What Gives Cascara Its Antioxidant Power?
Cascara, the dried husk of the coffee cherry, is a surprising source of health-promoting compounds, offering beneficial nutrients from the fruit's outer layers. Its potent antioxidant capacity is mainly due to a high concentration of polyphenols and flavonoids, alongside Vitamin C.
Key Antioxidant Compounds in Cascara
- Polyphenols: These plant-based compounds include chlorogenic acid isomers, linked to cardiovascular and metabolic health; gallic acid, a strong antioxidant; mangiferin, with documented antioxidant potential; and rutin, a flavonoid with antioxidant and anti-inflammatory benefits.
- Flavonoids: A type of polyphenol contributing to antioxidant capacity.
- Vitamin C: An essential antioxidant for immune function and fighting oxidative stress.
The Potential Health Benefits of Cascara's Antioxidants
The antioxidants in cascara offer several potential health benefits:
- Combats Oxidative Stress: They neutralize free radicals, protecting cells and reducing damage linked to aging and disease.
- Reduces Inflammation: Its anti-inflammatory properties may help manage related conditions.
- Supports Brain Health: Cascara may increase BDNF levels, crucial for cognitive function and potentially reducing neurodegenerative disease risk.
- Boosts Immune Function: High antioxidant and Vitamin C content can strengthen the immune system.
- Supports Heart Health: Polyphenols like chlorogenic acid may improve cardiovascular health by helping regulate blood pressure and cholesterol.
How Brewing Affects Cascara's Antioxidant Content
The preparation method impacts the extraction of antioxidants. Research shows differences between hot and cold brewing.
| Feature | Hot Brew (e.g., 95°C for 8 minutes) | Cold Brew (e.g., 5°C-20°C for 24 hours) |
|---|---|---|
| Total Phenolic Content | Generally lower than cold brews in some studies. | Can be significantly higher in total phenolic compounds (polyphenols). |
| Total Flavonoid Concentration | Yields lower levels of flavonoids. | Results in higher total flavonoid concentrations. |
| Chlorogenic Acid | Concentrations can be similar to cold brews, depending on the specific method. | Concentrations can be similar to hot brews, depending on the specific method. |
| Caffeine Concentration | Can be lower depending on extraction time. | Can be higher with longer maceration at low temperatures, depending on temperature. |
Note: Optimal antioxidant extraction depends on time, temperature, particle size, and origin. Cold brewing may be more effective for maximum phenolic content according to some studies.
Cascara vs. Cascara Sagrada: A Critical Distinction
Do not confuse coffee fruit cascara with cascara sagrada, an herbal remedy from Rhamnus purshiana bark. Cascara sagrada has a strong laxative effect due to anthraquinones and its over-the-counter use as a stimulant laxative was removed by the U.S. FDA due to safety concerns with long-term use. Coffee cascara is a functional food known for antioxidants, not a laxative. This distinction is crucial.
Conclusion: The Value of Cascara's Antioxidants
The answer to "Does cascara have antioxidants?" is a clear yes. As a sustainable coffee industry byproduct, cascara is rich in potent antioxidants like polyphenols, flavonoids, and Vitamin C. These offer health benefits including combating oxidative stress and supporting cognitive and immune function. Preparation influences bioactive levels, with cold brewing potentially extracting more. Incorporating cascara into a healthy diet, perhaps as tea, can boost antioxidant intake and support wellness while offering a sustainable use for agricultural waste.
