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Nutrients in Food Lab Report
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- Words:
- 542
- Submitted:
- Tue May 05 2009
- Mark submitted by Author:
... Nutrients in Food Lab Report (C1) Positive test - Tests that will determine if certain substances are present in many 'complex' foods: Starch: Iodine turns blue black when added Protein: Biuret test - If the foodstuff contains soluble protein, the reagent turn from light blue to purple Fat: Reagent forms a white cloudy precipitate Simple Sugars: Benedict's solution - when added, and once heated, Benedict's will turn dark orange-red Below is the data collected; if a certain substance such as starch, protein, fat or sugars are present, then in the table, it will be marked positive (+ve), and will have a remark, 'yes', next to it. If a substance is not present, then it will be marked negative (-ve) with a remark of 'no.' Though in some cases, there will be a trace of some substances, meaning there was a slight formation of the precipitate or the substance was slightly present, in extremely small amounts. This, on
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