ANS 1 Lecture Notes - Lecture 5: 2011 Nfl Season, Lactose Intolerance, Sexually Transmitted Infection
Document Summary
Humans have evolved -> gene for lactase persistence. Dominant = lactase persistent (europeans) -> digest lactose into later life. Recessive = cannot digest lactose in later life (african americans, asians) Has to do with if you domesticated these creatures. Largest agricultural state in amount of money, land. Milk - number 1 commodity in terms of money. 8-9% solids not fat -> proteins, minerals (calcium, phosphorus), lactose. 3-4% fat: most variable component of milk. 161 degrees f for 15 seconds -> common: uht (ultra high temperature pasteurization) -> no refrigeration, 280 degrees f for 2 seconds, milking machine -> feasible to milk cows. Lactose (sugar) - made from glucose and galactose: only found in milk o. Infants and newborns have the ability to break bond (of glucose and galactose) and digest it o. Lactose intolerance -> lactose gets into lower gut where it is broken down -> can"t break down the bond o. 40% concentrate - grains, makes milk production increase.
