chapters 27 & 28
environmental microbiology
&
applied & industrial microbiology
microbial diversity and habitats
• habitat diversity
– unique C and E sources
– metabolic strategies
•fermentation  respiration
• heterotrophy  phototrophy
•symbioses
– ruminants
– mycorrhizae
– extreme environments
•pH
•temperature
•salinity
•pressure
biogeochemical cycling: the carbon cycle
biogeochemical cycling: the nitrogen cycle
nitrogen fixation
biogeochemical cycling: the sulfur cycle
life without sunshine
SO42–
H2S
microbial decomposition
composting & bioconversion
Chapter 27 learning objectives
1.
2.
3.
4.
5.
6.
Discuss the metabolic strategies and environments that
make microbes more versatile than multicellular
organisms.
Discuss the roles of bacteria in nitrogen, carbon and sulfur
cycling. What are the basic steps in these processes?
Who fixes nitrogen, and why are there so few types of
organisms that do?
Discuss the role of the chemoautotroph in extreme
environments.
Define and discuss bioremediation and bioaugmentation.
Discuss composting and bioconversion. Contrast the
different types of fuels made during bioconversion.
Chapter 28
microbial water pollution
- galactosidase
ONPG
ONP (yellow)
-glucuronidase
MUG
fluorescent compound
food preservation
microorganisms in food production
bioreactors
industrial products
Chapter 28 learning objectives
1. How are microorganisms used to indicate water pollution?
2. Generally, how are foods treated to avoid spoilage?
3. How are microbes involved in cheese, bread, alcohol and
thickener production?
4. How are microbes used in industry?
5. Discuss primary and secondary metabolites and how the
terms bioreactors, trophophase and idiophase relate to
the production of these metabolites.