... protein, 60-70%, also several times higher than nutrient-rich foods such as soy, beef, eggs.Proteins are the basic ... elements of life-sustaining.Spirulina is rich in β carrot element, 15 times higher than the carrots ... 3. Spirulina contains many essential trace elements, calcium, magnesium, sodium, potassium, phosphorus, iodine, selenium, iron, copper, zinc, iron deficiency can ...