Dairy Ingredients for Food Processing

122 Chapter 4

spray of atomized droplets meets the hot air
and spray evaporation takes place, simultane-
ously cooling the air. After the drying of the
spray in the chamber, the dry product is sepa-
rated from the exhaust drying air (see details
in Chapter 6 ). Drying is also accomplished in
two or three stages to allow for instantization
(agglomeration) of particles. Agglomerated
powders hydrate with ease. A general sche-
matic is provided in Figure 4.19.

Suggested Reading

Dairy Processing Handbook. Tetra Pak Processing
Systems, Lund, Sweden.
Frye , C.P. and Kilara , A. 2008. “ Milk from Farm to
Plant. ” Chapter 7. Dairy Processing and Quality
Assurance. Chandan , R.C. , Kilara , A. , Shah , N.P.
(eds). Wiey - Blackwell , Ames, IA. 169 – 187.
Walstra , P. , Geurts , T.J. , Noomen , A. , Jellema , A. and
van Boekel , M.A.J.S. 1999. Dairy Technology —

Figure 4.19. Schematic of a spray drying unit. Reproduced with permission from Tetra Pak.

3

4

1

2

Concentrated milk

Air

Powder

6

8

7

5

Principles of Milk, Properties and Processes. Marcel

Dekker , New York.

Hansen , R. (editor). 1985. “ Evaporation Membrane

Filtration and Spray Drying in Milk Products and

Cheese Production. ” Pub. North European Dairy

JournalVanlose , Denmark.

3 - A Sanitary Standards. http://www.3 - a.org.

Center for Food Safety and Applied Nutrition. “ National

Conference on Interstate Milk Shipments Model

Documents — Milk Safety References. ” http://www.

cfsan.fda.gov/ ear/p - nci.html.

U.S. Department of Health and Human Services. 2003.

PMO, Grade “ A ” Pasteurized Milk Ordinance, revi-

sion. Department of Public Health, Food and Drug

Administration, Washington, DC.

U.S. Department of Health and Human Services. 2003

Procedures, Procedures Governing the Cooperative

State - Public Health Service/Food and Drug Admin-

istration Program of the National Conference on

Interstate Milk Shipment, revision. Department of

Public Health, Food and Drug Administration,

Washington, DC.

U.S. Department of Health and Human Services. 2003.

Methods of Making Sanitation Ratings of Milk

Shippers, revision. Department of Public Health,

Food and Drug Administration, Washington, DC.