# Cold-Pressed Peanut Oil (Arachis hypogaea)

**Canonical URL:** https://ingredients.hermeticasuperfoods.com/ingredients/cold-pressed-peanut-oil
**Data Source:** Hermetica Superfoods Ingredient Encyclopedia
**Updated:** 2026-03-29
**Evidence Score:** 2 / 10
**Category:** Seed Oils
**Also Known As:** Arachis hypogaea oil, groundnut oil, monkey nut oil, earth nut oil, goober oil, unrefined peanut oil, virgin peanut oil, expeller-pressed peanut oil

## Overview

Cold-pressed peanut oil (Arachis hypogaea) is rich in oleic acid, linoleic acid, and polyphenolic compounds including resveratrol and p-coumaric acid, which drive its antioxidant and [anti-inflammatory](/ingredients/condition/inflammation) activity. It exerts biological effects primarily through [free radical scaveng](/ingredients/condition/antioxidant)ing, inhibition of protein denaturation, and modulation of cancer cell proliferation pathways in preliminary laboratory models.

## Health Benefits

• May inhibit colon cancer cell growth (IC50 15.09 µg/mL in HCT-116 cells) - Evidence: Preliminary (in vitro only)
• Demonstrates [antioxidant activity](/ingredients/condition/antioxidant) through DPPH scavenging (IC50 23.37 µg/mL) - Evidence: Preliminary (in vitro only)
• Shows [anti-inflammatory](/ingredients/condition/inflammation) effects via protein denaturation inhibition (IC50 15.38 µg/mL) - Evidence: Preliminary (in vitro only)
• Contains higher phenolic content (up to 2.36 mg GAE/g) when cold-pressed vs solvent extraction - Evidence: Preliminary (analytical studies)
• Provides natural tocopherols and β-carotene (7.53-13.58 µg/100g) - Evidence: Preliminary (compositional analysis only)

## Mechanism of Action

Cold-pressed peanut oil scavenges [free radical](/ingredients/condition/antioxidant)s via its polyphenolic constituents—particularly resveratrol and p-coumaric acid—yielding an in vitro DPPH IC50 of 23.37 µg/mL, indicating moderate radical neutralization capacity. Its [anti-inflammatory](/ingredients/condition/inflammation) action involves inhibition of heat-induced albumin denaturation, a proxy for COX-pathway stabilization and prostaglandin modulation. Anticancer activity in HCT-116 colon cancer cells (IC50 15.09 µg/mL) is attributed to disruption of cell cycle progression, likely through downregulation of proliferative signaling such as the PI3K/Akt pathway, though precise receptor-level mechanisms remain uncharacterized in vivo.

## Clinical Summary

Current evidence for cold-pressed peanut oil is limited entirely to in vitro studies; no human clinical trials or animal intervention studies have been published specifically on this oil's cold-pressed fraction. Laboratory data demonstrate colon cancer cell (HCT-116) growth inhibition at an IC50 of 15.09 µg/mL and DPPH radical scavenging at an IC50 of 23.37 µg/mL, both considered preliminary findings that cannot be extrapolated to therapeutic human doses. Broader research on peanut oil constituents (oleic acid, resveratrol) in humans suggests [cardiovascular](/ingredients/condition/heart-health) and [anti-inflammatory](/ingredients/condition/inflammation) benefits, but these studies used different formulations and delivery matrices. Overall, the evidence base is at the lowest tier of scientific confidence, and clinical recommendations await controlled human trials.

## Nutritional Profile

Cold-pressed peanut oil is composed predominantly of fat (~99.9g per 100g), with negligible protein and carbohydrate content. Fatty acid profile: monounsaturated fats (MUFA) ~46-50g/100g, primarily oleic acid (C18:1, omega-9) at 36-67% of total fatty acids; polyunsaturated fats (PUFA) ~29-33g/100g, primarily linoleic acid (C18:2, omega-6) at 14-43%; saturated fats ~17-20g/100g, mainly palmitic acid (C16:0) at 8-14% and stearic acid (C18:0) at 1-4%. Minor fatty acids include arachidic acid (C20:0, ~1-2%), behenic acid (C22:0, ~2-3%), and lignoceric acid (C24:0, ~1%). Bioactive compounds: Vitamin E (tocopherols) ~15-21mg/100g, predominantly alpha-tocopherol (~10-13mg/100g) with minor gamma- and delta-tocopherol fractions; cold-pressing preserves significantly higher tocopherol content versus refined oil. Phytosterols ~200-220mg/100g, including beta-sitosterol (~114mg/100g), campesterol (~30mg/100g), and stigmasterol (~24mg/100g). Polyphenols: cold-pressed oil retains measurable phenolic compounds (~50-120mg GAE/kg oil), including resveratrol (0.02-0.19mg/100g), a notable differentiator from refined oils; also contains p-coumaric acid and luteolin in trace quantities. Squalene: ~30-50mg/100g. Phospholipids: trace amounts (~0.1-0.5mg/100g), higher than refined variants. Bioavailability notes: Fat-soluble vitamins (A, D, E, K) absorption is facilitated by the lipid matrix; tocopherol bioavailability is enhanced due to absence of high-heat processing; resveratrol bioavailability from oil matrix is low but measurable; phytosterols compete with dietary cholesterol for intestinal absorption, contributing modest LDL-lowering potential at dietary doses. Cold-pressing preserves heat-labile phenolics lost during refining, bleaching, and deodorization, making this a nutritionally superior form versus commercially refined peanut oil.

