what is the economic value of spirulina?

Spirulina is a rich source of  protein, minerals, fats, carbohydrate and vitamins. It is used as protein supplement in feeds of cattles and poultry. It is also used as a therapeutic agent in pharmaceutical industries. Spirulina can be grown easily on materials like waste water from potato processing plants (containing starch), straw, molasses, animal manure and even sewage, to produce large quantities. It provides large number of benefits at low cost of production. Thus it is economically very valuable.