Essential Oil Antioxidant Capacity
Measured by the USDA and Tufts University Using the ORAC Scale
Essential oils are more than aromatic—they may also offer powerful antioxidant protection. Antioxidants help defend the body from damage caused by free radicals, unstable molecules that contribute to oxidative stress. This cellular stress has been linked to a wide range of health concerns, including:
-
Premature aging and wrinkles
-
DNA damage
-
Inflammation-related disorders
-
Heart disease, cancer, and diabetes
By neutralizing free radicals, antioxidants support cellular health, longevity, and immune defense.
🧪 What Is the ORAC Scale?
Developed by USDA researchers at Tufts University, the ORAC (Oxygen Radical Absorbance Capacity) scale is a laboratory method used to evaluate the antioxidant strength of foods and natural substances, including essential oils.
The ORAC test is designed to measure:
-
The duration of antioxidant activity
-
The degree of free radical inhibition
This makes it one of the most sensitive and reliable tools for understanding antioxidant capacity in natural products.
📊 How ORAC Values Are Expressed
Antioxidant capacity is expressed in:
-
Micromoles of Trolox Equivalent (µTE) per 100 grams
-
Trolox is a vitamin E analog used as a benchmark antioxidant standard
-
The test is accurate within ±5%
🌿 Essential Oils and the ORAC Scale
While ORAC values are more commonly associated with fruits, vegetables, and superfoods, certain essential oils rank extremely high in antioxidant capacity. Oils such as clove, cinnamon, oregano, thyme, and rosemary are known for their exceptional ORAC scores.
These oils are often used in blends designed to:
-
Support immune health
-
Protect the skin from environmental damage
-
Promote cellular regeneration
-
Preserve natural products due to their anti-microbial and anti-oxidative qualities
🛒 Explore BioSource Naturals Essential Oils
Browse our pure essential oils and blends to discover which formulas may support antioxidant protection in your wellness routine.
This information is for educational purposes only and has not been evaluated by the FDA. These products are not intended to diagnose, treat, cure, or prevent any disease.