## Dosage & Preparation

No clinically studied dosage ranges for cold-pressed peanut oil in humans have been established. In vitro studies used concentrations of 7.31-15.09 µg/mL for anti-tumor and [anti-inflammatory](/ingredients/condition/inflammation) effects. Consult a healthcare provider before starting any new supplement.

## Safety & Drug Interactions

Cold-pressed peanut oil is contraindicated in individuals with peanut allergies (Arachis hypogaea), as residual Ara h proteins—particularly Ara h 1, Ara h 2, and Ara h 3—may persist even after cold-pressing and trigger IgE-mediated anaphylaxis. It may potentiate the effects of anticoagulant medications such as warfarin due to its vitamin E content, warranting caution in patients on blood thinners. High intake of linoleic acid-rich oils like peanut oil may theoretically shift the omega-6 to omega-3 ratio unfavorably, promoting low-grade [inflammation](/ingredients/condition/inflammation) when not balanced with omega-3 sources. Pregnancy safety data are absent for supplemental doses; culinary use in non-allergic individuals is generally regarded as safe based on long-standing dietary history.

## Scientific Research

No human clinical trials, RCTs, or meta-analyses on cold-pressed peanut oil were identified. Evidence is limited to one in vitro study (PMC12078917) showing anti-tumor activity against HCT-116 colon cancer cells, and one randomized double-blind crossover challenge (n=60, PMID 9133891) examining allergenic potential, finding crude peanut oil triggered reactions in 10% of peanut-allergic subjects.

## Historical & Cultural Context

No historical or traditional medicine uses for cold-pressed peanut oil were documented in the available research sources. Current evidence focuses solely on modern analytical and in vitro studies.

## Synergistic Combinations

Vitamin E, selenium, omega-3 fatty acids, green tea extract, turmeric

## Frequently Asked Questions

### Can cold-pressed peanut oil help fight cancer?

In vitro research shows cold-pressed peanut oil inhibits HCT-116 colon cancer cell growth with an IC50 of 15.09 µg/mL, suggesting meaningful cytotoxic activity in a lab setting. However, no human or animal trials have confirmed this effect, and in vitro IC50 values rarely translate directly to effective or safe human doses. It should not be used as a cancer treatment or adjunct therapy without clinical evidence.

### Is cold-pressed peanut oil safe for people with peanut allergies?

Cold-pressed peanut oil is not considered safe for individuals with peanut allergies. Unlike highly refined peanut oil, which removes most allergenic proteins, cold-pressed oil retains residual Ara h proteins (Ara h 1, Ara h 2, Ara h 3) that can trigger severe IgE-mediated allergic reactions including anaphylaxis. Allergic individuals should avoid this oil entirely and consult an allergist before any exposure.

### What antioxidants are found in cold-pressed peanut oil?

Cold-pressed peanut oil contains polyphenolic antioxidants including resveratrol, p-coumaric acid, and tocopherols (vitamin E isoforms), which are largely preserved due to the low-heat extraction process. These compounds collectively contribute to a DPPH radical scavenging IC50 of 23.37 µg/mL in laboratory assays. Refined peanut oil loses a significant portion of these bioactives during high-temperature processing, making the cold-pressed variant nutritionally distinct.

### How does cold-pressed peanut oil reduce inflammation?

Cold-pressed peanut oil demonstrates anti-inflammatory activity through inhibition of heat-induced protein denaturation in vitro, a standard model for assessing COX-related inflammatory pathway modulation. Its oleic acid content (approximately 44–56% of fatty acid composition) may also suppress pro-inflammatory cytokine expression by activating PPAR-γ receptors. These findings are preliminary and have not been validated in human inflammatory disease models.

### What is the difference between cold-pressed and refined peanut oil for health?

Cold-pressed peanut oil is extracted mechanically at temperatures below 49°C (120°F), preserving heat-sensitive polyphenols such as resveratrol and p-coumaric acid as well as tocopherols that contribute to antioxidant and anti-inflammatory activity. Refined peanut oil undergoes degumming, bleaching, and deodorizing at high temperatures, stripping most bioactive compounds but also reducing allergenic protein content. For health purposes, cold-pressed retains superior phytochemical profiles; for allergy safety, refined oil is generally preferred by medical guidelines.

### What is the recommended daily dosage of cold-pressed peanut oil as a supplement?

There is no established RDA for cold-pressed peanut oil supplementation, as most consumption occurs through dietary sources rather than supplements. Typical culinary use ranges from 1-2 tablespoons (14-28g) daily, which provides approximately 120-240 calories and beneficial fatty acids. Clinical studies on therapeutic doses have not been standardized, so dosing should be discussed with a healthcare provider based on individual health goals and dietary needs.

### Does cold-pressed peanut oil interact with blood thinners or other common medications?

Cold-pressed peanut oil is high in vitamin E and linoleic acid, which have mild anticoagulant properties that could theoretically potentiate blood thinners like warfarin or aspirin. Individuals taking anticoagulant medications should maintain consistent peanut oil intake and consult their healthcare provider, as sudden increases in consumption may affect medication efficacy. There are no major documented interactions with other common medications, though those on lipid-lowering drugs should note that peanut oil is calorie-dense and fat-rich.

### How does the bioavailability of phenolic compounds in cold-pressed peanut oil compare to cooked or refined peanut oil?

Cold-pressed peanut oil retains significantly higher phenolic content and antioxidant activity compared to refined or heated peanut oils, which lose these compounds through processing and heat exposure. The polyphenols in cold-pressed varieties are more readily available for absorption in their native form, though the actual bioavailability in human subjects requires further clinical research. Consuming cold-pressed peanut oil with dietary fats and meals enhances the absorption of its fat-soluble antioxidants compared to consumption on an empty stomach.

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