The document provides information about food irradiation and preservation through packaging. It discusses how food irradiation uses ionizing radiation to slow spoilage and kill microorganisms. The irradiation process involves moving food on carts under electron beams to achieve the desired dosage. Packaging helps control the environment around food to extend its storage life. Common packaging materials include plastic, glass, and paper, with each having specific appropriate and inappropriate reuse cases. The document also outlines the steps to vacuum seal food using an automatic machine.

1. Good
Morning

2. Objectives :
 Today students of 8- Our Lady of la Naval
will be able to learn:
 About Food Irradiation
 About Preservation on Packaging

3. Food Irradiation
 Food irradiation is the process of treating
food with a specific dosage of ionizing
radiation.[1] This treatment slows or halts
spoilage by retarding enzymic action or
destroying microorganisms and it can also
inactivate food borne pathogenic organisms
(reducing the risk of food borne illness).
Further applications include sprout
inhibition, delay of ripening, increase of juice
yield, and improvement of re-hydration.
Irradiation is also used to prevent the spread
of invasive insect species that could be
associated with fresh produce (e.g. fruit fly
pests).

4.  The Irradiation Process
A cart system moves the products to be irradiated under the electron
beam at a predetermined speed to obtain the desired dosage. Multiple
carts move products in and out of the irradiation area continuously
with throughput up to 500 pounds per hour. Maximum product
dimensions are 24 inches wide and 36 inches long. Product thickness
depends on density and electron energy. For example, 3.5 inches is the
maximum thickness for meat. Using X-rays increases thickness to
several feet for various products.
The Meat Laboratory
The meat laboratory,attached to the Linear Accelerator Facility, has
complete slaughter, cutting and processing operations with
refrigeration and frozen storage.An analytical laboratory may conduct
chemical, sensory, microbiological and physical analyses on the
irradiated product.
In addition to meat, the irradiation process can be conducted on a
wide variety of fresh vegetables, fruits, and spices, as well as some non-
food industrial products.

6. Examples:

10. What is
Preservation
on
Packaging?

11.  Packaging helps to control the immediate
environment of a food product, it is useful in
creating conditions that extend the storage
life of a food. Plastic materials are widely used
in food packaging because they are relatively
cheap, lightweight, and easy to form into
desired shapes.

12. Here are some tips in Safe Food packaging:
1.Packages from products other
than food should never be used
as food containers. They have
not been tested for safety with
food systems, and they may
contain small amounts of nonfood
residues. (For example, do not
use plastic laundry detergent
buckets for storing dry cereal.)

13. 2. Glass can be reused for all
foods and for all processes.
This is true regardless of what
food was originally packaged in
the glass container.There is an
exception to this rule: single-
use glass jars should not be
used for pressure processing
in the home canner.

14. 3. Do not reuse porous packaging
materials such as
paper, paperboard, and expanded
foams (for example, styrofoam
cups and foam meat trays).They
have air spaces that will harbor
food particles and
microorganisms.

15. Steps In Packaging Food
in
Vacuum Pack FoodWith
an Automatic Machine

16. 1. Clean and
prepare the
food that you
wish to
vacuum pack.

17. 2. Place the food
inside the plastic
bag. Most machines
require using a
specific brand of bag.

18. 3. Put the open edge of
the bag into the sealing
machine.

19. 4. Press the
button, if
necessary, to
start the
vacuum and
sealing process.

20. 5.Watch as the
vacuum pack food
machine withdraws
the air and the plastic
bag shrinks.

21. 6. Wait for the
machine to stop its
operation, which
signaling that the
plastic bag has
properly been sealed.

22. 7. Remove the
vacuum packed
food and store it in
the pantry, fridge
or freezer.

23. ThankYou For
Watching