measurable quantities. Bioavailability Notes: Anthocyanin bioavailability is relatively low (~1-2% absorption) and is influenced by food matrix, gut microbiota, and pH; cooking can reduce anthocyanin content by 15-30%. Protein digestibility (~75-80%) is lower than white rice due to intact bran structure. Phytic acid content (~0.8-1.2g/100g) may reduce mineral bioavailability; soaking or sprouting reduces phytate levels. Resistant starch survives digestion and acts as [prebiotic](/ingredients/condition/gut-health) substrate.

## Dosage & Preparation

No clinically studied dosage ranges have been established for black rice in human trials. In vitro studies used standardized extracts containing cyanidin 3-glucoside and peonidin 3-glucoside at effective [antioxidant](/ingredients/condition/antioxidant) concentrations, but specific doses were not quantified. Consult a healthcare provider before starting any new supplement.

## Safety & Drug Interactions

Black rice is generally recognized as safe when consumed as a food, with no significant adverse effects reported in healthy individuals. No known drug interactions have been documented, though the high fiber content may affect absorption timing of medications. Individuals with rice allergies should avoid black rice products, and those with diabetes should monitor [blood glucose](/ingredients/condition/weight-management) as with any carbohydrate-containing food. Safety during pregnancy and lactation is presumed safe based on traditional food use, but supplemental extracts lack specific safety data.

## Scientific Research

Current evidence for black rice is limited to in vitro and animal studies, with no human clinical trials, RCTs, or meta-analyses reported in the research dossier. The primary study cited used murine RAW264.7 macrophages to demonstrate [anti-inflammatory](/ingredients/condition/inflammation) effects of a standardized black rice extract (BRE), but lacked sample size specifications and human validation.

## Historical & Cultural Context

Black rice has been recognized in Asian traditional medicine, particularly within Chinese systems, for its nutrient density and purported health benefits. Its longstanding cultivation has emphasized nutritional value rather than formalized medicinal protocols, with traditional use focusing on it as a pigmented, nutrient-rich grain.

## Synergistic Combinations

Green tea extract, vitamin C, resveratrol, quercetin, turmeric

## Frequently Asked Questions

### How much anthocyanin is in black rice compared to blueberries?

Black rice contains approximately 320mg of anthocyanins per 100g, which is significantly higher than blueberries at around 163mg per 100g. The primary anthocyanin in black rice is cyanidin-3-glucoside, comprising about 70-80% of total anthocyanin content.

### Can black rice help reduce inflammation markers?

In vitro studies show black rice anthocyanins suppress nitric oxide production by up to 60% in activated macrophages and inhibit iNOS enzyme expression. However, human studies measuring inflammatory markers like C-reactive protein or interleukin levels are currently lacking.

### Is black rice better than brown rice for antioxidants?

Black rice contains 6-8 times more anthocyanins than brown rice and demonstrates superior free radical scavenging capacity in laboratory tests. While brown rice provides different antioxidants like vitamin E and phenolic acids, black rice's anthocyanin profile offers unique protective benefits.

### What is the best way to cook black rice to preserve anthocyanins?

Steaming or boiling black rice for the minimum time needed (25-30 minutes) helps preserve anthocyanin content, as prolonged high heat can degrade these compounds. Studies suggest avoiding excessive water and cooking times to maintain optimal antioxidant levels.

### Does black rice affect blood sugar differently than white rice?

Black rice has a lower glycemic index than white rice due to its higher fiber and anthocyanin content, which may slow glucose absorption. The fiber content is approximately 3-4 times higher than white rice, potentially leading to more gradual blood sugar increases.

### What is the bioavailability of anthocyanins from black rice compared to taking anthocyanin supplements?

Black rice anthocyanins from whole food sources are delivered with fiber, phytonutrients, and other compounds that may enhance absorption and metabolic utilization compared to isolated anthocyanin extracts. However, anthocyanins are generally unstable during digestion, with bioavailability estimates ranging from 0.5–10% depending on food matrix, cooking method, and individual gut microbiota. Consuming black rice as part of a varied diet with other polyphenol sources may provide synergistic benefits that isolated supplements cannot replicate.

### Is black rice safe to consume daily, and are there any populations who should limit intake?

Black rice is a whole grain food and is safe for daily consumption in typical dietary portions (½–1 cup cooked) for most healthy adults, children, and the elderly. Individuals with phytic acid sensitivity or those following a strict low-oxalate diet may wish to moderate intake or soak/sprout black rice to reduce anti-nutrient content. Those taking anticoagulant medications should maintain consistent consumption rather than making large sudden changes, as anthocyanins have mild antiplatelet properties.

### What does current clinical evidence show about black rice's effects on cardiovascular health in humans?

While in vitro and animal studies demonstrate that black rice anthocyanins suppress LDL oxidation and reduce inflammation markers, robust human clinical trials remain limited. Most human evidence is observational or short-term, showing associations between whole grain consumption and improved lipid profiles rather than proving causation specific to black rice. Larger, longer-duration randomized controlled trials are needed to establish definitive cardiovascular benefits at specific dietary doses.

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