Hurdle technology uses a combination of preservation techniques, known as hurdles, to minimize microbial growth in foods. It works on the principle that microorganisms must overcome multiple hurdles simultaneously, which causes metabolic exhaustion and death. Some common hurdles used include reduced water activity, increased acidity, low temperatures, high temperatures, and preservatives. When hurdles are applied synergistically through techniques like good agricultural practices, formulation, packaging, and processing, they provide multi-target preservation of foods without completely eliminating microbes.

1. water activity
low
tem
p.
preservatives
pH
packaging
heating
Hurdle
Technology

2. Presented by -
Shashank paithankar
Minal Patil

3. Why Hurdle technology ?
Hurdle technology
Hurdles in food
How it works?
How and where to apply ?
Summary
Overview

4. Consumers eating out and
eating more ready to eat
products.
More demand for minimally
processed , fresh and natural
food products.
Emergence of new routes for
growth of microorganism.
Why Hurdle technology ?

5. Hurdle Technology
Combination of
more than one
preservation
techniques
pro-active and
preventative tool
minimize risk,but
do no eliminate
Synergistic results
achieved when
hurdles used in
combination

6. Hurdles in food
Some food could have
a positive or negative
effect on food based
on its intensity

7. How it works?
PRINCIPLE
Homeostatis An organism's ability to
stabalize itself
Metabolic
exhaustion
Microorganism completely use
up their energy to maintain
homeostasisand die
Stress
Reaction
Some bacteria become more
resistant under tress and
release stress shock protien
Multi-target
preservation
Application of multiple
hurdles synergistically

8. Types of hurdles used in food preservation
Some of the most important hurdles used are:
High temperature
low temperature
Reduced water activity
Increased Acidity
Preservatives
1.
2.
3.
4.
5.

13. Classification of hurdles

14. How and where to apply ?
Good agricultural practices
Formulation
packaging
processing
Distribution/
merchandising