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Products from Microorganisms . 2. Food and food related productsWhole cells productsCheese and yogurt Fermented fruits and vegetables Organic acidsAlcoholic beverages Flavoring agents: amino acids and nucleotides. 3. Non-food products EnzymeVitamins Antibiotics Biotech drugs. . Lactic
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1. Chapter 6 Fermented Food Products
2. Products from Microorganisms 2
3. 3
20. 20
47. Aspergillus niger Well-known production organism of citric acid and other organic acids.
Also a well-known over-producer of enzymes, in particular starch-degrading enzymes and plant cell-wall degrading
enzymes.
52. 1.Biochemistry of citric acid formation
EMP acetyl-CoA
Gulcose pyruvate
HMP oxaloacetic acid
53.
60. Purification of Citric Acid
1. Broth pre-treatment:heat
2. Filtration
3. Neutralize
CaCO3 + Citric Acid ? CO2+ Calcium Citrate
4. Acidifying
Calcium Citrate +H2SO4 ? Citric Acid +CaSO4
5.Concentration