Condensed milk was invented in the 1850s by Gail Borden as a way to preserve milk for long periods. It involves evaporating water from milk to increase its concentration and shelf life. Sugar is often added to further preserve it. The processing involves standardizing, heating, condensing the milk in a vacuum, homogenizing, cooling and crystallizing it before packaging. Condensed milk can last up to a year unopened but only 2-3 weeks once opened. It is commonly used in desserts, drinks, ice cream and confectionaries due to its thickness and sweetness.
4. Contents
• History
• Condensed Milk.
• Shelf life of condensed milk.
• Processing of Condensed Milk.
• Objective of manufacturing condensed milk.
• Packaging of condensed milk.
• Uses of condensed milk.
5. History of condensed milk
• Invented by Gail Borden in the
early 1850s, canned
condensed milk proved
invaluable as a military ration
in the 1860s. While fresh milk
had spoiled due to long supply
chains, canned milk was
nutritious, portable, long-
lasting and, crucially, safe.
Little surprise then, that sales
exploded in US towns and
cities after the war.
6. Condensed Milk;
Condensed milk is relatively a young dairy product
made from evaporated milk with sugar added.
Mostly found in the form of sweetened condensed milk.
Used in numerous dessert recipes.
Water content is removed from this milk.
7. Condensed milk is one
of the most concentrated
form of milk, thick in
consistency and having
high nutritional value.
Condensed milks are the
products obtained by
evaporating a part of the
water of whole minor
fully or partly skimmed
milk, with or without
the addition of sugar.
8. Shelf life of Condensed milk
While still in the can, condensed milk will have
a shelf life about a year.
Once opened ,the shelf life is reduced
• Sweetened condensed milk; two to three
weeks.
• Unsweetened condensed milk; only for two
week.
11. Processing of condensed milk
1.Receiving milk
2.Filtration/clarification (pre-heating)
3.Standardization
4.Fore-warming/pre-heating
5.Addition of sugar
6.Condensing
7.Homogenization
8.Cooling and Crystallization
12. 1-Receiving milk;
Milk received at temprature of 10 degree
celcius (50degree F).
Milk should be clean
• free from odour or off-flavour
• reasonably free from extraneous matter.
No abnormal milk should be accepted.
13. Milk is preheated to 35-40 degree
Celcious
Remove visible foreign matters
2-Filtrationclarification(pre-
heating)
14. 3-Standardization
To maintain legal standards in the finish product.
There are three stages for standardization of raw
milk;
a)Desired ratio of fats and solids not fat is
established.I t is usually 1:2.44.
b)Establishes the desired ratio of added sugar to
the total milk-solid.
c)Adjust the concentration of the finished
condensed milk to desired %of total solids.
15. 4-Fore-warmingpre-heating
This refer to heating standardized milk before
it condensed
These are ;
1)To ensure that finished product free from
micro-organisms and enzymes
2)To ensure uninterrupted boiling in the vacuum
pan
3)To controlling objectionable age-thickening in
the finished product
16. 5-Addition of sugar
For preserving the condensed milk without
sterilization
It is highly refined cane or beet sugar
Sucrose is added
Other sweetening agents, such as
• Corn syrup solids, glucose and dextrose (have
also replace sugar 5 to 25 %)
17. 6-Condensing
Removal of water from the standardized milk.
Advantages of condensing milk in vacuum;
• Dre economy of operation
• Rapidness of evaporation
• Protection of milk against heat demage
• The condensing is carried out at temp 130 to
145 degree celcious
18. 7- Homogenization
The hot and condensed milk is invariably
homogenized before it is cooled and
crystallized .
To abtain a uniform fat emulsion and reduce
fat separation to a minimum during storage.
A special type of homogenizer suitable for
highly viscous product is used at a total
pressure of 2500psi
19. 8-Cooling and Crystallization
• The condensed milk is then cooled .
• Prompt cooling is desirable to delay the
tendency of age-thickening and discoloration.
20. Packaging of Condensed Milk
• The products were traditionally packaged can
and sterilized in batches,or preserved by
adding of sugar.
• Now available in pouches.
21. Uses of Condensed milk
• 1- Condensed milks are widely used for re-
constituation into sweet milk drinks.
• 2- Condensed milks are very commonly used in the
preparation of tea or coffee.
• 3- They are also widely used in the ice-cream
preparation.
• 4- They are used in canday and confectionary
products.
• 5- They are often used in prepared foods in various
ways and form.
