ib biology lactose free milk

LACTOSE FREE MILK Qn: Explain the use of lactase in the production of lactose free milk.

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LACTOSE FREE MILK

Qn: Explain the use of lactase in the production of lactose free

milk.

LACTOSE FREE MILK.

Lactose is a disaccharide sugar found in milk consisting of a galactose and glucose sugar.

(DISACCHARIDE) (MONOSACCHARIDES)

Absorbed into the blood stream by the villi in the

ileum

Lactose intolerant people are unable to produce the enzyme lactase hence suffer from:

•Cramping

•Excess gassing and

•Diarhoea because bacteria in their guts feed on the unbroken down lactose producing fatty acids and methane.

Around 90% of all humans show some kind of lactose intolerance

LACTOSE GLUCOSE + GALACTOSELACTASE

Produce lactose free milk

PRODUCTION OF LATOSE FREE MILK

• Lactase enzyme is extracted form yeast

• The enzyme is immobilized

ENZYME IMMOBILIZATIONRequirements

•Calcium chloride

•Mixture of sodium alginate and lactase enzyme

Procedure

•Sodium alginate containing the lactase enzyme is added to the calcium chloride solution

•This forms small beads in which the lactase enzyme is immobilized

•The beads are allowed to harden for a few minutes and then a tea strainer is used to separate the beads from calcium chloride solution.

LACTOSE FREE MILK.

DIAGRAMATIC ILLUSTRATION

Pasteurization process

QualityControlphase

Packagingplant

Column of

Immobilized

lactase

Skimmed

Milk input

LACTOSE FREE MILK.

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