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Organic Nutrients Lab Report

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Organic Nutrients Lab Report
Who Took Jerell’s iPod? Lab

Purpose:
Standardized Tests
The purpose of testing the organic nutrients (vegetable oil, glucose, starch, powdered egg white) with each of the different indicators (brown paper towel, benedicts, iodine, biurets) was to determine the color it would turn with positive traces of the nutrient. The purpose of testing just the Distilled H2O was to determine the color it would turn with negative traces.

Nutrient in the Different Foods
The purpose of testing each of the foods with the indicators was to determine whether they were positive or negative for any of the organic nutrients.

Who Did It?
We could determine who the culprit was by matching up each of the foods tested (for the nutrients) with all of the traces of nutrient found in the coworkers’ lunches.

Materials:

Equipment
Hot Plate
1000 mL Beaker
Test Tubes
Test Tube Rack
Droppers
Beaker Tongs

Indicators
Brown Paper Towel
Iodine
Benedicts
Biurets

Foods
Pretzel
Bread
Jelly
Yogurt
Beans
Cheese
Wrap
Unknown Ingredient

Hypothesis:

Worker in Break Room
Lunch/Snack
Glucose
Starch
Protein
Lipid
Jose
Bean burrito with cheese

✓
✓
✓
Ashley
Fat-free yogurt
✓

✓

Bruce
Toast with butter and jelly
✓
✓

✓
Kiara
Pretzel

✓

Procedure:
1.
2.
3.
4.
5.

Observations:

Preliminary Lab Results
Sample Tested
Type of Organic Nutrient
Indicator Used
Test Results for Sample (Include Color)
Test Results for Distilled H2O (Include Color)
Vegetable Oil
Fat/Lipid
Brown paper towel
Glossy finish on paper towel
No mark on paper towel
Glucose
Carbohydrate – monosaccharide
Benedicts
Positive – Orange
Negative – Blue
Starch
Carbohydrate – polysaccharide
Iodine
Positive – Black
Negative – Amber
Powdered Egg White
Protein
Biurets
Positive – Pinky-purple
Negative – Blue-ish

Part II Results
Food
Carbohydrate Tests
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