Grain & Cereal · Fiber

Rice Bran Fiber

Provisional Moderate ScoreCompound

Hermetica Superfood Encyclopedia

Published March 15, 2026Last updated March 15, 2026Methodology · Editorial policy · Report an error

Evidence review status: unreviewed

Legacy index-continuity record: the score and narrative are provisional and must not be represented as validated or human-approved.

Review flags: AWAITING_SEMANTIC_VALIDATION

Provisional Summary

Rice bran fiber, rich in compounds like ferulic acid and gamma-oryzanol, promotes digestive regularity and supports cardiovascular health. Its bound phenolics provide potent antioxidant activity, while specific components like Rice Bran Hemicellulose B contribute to cholesterol modulation.

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Screened PMID Records

Reported Benefits

Pending

Synergy Review

At a Glance

CategoryGrain & Cereal

GroupFiber

Public Score StatusProvisional Moderate

Primary KeywordRice Bran Fiber supplement

Rice Bran Fiber close-up macro showing natural texture and detail — rich in zn²⁺, digestive, gut

Rice Bran Fiber — botanical close-up

Reported Benefits (Provisional)

Promotes digestive regularity by increasing gut motility and supporting healthy bowel movements.

Enhances satiety and aids in appetite control, contributing to healthy weight management.

Supports cardiovascular health by modulating cholesterol levels and reducing oxidative stress via gamma-oryzanol and tocotrienols.

Stabilizes blood sugar levels by slowing glucose absorption

Protects cellular health through its rich content of polyphenols and vitamin E, combating free radicals.

Supplies essential minerals, including magnesium, phosphorus, and manganese, for metabolic support.

Origin & History

Natural habitat

Rice bran fiber is derived from the outer layer of the rice grain (Oryza sativa). This nutrient-rich, gluten-free dietary fiber is known for its high insoluble fiber content and antioxidant properties. It is widely used in functional foods and supplements for its ability to support digestive health, cardiovascular wellness, and weight management.

“As a byproduct of rice milling, rice bran has been valued for centuries across Asian cultures for its rich nutrient content. Traditional uses often involved incorporating it into animal feed or less refined human diets. Modern extraction techniques have since refined its application, highlighting its benefits for gut health and cardiovascular support in functional foods.”Traditional Medicine

Research Narrative (Provisional)

Research on rice bran fiber primarily focuses on its impact on digestive health, its potent antioxidant properties, and its role in supporting cardiovascular wellness. Studies investigate its insoluble fiber content for gut motility and its bioactive compounds like gamma-oryzanol and tocotrienols for systemic benefits.

Preparation & Dosage

Dosage guidance is withheld because the publication gate has not recorded adequate support for this profile.

Nutritional Profile

- Insoluble Fiber - Polyphenols (e.g., gamma-oryzanol) - Tocotrienols (Vitamin E) - Magnesium - Phosphorus - Manganese

Reported Mechanism (Provisional)

Mechanism of Action

Rice bran fiber exerts its effects through several bioactive compounds. Its bound phenolics, notably ferulic acid, deliver potent antioxidant activity by scavenging free radicals and reducing oxidative stress. Rice Bran Hemicellulose B (RBHB) specifically contributes to cholesterol reduction and shows promise in inhibiting colon cancer cell proliferation. Additionally, compounds like gamma-oryzanol help modulate cholesterol levels, while some components may inhibit alpha-glucosidase, impacting glucose metabolism.

Clinical Narrative (Provisional)

Clinical research on rice bran fiber primarily investigates its impact on digestive health, cardiovascular wellness, and antioxidant properties. Studies have focused on its insoluble fiber content for enhancing gut motility and promoting regularity. Additionally, the bioactive compounds, such as bound phenolics like ferulic acid and steroidal gamma-oryzanol, are studied for their roles in reducing oxidative stress, modulating cholesterol levels, and their potential in colon cancer prevention. The provided research does not specify particular study designs or sample sizes.

Also Known As

Oryza sativaRice Bran Hemicellulose BRBHB

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These statements have not been evaluated by the Food and Drug Administration. This content is for informational purposes only and is not intended to diagnose, treat, cure, or prevent any disease.

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