- Join over 1.2 million students every month
- Accelerate your learning by 29%
- Unlimited access from just £6.99 per month
Quantitative test for starch and reducing sugar present in apple and pear
The first 200 words of this essay...
Biology TAS laboratory report - experiment 1 16th September, 2005
Name (class number): Julie Poon (25) & Fifian Chiang (4) class: F6C
Title: Quantitative test for starch and reducing sugar present in apple and pear
To find and compare the amount of starch and reducing sugars present in apple and pear.
In testing the amount of reducing sugars, the fruits had to be grounded into juice. Since reducing sugars are soluble, the sugar present in the fruit would dissolve into the juice. We can dilute and control the volume of fruit juice when doing the test, hence it is easier to compare the quantity of reducing sugar in the same amount of apple and pear. To test for reducing sugars, Benedict's solution is used. Benedict's solution contains blue copper (II) ions that reduce to red copper (I) oxide precipitates when added to reducing sugars. By comparing the amount of precipitate present at the end of the test, we can find out which fruit contains more reducing sugars.
The independent variable in this test is apple juice and pear juice, the dependent variable is the amount of red precipitate present at
Found what you're looking for?
- Start learning 29% faster today
- Over 150,000 essays available
- Just £6.99 a month
Not the one? We have 100's more
Aqueous Chemistry (view all)
- ANALYSIS OF ASPIRIN BY BACK TITRATION
- pH Lab Report - testing household liquids
- CalciumCarbonate + Hydrochloric Acid —> Calcium ...
- Determination of Magnesium Using an EDTA Titration
- Standardization of NaOH and Analysis of Unknown Acid Sample.
- Plan to investigate the factors that affect the rate of reac...
- Precipitation of Salts & Identification of Unknown Solut...
- Separation Of A Mixture of Salt, Sand and Iron Filings
- Decomposing Malachite. Purpose: To test the assumption that...
- How does temperature affect the dissolving rate of a sugar c...
""Simon. Politics and International Relations. University Student.
""Joanne Barratt. Nursing. University Student.