The document describes two main processes for manufacturing powdered infant formula: dry blending and wet blending (spray drying). Dry blending involves mixing dry ingredients while wet blending involves homogenizing, pasteurizing, and spray drying wet ingredients. Wet blending has advantages like ensuring uniform distribution and destroying harmful bacteria, but requires strict separation of wet and dry areas to prevent contamination. Both processes require testing ingredients for contamination and maintaining good manufacturing practices.

1. LECTURE NOTES 05/08 “WET AND DRY MIXING PROCESS” SAIFUL IRWAN ZUBAIRI PMIFT, Grad B.E.M. B. Eng. (Chemical-Bioprocess) (Hons.), UTM M. Eng. (Bioprocess), UTM ROOM NO.: 2166, CHEMISTRY BUILDING, TEL. (OFF.): 03-89215828, FOOD SCIENCE PROGRAMME, CENTRE OF CHEMICAL SCIENCES AND FOOD TECHNOLOGY, UKM BANGI, SELANGOR 28 MAY 2008

6. Dry Blending Process - Rotating Mixer

14. “ PILOT SCALE OF THE SPRAY DRYING MACHINES”

18. UNIT OPERATION OF THE PLATE HEAT-X