disaccharides + presence of sugars Flashcards
what are disaccharides composed of
two monosaccharide units
how are disaccharides bonded
alpha 1-4 glycosidic bond
condensation reaction
what is maltose made of
glucose + glucose
what is sucrose made of
glucose + fructose
what is lactose made of
glucose + galactose
role of maltose
germinating seeds
role of sucrose
transport in phloem of flowering plants
lactose role
in mammalian milk
what are reducing sugars
sugars that can donate an electron
principal of sugar testing test
reduces cu 2 ions in copper sulphate solution to cu 1 ions in red copper oxide
simple testing sugars method
sample is mixed with benedicts reagent and strongly heated
change from blue to brick red percipitate
what type of test is benedicts reagent
qualative
what would you use to get a quantative measure of sugars
biosensor
how to get a positive result with benedicts for a non reducing sugar ect sucrose
heating with hydrochloric acid
add alkaline
add benedicts reagent
heat as before
simple simple - what is the reducing sugars test from gcses
benedicts reagent test
