Single cell protein

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In essence a Single cell protein is a protein extracted from cultured algae, yeasts, or bacteria and used as a substitute for protein-rich foods, especially in animal feeds. Many types of animal feeds contain single cell proteins.

[edit] Uses

A Single cell protein has the capability to be used and transformed into one of the most immence sourses of supplemental proteins in animal, mainly livestock feeds. In come locations the Single Cell Protein could become the Main protein source to feed domistic livestock, this however will depend on the population growth and the other protein sources available.

[edit] Origins

Single cell proteins develope when microbes ferment their waste materials. Examples are wood and straw. The problem with extracting single cell porteins from the wastes is the dilution and cost. They are found in very low concentrations usually less than $5%$ . Luckly scientists have developed a way to increase the concentrations. These include Centrifugation Precipitation coagulation and filtration these methods can be combined with semi-permeable membranes.

The next problem to be addressed is the cost. The methods to increase the concentrations to adequete levels, and de-watering process require equipment that is expensive and is not feasable for small-scale operations. For most instances the de-watering process that is required for storage and stabilization of Single Cell proteins is not economical. The Single Cell Protein needs to be dehydrated to aproxamatly $10%$ moisture content. It can also be condensed and acidified to prevent spoialge. Perhaps the most economical method and the simpleist is to feed the product shortly after it is produced.