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.