3 – To Investigate Quantitatively the Level of Reducing Sugars in a Range of Food Samples (LC 2027) (Leaving Cert Biology): Flashcards
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Practise the cards
12 cards from this deck
Quantitative test
Quantitative test
Measures exact amount/level/concentration of a substance
Advantage of quantitative over qualitative testing
Advantage of quantitative over qualitative testing
Exact measurements vs presence/absence only
Benedict's test purpose
Benedict's test purpose
Detects and measures reducing sugars in food samples
Alternative name for Benedict's test
Alternative name for Benedict's test
Fehling's test
Benedict's reagent initial colour
Benedict's reagent initial colour
Blue
Benedict's test heating time
Benedict's test heating time
Exactly 5 minutes in very hot water bath
Blue colour result means
Blue colour result means
0% reducing sugar (none present)
Green colour result means
Green colour result means
0.5 to 1% reducing sugar
Yellow colour result means
Yellow colour result means
1 to 1.5% reducing sugar
Orange colour result means
Orange colour result means
1.5 to 2% reducing sugar
Red/brick red colour result means
Red/brick red colour result means
Greater than 2% reducing sugar
Water control purpose
Water control purpose
Shows what happens with no reducing sugar; verifies test works