All 4 super-fruits (mangosteen (pictured), noni, acai (pronounced ah-sigh-ee) and goji) are considered to be rich in antioxidants - these are beneficial chemicals (phytochemicals) in fruit, vegetables and other plant foods that neutralise the harmful "free radicals" our bodies produce.
Free radicals are made in the body during normal metabolism and during exposure to infection, UV light, pollution, radiation, and even exercise. Free radicals damage cells and speed up the ageing process.
Studies have shown an association between high intakes of antioxidants (especially from fruit and vegetables) and a lower risk of cancers and cardiovascular disease.
About our test
We tested 4 super-juice products for their antioxidant capacity:
- XanGo (mangosteen)
- Cook Islands Noni Juice
- MonaVie (acai)
- Himalayan Gold Super Goji Juice
Our super-juices were bought from health-food stores and through multi-level marketing networks. We also tested 5 ordinary supermarket juices to see how they compared.
Our lab used the industry-standard oxygen radical absorbance capacity (ORAC) test to determine the antioxidant capacity of the juices. ORAC measures the degree to which a substance neutralises free radicals and how long it takes to do so. These two measurements are then combined into a single unit or ORAC score per serving.
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