Does Barley Grass Contain Antioxidants?
Yes, barley grass (young leaves of Hordeum vulgare) is rich in antioxidants, including flavonoids like saponarin and lutonarin, superoxide dismutase (SOD) enzymes, and vitamins such as C and E. These compounds neutralize free radicals, with studies showing barley grass extracts have higher antioxidant activity than some fruits and vegetables in DPPH and ORAC assays.[1][2]
Which Antioxidants Are Most Abundant?
Flavonoids dominate, making up 0.5-1% of dry weight—saponarin alone accounts for over 70% of total flavone-C-glycosides. It also provides phenolic acids, chlorophyll, and carotenoid precursors. SOD levels reach 3,000-6,000 units per gram, higher than in mature barley.[3][4]
How Does It Compare to Other Greens?
Barley grass outperforms spinach and kale in total phenolic content (up to 2x higher per gram dry weight) and ferric-reducing power, but trails wheatgrass slightly in SOD. Versus blueberries, its ORAC score (antioxidant capacity) hits 1,000-2,500 μmol TE/100g fresh weight, comparable on a dry basis.[2][5]
What Do Studies Show About Its Effects?
In vitro tests confirm strong scavenging of hydroxyl radicals and peroxynitrite. Animal studies link barley grass supplementation to reduced oxidative stress in liver and kidneys, with one trial showing 15g daily intake lowered malondialdehyde (a damage marker) by 20-30% in smokers.[1][6] Human data is limited but suggests benefits for inflammation.
Potential Downsides or Limits?
Antioxidant levels vary by harvest stage (peak at 7-10 days) and processing—juiced forms retain more than powders. High vitamin K may interact with blood thinners. No major toxicity reported at 15-30g daily doses.[4][7]
How to Get the Most Antioxidants from It?
Consume fresh juice (25-50ml daily) or organic powder (3-6g). Pair with fats for fat-soluble antioxidants like vitamin E. Avoid heating above 40°C to preserve enzymes.[3]
[1]: Phytotherapy Research - Antioxidant Properties of Barley Grass (2015)
[2]: Journal of Agricultural and Food Chemistry - Flavonoids in Barley Grass (2008)
[3]: Food Chemistry - SOD and Phenolics in Young Barley Leaves (2012)
[4]: Nutrients - Barley Grass Bioactives Review (2019)
[5]: USDA ORAC Database (archived comparisons)
[6]: Journal of Medicinal Food - Barley Grass in Smokers (2017)
[7]: EFSA Panel on Dietetic Products - Safety Assessment (2020)