10-Di-_Complex+CHOs10

10-Di-_Complex+CHOs10 - Di Complex CBOH Glucose(reminder...

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FST10 ©GMS/GFR 2010 Di- & Complex CBOH G.M. Smith Food Science & Technology FST10 ©GMS/GFR 2010 Glucose (reminder) ! Monosaccharide ! Hexose ! Sweet ( !"#$ ó % , # = & ) ! Relation to other sugars ! fructose ! galactose ! galacturonic acid FST10 ©GMS/GFR 2010 Maltose ! Termed “malt sugar” ! Think of the malt shop, malted milk, malt- flavored cereal, candy, malting & brewing ! It is prepared by yeasts or enzymes acting upon starches. ! It is a disaccharide - 2 glucose moieties FST10 ©GMS/GFR 2010 Structure of Maltose FST10 ©GMS/GFR 2010 Lactose ! A disaccharide from mammalian milks ! Composed of glucose & galactose ! It is commercially prepared from whey ! 1/6 sweetness of sucrose ! Has low solubility (NB) FST10 ©GMS/GFR 2010 Dairy History ! Derivation of common words in dairying ! Latin lac = milk ! Led to lactation, lactose ! !"#" = gala = milk ! Led to galaxis to galaxy to galactose ! Is it an accident that our galaxy is the Milky Way? ! Hmmmm… reminds me of Monty Python’s “Galaxy song” (Eric Idle wrote & sings it, actually) ! See if it makes you feel as small and insignificant as Mrs. Brown… 2.17m
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FST10 ©GMS/GFR 2010 Milk – Consumption ! Only humans: ! Consume milk of other species ! Consume milk after weaning ! (Oh, all right, tell me about your kitty-cat) ! Northern Europeans are the primary group that: ! Consumes milk as adults ! Many other humans: ! become lactose intolerant ! decrease and lose production of LACTASE and cannot digest lactose. FST10 ©GMS/GFR 2010 LACTOSE INTOLERANCE ! At least half of the world’s adults cannot effectively digest lactose FST10 ©GMS/GFR 2010 LACTOSE INTOLERANCE ! McGee: “Ethnic chauvinism” ! We didn’t know about Lactose Intolerance until the 1950s-1960s ! UN, Peace Corps in SE Asia FST10 ©GMS/GFR 2010 LACTOSE INTOLERANCE — Getting around the problem… ! Use of lactase enymes ! Directly in processing ! Naturally with fermented dairy products ! Dietary supplements (“Lact-Aid” tablets to be taken with meals) ! cf. Bean-O for beans (there will “be no” gas)
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FST10 ©GMS/GFR 2010 For every PhD there is an equal & opposite PhD… ! Other things in dairy might cause digestion discomfort (such as proteins) ! Cheese is concentrated milk proteins and fat ! Lactose concentration begins at about that of milk ! Ripening reduces lactose concentration in cheese and yogurt. (later) 1.53 FST10 ©GMS/GFR 2010 Cheese Consumption & Lactose Intolerance Greece 27.3 France 24.0 Italy 22.9 Switzerland 20.6 Germany 20.2 Austria 19.5 Sweden 17.9 Cheese Consumption , 2003 kg/person/year Lactose Intolerance FST10 ©GMS/GFR 2010 Carbohydrate - Examples ! Sugars ! Starches FST10 ©GMS/GFR 2010 Carbohydrates - Starch !
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