Transcript recents technology on preserving foods

RECENTS TECHNOLOGY ON
PRESERVING FOODS
WEEKS 10
PROF. SIMON B.W.
OZONE
PRODUCE BY OZONE
GENERATOR
HOME APPLIANCES PURPOSES
PRICE : US$ 295.00/UNIT,
OUTPUT : 450 MG O3/Hr
REMOVE PERSISTENT BAD
ODOR AND KEEP ITS AWAY
OZONE MONITOR
Features:
Min, Max & Average ozone
levels displayed
Excellent Accuracy
Replaceable sensor head
Portable & wall mountable
Digital LCD Display (large
numbers)
HOW ozone generator WORKS
OZONE GENERATOR
PLASTIC
HOSE
Lightning Strikes The Ground 100-times A Second On The
Earth. This Is How Mother Nature Produces Ozone To Destroy
.
Odors And Contaminants
An electrical discharge (a
spark) splits an oxygen
molecule into two oxygen
atoms. (Electrical
discharge is also referred
to as corona discharge.)
These unstable oxygen
atoms combine with other
oxygen molecules. This
combination forms ozone.
FOOD PRESERVATION WITH OZONE
• Ozone can reduce contamination on
food and increase storage life. The
age-enhancing hormone ethylene is
instantly destroyed. This reduces
spoiling and keeps the food looking
fresh.
KEEPS THE FOODS LOOKING FRESH
Ozone Advantages
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most powerful oxidizer available
instantly destroys microbes
eliminates chemical storage
environmentally friendly
stops mold spores
does not affect product taste
no harmful by-products
can be used in air and water
MICROBE DESTRUCTION ON MEAT
14 DAYS IN OZONATED
COOLER
14 DAYS IN REGULER
COOLER
EFFECTS OF OZONE ON RED CHERRY
OZONE ADVANTAGES
improve water quality
faster growth rates
decrease deathloss
safe for fish
increases DO levels
destroys organics
DIALOG WEB ON OZONE :
ANONYMOUS WROTE
• Hello to all ozone-interested people!
For the time being I'm preparing a paper on Ozone
Disinfection. I'm writing about the usage of it in both
water treatment and Food Industry. But it is somehow
not that easy to find information about the usage of
ozone in the Food Industry. Some concrete
information....
If anyone knows about such info, I'd be glad if they
could share it with me.... I'm a Food Science student
and taking this work real serious....
Thanx to everyone in advance....
Regards
G. Karlsen
ANSWER: OZONE PTY Ltd.
ADMINISTRATOR
• Dear G. Karlsen,
The Electric Power & Research Institute (EPRI)
has published a very good compilation of
different papers regarding ozone use in the
food industry. All papers are scientifically
reviewed and very well written. If you provide
me your e-mail address, I will send it to you in
PDF format.
HOW OZONE KILLS BACS
• SEE PICTURES BELOW
EFFECTS OZONE ON BACTERIA
1. -Computer generated image of a bacteria cell
2 - Close-up of ozone molecule coming into contact with
bacterial wall
3 - Ozone penetrating and creating hole in bacterial wall
4 - Close-up effect of ozone on cell wall
5 - Bacterial cell after a few ozone molecules come into
contact
6 - Destruction of cell after ozone (cell lysing)
SET-UP EXPERIMENT FOR OZONE
TECHNOLOGY OR OZONE TREATMENT
• OZONE: GAS from ozone GENERATOR via a
plastic pipe line into a water tank,
• TREATED WATER CONTAINING OZONE GAS @
VARIES CONCENTRATION, @ VARIES DIPPING
TIME
• EXAMPLE : PATHOGEN DOSAGE
• E-coli (in clean water) 99.99% destruction at
0.25 mg/l for 1.6 minutes
• E-coli (in wastewater) 99.9% destruction at 2.2
mg/l for 19 minutes
Pathogen Dosage
• Aspergillus Niger (Black Mount) Destroyed by
1.5 to 2 mg/I
• Bacillus Bacteria Destroyed by 0.2 m/I within
30 seconds
• Salmonella Bacteria Very susceptible
• Salmonella typhimurium 99.99% destruction
at 0.25 mg/l for 1.67 minutes in water
• Virbrio Cholera Bacteria Very susceptible
TRY FOR YOUR own EXPERIMENT
• THE EFFECTS OF OZONE TREATMENTS ON STORAGE LIFE
AND QUALITY ATTRIBUTES ASSOCIATED WITH COMMON
CONSUMER PREFERENCES
• CHOOSE YOUR OWN TREATMENTS AND OWN
COMMODITIES.
• WE WILL DISCUSS your Assignment at June 10th-2008, I
MAY BE AWAY FROM Mei 31, up to JUNE 5th, GOING
ABROAD.
• LOOK RELATED INFORMATION S FROM THE WEBS, INSTEAD
OF MY WEB. simonbwidjanarko.wordpress.com
• Under : HALAMAN, MATA KULIAH:
• FISIOLOGI S-2