cardohydrates flash cards

Frage	Antworten
monosaccharaides	glucose C6H12O6
test for reducing sugars	small amount of food sample (if not already liquid-grind with water) add = benedict reagent heat for 5 minuets orange-brick red = reducing sugar
disaccharides	glucose+glucose=maltose glucose+fructose=sucrose glucose+galactose=lactose
when 2 molecules join and a water molecule is removed......	......condensation reaction-glycosidic bond
when water is added to the disaccharide and bond are broken	hydrolysis
test for non-reducing sugars	if not liquid grind with water add dilute hydrochloric acid and heat for 5 minuets (acid will hydrolyse disaccharides) add sodium hydrogencarbonate to nutralise. add benedicts reagent and heat orange brown- brick red=reducing sugars
test for starch	add iodine to the sample black/blue= starch
starch brake down	physical brake down in the mouth-teeth(large SA) salivary amylase hydrolyse starch into maltose stomach acid denatures them SI-pancreatic amylase hydrolyse starch to maltose...and lining produces maltase-enzyme that hydrolyses maltose into alpha glucose
lactose intolerance	some people don't produce lactase so lactose is not hydrolysed. in LI microorganisms brake it down producing gas=bloating, nausea, diarrhea, cramps.

Zusammenfassung der Ressource

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