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  Section: General Biotechnology / Microbial Biotechnology
 
 
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Single Cell Protein (SCP) and Mycoprotein

 
     
 

Microorganisms Use as a Single Cell Protein (SCP)

Many groups of microorganisms are used as sources of proteins. Some of the microorganisms with their carbon and energy sources are given in Table 18.1.

 

Table 18.1. Single cell protein (SCP) and mycoprotein produced on the selected substrates.

Microgial microorganisms groups

Protein (% /100g., on dry weight basis)

Substrates

Algae

Chlorella pyrenoidosa (36)a

-

CO2 (10%), light

Scenedesmus acutus (20)b

-

CO2 sunlight

Spirulina maxima (15)b

53

CO2 (5%), combustion gases, bicarbonate, sunlight (in pond)

Bacteria

Achromobacter delvacvate

-

Diesel oil in fermenter

Bacillus megaterium

-

Collagen meat packing waste in fermenter

Cellumonas sp. (0.45)c

87

Bagasse

Methylomonas clara (0.5)c

13

Methanol

Pseudomonas so. (1.0)c

-

n-alkanes fuel oil

Actinomycetes

Nocardia sp. (0.98)c

-

n-alkanes

Thermomonpspora fusca (0.4)c

5.6

Cellulose pulp

Fungi

 

 

 

I. Yeasts

Candida lipolytica (0.88)c

65-69

n-alkanes

C. utilis (0.39)c

 

Potato starch waste

B. utilis

54

Sulphite liquor

Saccharomyces cerevisiae (0.5)c

53

Molasses

Saccharomyces cerevisiae (0.5)c

45

Beer

S. fragilis

54

Milk whey

Rhodotorula glutinis

-

Domestic sewage

Torulopsis sp.

-

Methanol

II.Moulds

Aspergillus niger

50

Molasses

Trichoderma viride

64

Straw, starch

Paecilomyces varioti

55

Sulphite waste liquor

III. Mushrooms

Agaricus campestris

36-45

Glucose

Morchella crassipes

31

Glucose, cheese whey, sulphite, liquor.

 

Content

Advantages of producing microbial protein

Microorganisms use as single cell protein (SCP)

Substrates used for the production of SCP

Nutritional values of SCP

Genetic improvements of microbial cells

Production of algal biomass

 

Factors affecting bio­mass production

 

Harvesting the algal biomass

 

Spirulina as SCP, cultivation and uses

Production of bacterial and actinomycetous biomass

 

Method of production

 

Factors affecting biomass production

 

Product recovery

Production of yeast biomass

 

Factors affecting growth of yeast

 

Recovery of yeast biomass

Production of fungal biomass (Other than Mushrooms)

 

Growth conditions

 

Organic wastes as substrates

 

Traditional fungal foods

 

 

Shoyu

 

 

Miso

 

 

Sake

 

 

Tempeh  

Mushroom culture

 

Historical background

 

Present status of mushroom culture in India

 

Nutritional values

 

Cultivation methods

 

 

Obtaining pure culture 

 

 

Preparation of spawns

 

 

Formulation and preparation of composts

 

 

Spawning, spawn running and cropping

 

Control of pathogens and pests

 

Cultivation of paddy straw mushroom

 

Cultivation of white button mushroom

 

Cultivation of Dhingri (Pleurotus sajor-caju)

 

Recipes of mushroom

(a) yield g/day (on dry weight basis); ( b) yield g/m2/day (on dry weight basis); (c) yield dry weight basis (g/g substrate used). Values in parantheses-denote yield of biomass.
 
     
 
 
     



     
 
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