Jaggery and sugar were added to the mango juice to prevent spoilage. Sugars help prevent the growth of microorganisms that cause food to spoil. Drying the mango juice in the sun further prevents spoilage by removing moisture which microorganisms need to grow.

1. Mangoes Round The Year

2. FOOD SPOILAGE
• When any food item smells bad, looks
different , tastes different then it is not fit for
eating. It is spoilt.
• If we eat spoilt food we may fall sick.

3. How do you come to know that food is not good to eat?

4. • By its appearance
• By its smell
• By its taste

5. Signs of deterioration of food.
appearance,
smell and taste
have changed.
others some
orange powdery
substance and
some also will
smell very badly.
Some of them will be covered
with a whitish substance,

6. ACIVITY-1
• leave food items such as bread, mangoes,
oranges, green coriander, banana, carrot,
cooked rice, milk, onion on the kitchen shelf
for about three to five days and observe what
happens to them.

7. FIND OUT
FRESH FOOD SPOILT FOOD SIGN OF
SPOILAGE
FRESH FOOD SPOILT
FOOD
SIGN OF
SPOILAGE

8. • You will realize that their appearance, smell
and taste have changed.
• Some of them will be covered with a whitish
substance, others some orange powdery
substance and some also will smell very badly.
• All these signs indicate that these foods are
not nutritious since they are infected

9. FIND OUT
• Look in your kitchen and write down names of
food items that
• Can get spoilt in 2-3 days
• ----------, ----------, ----------, ---------
• Can be kept for a week
• ---------, -----------, -----------, ---------
• Would not spoil till one month
• ---------, ------------, -----------, ---------

10. Causes of food spoilage
• Food spoilage is caused by two main factors,
namely;
• Natural decay in foods
• Contamination by micro-organisms

11. • Food is spoilt -
• If the food is stored in damp conditions
• due to change in season
• Growth of micro-organisms

12. ACTIVITY 2
• Take a piece of bread
• Sprinkle a few drops of water on it.
• Put it in a box.
• Observe it everyday and note the changes.

13. DAY BY TOUCH BY SMELL BY LOOKING
THROUGH HAND
LENSE
BY COLOUR
1
2
3
4
5
6
CHANGES IN THE BREAD

14. How Does Food Gets Spoilt?

15. Identify
• Raw mango Ripe mango

16. • What things are prepared from mangoes?
• Jam
• Pickle
• Chutney
• Aam papad

17. Think and tell
• In which season do we get raw mangoes?
• What is the taste of raw and ripe mangoes?
• Can we keep raw mangoes safe for a long time?
How?
• What things do your mother prepare from
raw/ripe mangoes? Find out.

18. Find Out
• How is mango pickle prepared?
• How is mango jam prepared?
• How is sweet mango chutney prepared?
• How is aam papad prepared?

19. Pickles
Salt, oil and vinegar is mixed along
with other spices .
This stops the growth of micro-
organisms which spoils the PICKLES.

20. Jam and chutney
Jaggery and Gur is mixed with fruit pulp.The
water is dried completely either in sun or
By putting the vessel on flame.

21. Discovery of fact
• SALT, VINEGAR, OIL, SUGAR and JAGGERY help
in keeping food safe for a long time.
• It does not allow the fungus to grow on food.
• Fungus spoil the food and make it unfit to
eat.

22. FOOD PRESERVATION
Vaccum
packing
Drying Pickling Refrigeration
Salting
Canning and
bottling
Sugaring

23. MAMIDI TANDRA - AAM PAPAD
• Chittibabu and Chinnababu bought
• A mat woven from the leaves of palm tree
• Poles of casuarina tree
• String made of coconut husk
• sugar
• jaggery

24. FIND OUT
• W hy did Chittibabu and Chinnababu add Jaggery and
sugar in the Mango juice?
• Why did they dry it in sun?