9: MF Processing

Question 1

How is magnetic field generated?

Answer 1

By passing AC/DC current through a conductor or using a permanent magnet.

Question 2

What are the three types of MF?

Answer 2

• Static MF (SMF)
• Oscillating MF (OMF)
• Pulsed MF (PMF)

Question 3

What are the factors affecting the interaction of MF with food?

Answer 3

• Physicochemical properties of food: Diff food components, diff atoms and molecules, diff magnetisms.
• Characteristics of MF

Question 4

How does MF affect food enzymes?

Answer 4

• MF changes structure and conformation of enzymes which may inhibit or stimulate certain reactions.

Question 5

How does MF affect microorganisms?

Answer 5

• MF acts to activate certain cells components or modify its structure or functionality.
• Low freq MF inhibits growth and reproduction of cells
• Low freq, high intensity PMF destroy microbial cell membranes and organelles.
• SMF generates bactericidal free radicals. and modify ethanol-glucose conversion mechanisms, which increases ethanol production.
• OMF changes enzyme activity and limit cell growth
• PMF changes the expression and stability of intracellular protein.