Good

Morning

Objectives : Today students of 8- Our Lady of la Naval

will be able to learn:

About Food Irradiation

About Preservation on Packaging

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).

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.

Examples:

What is

Preservation

on

Packaging?

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.

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.)

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.

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.

Steps In Packaging Food

in

Vacuum Pack Food With

an Automatic Machine

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

2. Place the food

inside the plastic

bag. Most machines

require using a

specific brand of bag.

3. Put the open edge of

the bag into the sealing

machine.

4. Press the

button, if

necessary, to

start the

vacuum and

sealing process.

5. Watch as the

vacuum pack food

machine withdraws

the air and the plastic

bag shrinks.

6. Wait for the

machine to stop its

operation, which

signaling that the

plastic bag has

properly been sealed.

7. Remove the

vacuum packed

food and store it in

the pantry, fridge

or freezer.

Thank You For

Watching