Rubidium content of foods

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Tuesday, May 24, 2016 4:40 pm Email this article

Rubidium is an ultra-trace mineral used by humans which has been shown to have an antidepressant effect.

Here is the rubidium content of a couple of foods from a 1995 paper which analyzed 137 foods for their rubidium content.

Coffee contains 40 mg of rubidium per kilogram (2.2 pounds) dry material.

Black tea contains 100 mg of rubidium per kilogram (2.2 pounds) dry material.

Eight-five percent (85%) of the rubidium pass into these beverages.

Asparagus: 60 mg rubidium per kilogram

Asparagus contains more than 60 mg of rubidium per kilogram (2.2 pounds) dry material.

Fruit and Vegetables: 5-60 mg rubidium per kilogram

Fruits and vegetables accumulate between 5 to more than 60 mg per kilogram (2.2 pounds) dry weight, with asparagus containing the most.

Boiling Drastically Reduces Rubidium Conent

Boiling drastically reduces the rubidium content of vegetables.

This suggests eating raw vegetables.

Animal Foodstuffs are poor in rubidium

Animal foodstuffs are relatively poor in rubidium, although one paper refers to suggest that salami may have a relatively high rubidium content.

Cereals, Pasta, Bread: 1 mg rubidium per kilogram

Starch-and sugar-rich cereals, pasta, bread and confectionary only contain one (1) mg mg of rubidium per kilogram (2.2 pounds) dry material.

Abundant in the Earth’s Crust: 310 mg rubidium per kilogram

Rubidium is abundant in the earth’s crust which contains 310 mg of rubidium per kilogram (2.2 pounds).

Reference

Anke M, and Angelow L. Rubidium in the food chain. Journal of Analytical Chemistry, 1995; 352(1): 236-239.

Articles on the same subject can be found here:

• Rubidium