Name: Johnathan Aziz
Partner: Fayez Elian
Topic: Preservation of food
Reminders:
The narrative is VERY important – it needs to be an summary of your research. It should
be relatively informal (whereas the report is formal)
Present the key ideas, information, knowledge and issues.
Copy this frame for the viewer When
The script must be 150-240 seconds in length (2.5 – 4 minutes)
resizing it keep the proportions. Place
No segment should be less than 4 seconds (with exception of titles)
all images first and then place frames
No segment should be more than 12 seconds
Segments should be between 6 and 9 seconds in general
The images should correspond to the narrative! Write the narrative first.
Do not refer to the images in the narrative.
Include Titles and Headings
Include Bibliography
Include Sources for images/movies
Include Credits
Title of Movie: Preservation methods
Narration
Duration
Elapsed
Time
(end of seg)
8s
The Preservation of Food
8s
Start Image
End Image
Food Preservation is a technique of
treating and handling food in a way
to maintain its value as food
9.5s
17.5s
Preservation Methods
5.5s
23s
Refrigeration
4s
27s
It slows down the growth of
microbes, but there is a slow loss of
nutrients
8s
35s
Canning
4s
39s
It destroys microorganisms,
although water-soluble nutrients
can be lost into liquid in the can
9s
48s
Drying
4s
52s
This method produces a
concentrated form of food, while
retaining most nutrients, but can
cause loss of some nutrients,
especially thiamin & vitamin C.
10 s
62s
Vacuum Sealing
4s
66s
Vacuum Sealing delays the growth
6s
of facultative anaerobes and inhibits
strict aerobes.
72s
Freezing
76s
4s
The advantages of freezing are that
it prevents microbial growth and it
causes bacteria to become
completely inactive. Another
advantage of freezing is that it has
no effect on taste or texture of most
meals.
11s
87s
The disadvantages are that the food
loses some B-Group vitamins and
vitamin C.
6s
93s
Smoking
4s
97s
By smoking, you can preserve foods
by drying and by incorporating
substances. The disadvantages are
that cancer in regions of the world
has been caused by eating a lot of
smoked foods.
9s
106s
Adding salt or sugar
4s
110s
It makes water unavailable for
microbial growth and the process
does not destroy nutrients, but it
increases the content of salt and
sugar in food.
9s
119s
High heat processing
4s
123s
igh heat processing destroys
microorganisms and stops autolytic
enzymes’ activity, but the food may
lose nutrients that are sensitive to
heat.
8s
131s
Chemical preservatives
4s
135s
They prevent the growth of
microbes, and the food retains all its
nutrients. The disadvantages are
that some people are sensitive to
chemical preservatives.
8s
143s
Ionizing radiation
4s
147s
Ionizing radiation causes food to
sterilize, decreases the velocity of
sprouting potatoes and expands the
shelf life of strawberries and
mushrooms
8s
156s
Since ionizing radiation expands
8s
shelf life of fresh foods, it can lead to
greater nutrient losses than if the
food was eaten earlier after
harvesting.
164s
Pickling
4s
170s
Today, pickling is only used to
produce “pickles” or pickled
cucumbers. This method uses
preservative qualities such as salt
combined with acid: acetic acid
(vinegar).
10s
180s
Acid is used because acidic
environments delay the growth of
bacteria in food.
6s
186s
Pasteurizing
4s
190s
This method is the process of
heating food to a high enough
temperature to kill certain but not
all bacteria and disable certain
enzymes. Effects on taste can be
minimized to your preferred
quantity.
9s
199s
Fermenting
4s
203s
Fermentation uses yeast produced
alcohol which is a good preservative
because it kills bacteria,
6s
209s
Carbonating
4s
213s
Carbonated water slows down
bacterial growth by taking away the
oxygen. Carbonated beverages (soft
drinks) contain a preservative
naturally.
8s
221s
Other methods
4s
225s
Other methods include lye, jellying,
jugging, modified atmospheres,
nitrogen gases, burial in the ground,
addition of weak acids, lactic
fermentation, ethanol and
emulsification etc.
11s
236s
There are many preservation
methods used to enable foods to last
longer.
Picture Bibliography
5s
240s
http://en.wikipedia.org/wiki/F
ood_preservation
http://www.bushrefrigeration.
com/images/refrig/recon2.jpg
http://images.homesite.com.a
u/assets/image/0005/135437/el
ec_fridge_botmnt_EBM4300S
B.jpg
http://www.bradburysapplian
ces.co.uk/products/frigadaire%
20fridge%20rle1o99a.jpg
https://napi.netflow.com/artscouncilnapavalle
y.org/images/bottorff_d_canni
ng_day.jpg
http://www.sksbottle.com/BlueBerryCanningJ
ars.jpg
http://www.dkimages.com/dis
cover/previews/775/113472.JP
G http://www.chinaasean.gov.cn/internal/app_pro
duct/upload/1352/1009244760.j
pg
http://www.sallysplace.com/images/dried_fruits.j
pg
http://img.alibaba.com/photo/
11627733/Automatic_Vacuum
_Sealer.jpg
http://www.kamado.com/disc
us/messages/1/17303.jpg
http://www.samstores.com/_i
mages/products/9freezerMFC07V4Denl.jpg
http://www.coolestgadgets.com/wpcontent/uploads/fridgefreezer2.jpg
http://img.timeinc.net/recipes/
i/may1/freezer-1602670-l.jpg
http://images.allrecipes.com/i
mages/19331.jpg
http://www.taste-ofarran.co.uk/data/pages/smokin
g.jpg
http://blog.americanfeast.com
/images/Salt%20Shaker.jpg
http://biology.clc.uc.edu/fank
hauser/Cheese/Root_Beer/02_
add_sugar_P8071375.jpg
http://appserv.pace.edu/empli
brary/thermometer.gif
http://www.britatom.gov.in/im
ages/food.gif
http://www.epscientific.com/p
roduct/images/pg19presrvdCon
t.jpg
http://www.diamondorganics.
com/images/uploads/2004_larg
e.jpg
http://www.cfsan.fda.gov/rad
ura.gif
http://www.aboutnuclear.org/
i/food/food.jpg
-
-
-
-
-
http://www.seriouseats.c
om/images/20070223pic
kjar-thumb.jpg
http://practicalaction.org
/practicalanswers/image
s/pickling_cucumbers.jp
g
- http://www.germesonline.com/direct/dbima
ge/50334328/Soya_Fatty
_Acid.jpg
http://www.khimairafar
m.com/images/WeckPail
.jpg
http://www.hmbana.org/i
mages/pasteurizing.jpg
http://www.questconnect
.org/IMAGES/tequila_fe
rmenting_vats.jpg
http://truetex.com/co2i.j
pg
http://www.acpco2.com/e
ng/images/menuphotos/s
oftdrinks2_photo.jpg
- http://www.kitchenbiodiesel.com/images/Ly
-
Info Bibliography
Music: Type, feel.
e.gif
http://www.ramasiam.co
m/pic/main/home.jpg
http://content.answers.co
m/main/content/wp/encommons/thumb/e/ef/22
5px-PreservedFood1.jpg