Final Single Cell Protein

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INTRODUCTION Dried biomass of a single species of microbes that can

be used as protein source in the diet. Obtain from biomass of algae ,fungi, blue green algae ,cynobacteria , Bacteria. Rich in nutritive value. Vitamins & minerals. Nontoxic. Source for human food & animal feed.

History Saccharomyces cerevisie used as SCP in world war 1. Candida utilis in world war 2 Carls L. wilson in 1966 invent first coin term in

Massachusetts institute of technology In 1900S SCP recommended as health food. Natural occurring SCP Spirullina used in Africa, Mexico , Japan In ancient there is not known well about SCP.

Source Algae: Chlorella, Scenedesums , Spirullina, pichia. Fungi: Candida ulitis, C. lipolitica, Saccharomyces

crevevisie, A. Niger & Trico derma, A. fumigates. Agaricus, Bacteria: Aceromobacter, bacillus, mycobacterium, methylomonas, cellomonas, Alcaligens, Nocardia spp. fungi: Fusarium, penicillium.

Substrate used for SCP Co2 & sunlight. N- Alkenes , kerosene. Methane. H2, co2, gas oil. Methanol Cellulose {mushroom}. Sugar.

Advantage of microbes as SCP Microbial biomass double in short time. Relative small space required for mass culture. Can grow in cheap raw material in large quantity,

Secondary metabolites. Continuous culture without any climatic changes & culture in any locality. Easy digestible ,nutritive rich in vitamin, proteins.

Bacteria as single cell protein

1979 Shell Research Ltd (UK) manufactured bacterial bio mass of methylococcus capsulatus by using methane & hydrocarbon wastes from petroleum refineries . mass production.


Formulation of medium :Waste diesel oil,bagasse, cellulose pulp, methanol & are used as carbon sources. hydrocarbon

2. Fermentation:Temp- 25 to30 Small amount of ammonia is into fermented through its base.

3. Recovery : Harvested broth mixed with water & centrifuged to remove the andspent medium. Biomass is spray-dried to remove excess moisture that causes unpleasant odour during storage.

4.Toxicity testing: Toxicity testing is done with laboratory animals.

ALGAE As SCP Spirulina is a spirally coiled, multicellular filamentous

blue-green alga. It is naturally found in fresh waters, brackish waters , marine waters and moist soils. Bio-mass of spirulina is rich in source of protein(i.e.67%) vitamins, minerals and -carotenes.

Mass Culture Of Spirulina In this method solid wastage and suspended particles

are removed from the sewage by the Primary & Secondary water treatment. The harvested biomass of spriulina is washed with acid water (pH4) to remove the toxic pollutants. Use Of Spirulina: As therapeutic Agent:

Immunity provoking Agent: As Supplement Animal Feed: As Raw Material for Cosmetics:

Advantages Rich in protein and less fat content.

Produce easily, no seasonable, health food. Source of vitamins B ,A,C ,B12. Easily digestible except certain fungi ,yeast

Low cost substrate ,natural healthy food . Curable of many disease such as bronchial asthma, cholesterol level, resistance to viral disease, cure

allergy ,B- carotene prevent lungs cancer. Alternative to common food. Supplement animal feed and fodder.

Disadvantages High nucleic acid content ,RNA content must be

reduced. Risk of contamination by pathologic bacteria. Recovery of cell not easy task. High nucleic acid produce uric acid cause gout-kidney stone. Costly and Harvesting not easy. Bacterial disease formation. Fungi and yeast poor digestable.

Conclusion SCP must be safe to use. Nutritional comp. must be high amino acid. Must be accepted by general public. SCP must be functional. Economical viability and less cost . Alternative to food , effective in drought and

starvation , prospective for protein rich food.