8. ACHKNOWLEG
EMENT
I wouldliketo convey our sincere
gratitude toour Biology teacher
forletting us todothis project.I
would liketothank myfriendsfor
helpingmein thisproject and a
9. special thanks toMrs. Gunjan
Nigam (Biology teacher) for
guiding throughout the project.I
sincerely haveworked hard to
completethis project. I tried to
make thisproject asGood as
possible.Last butnot least I
would liketothank myclassmate
and parents fortheir valuable
suggestion about thisproject.
10. Submitted to: Mrs Gunjan
Nigam
INTRODUCTIO
N
Whataremicrobes?
Whataremicrobes? Amicroorganism or
microbe isamicroscopic organismthat
16. Usesinfood:
Uses infood Microorganisms are used inbrewing,
winemaking, baking, pickling and other food-
making processes. They are also used to control
the fermentation process inthe production of
cultured dairy products such as yogurt and
cheese. The cultures also provide flavour and
aroma, and inhibit undesirable organisms.
17. Fermentation in food processing typically isthe
conversion ofcarbohydrates to alcohols and
carbon dioxide or organic acids using yeasts,
bacteria, or acombination thereof, under
anaerobic conditions. Fermentation in simple
terms is the chemical conversion of sugars into
ethanol. The science of fermentation is also
known as zymology, or zymurgy. Fermentation
usually implies that the action of microorganisms
is desirable, and the process isused to produce
alcoholic beverages such aswine, beer, and cider.
Fermentation is also employed inthe leavening of
bread (CO2 produced byyeast activity), and for
preservation techniques to produce lactic acidin
sour foods such as sauerkraut, dry sausages,
kimchi and yogurt, orvinegar (acetic acid)for use
in pickling foods.
18. Usesinwatertreatment:
Uses inwater treatment Specially-cultured
microbes are used in the biological treatment of
sewage and industrial waste effluent, a process
known as bioaugmentation. Bioaugmentation is
the introduction of a group of natural microbial
strains or a genetically engineered variant to treat
contaminated soil orwater. Usually the steps
involve studying the indigenous varieties present
in the location to determine if biostimulation is
possible. If the indigenous variety donot have the
19. metabolic capability to perform the remediation
process, exogenous varieties with such
sophisticated pathways are introduced.
Bioaugmentation is commonly used in municipal
wastewater treatment to restart activated sludge
bioreactors. Most cultures availablecontain a
research based consortium ofMicrobial cultures,
containing all necessary microorganisms ( B.
licheniformis ,B.thurengensis ,P.polymyxa ,B.
sterothemophilus ,Penicillium sp.,Aspergillus
sp.,Flavobacterium, Arthrobacter, Pseudomonas,
Streptomyces, Saccaromyces, Triphoderma, etc.).
Whereas activated sludge systems are generally
based on microorganisms likebacteria, protozoa,
nematodes, rotifers and fungi capable to degrade
biodegradable organic matter.