Milk… It Does a Body Good!

Got milk?  Contains all major nutrients… Protein Fat Carbohydrate Vitamins Minerals

PROTEIN  Major Protein CASEIN  Micelles= casein + minerals… gives milk it’s white color  Coagulated by acids  Proteins settle out as white clumps called CURDS  Found in milk that is CURDLED  You can turn this stuff into cheese or glue…

PROTEIN  Major Protein Whey  Found in water-based liquid after fat & casein are removed  Coagulated by heat

Sugar  LACTOSE Provides ENERGY Adds SWEETNESS The enzyme LACTASE splits lactose into GLUCOSE and GALACTOSE

Sugar, sugar  Lactose intolerance Inability to digest lactose Cause: lack of lactase in intestines  No lactase Bacteria ferments lactose Produces acid and gas Causes: bloating, diarrhea, stomach cramps

Minerals & Vitamins  Minerals in milk… Ca, Mg, Co, I, Fe, Ni, Mo  Vitamins in milk… Riboflavin  Gives skim milk it’s greenish tint Thiamin, Vitamin A  Fortified = addition of nutrient Vitamin D

FAT  Influences milks… Flavor  More milk fat…tastes creamier Texture  More milk fat…thicker consistency Price  More milk fat…higher price $$

Fresh Drawn Milk…Moo!  Colloid One liquid (fat) suspended in another liquid (water) Will separate over time  Milk fat= liquid butterfat globules  Floats to top  Water based fluid

Store Milk  Milk sold in stores had been HOMOGENIZED Milk is forced through very small openings under high pressure. This reduces the size of the fat globules and keeps them evenly distributed throughout the milk.

Milk Fat Liquid Butterfat Globules  skim milk – 0% milk fat  1% - 1% milk fat  2% - 2% milk fat  whole milk – 3.25% milk fat