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Extraction of anthocyanins from red cabbage 20/10/22
In the last lesson we extracted anthocyanins from red cabbage in the laboratory.
We used the following tools:
-red cabbage
-Spray with distilled water
250ml beaker with turning wand -500ml flask
-funnel
-filter paper
-Tube holder with 3 tubes each containing oil, Schweppes and beef broth -pipette
1)We took the red cabbage, cut it then put it in the beaker, added some water and heated it for 20 minutes.
2)Let it cool and then pour it into the flask, and filter it through the filter paper and the funnel
3)Pour the liquid into the 100 ml Becker
4)We calculate the pH of the oil, vinegar, Schweppes and beef broth with the back sun maps: OIL-> 5 6
VINEGAR-> 2
SCHWEPPES-> 3
BROTH M. -> 8/9
5)Add the liquid obtained from the red cabbage in the OIL-> test tube does not join, keeps same color
VINEGAR-> red
SCHWEPPES-> pink
BROTH M.-> green
Conclusion,
with this experiment we have seen that the oil is NEUTRAL, the vinegar and the Schweppes are ACIDS and the broth is a BASIC substance.

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Gianfranco Giordano

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EXPERIMENT REPORT EXTRACTION OF ANTHOCYANINS FROM RED CABBAGE INTRODUCTION

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EXPERIMENT REPORT EXTRACTION OF ANTHOCYANINS FROM RED CABBAGE INTRODUCTION

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An indicator is a substance that has the possibility to change colour in relation to the acidity or basicity of the substances with which it comes into contact.

TOOLS

Red cabbage

Distilled water sprayer

Becher from L50 HL

Wand to turn

500 HL beuta

Small funnels

Pipette

Filter paper

Test tube holder with 3 test tubes inside it 3 different elements

1. Beef broth.

2. Orange juices

3. Schweppes

Procedure

1. Cut a few slices of the red cabbage and place inside the beaker and put the distilled water inside.

2. Place in the stove to be boiled for about 20 min

3. Pour the solution obtained by filtering into a flax

4. Put 3 litmus papers in front of the test tubes

5. Take the liquid from the tubes with a pipette and put on top of the litmus paper RESULTS

After putting the liquid on top of the litmus paper we can see the following PH of the elements

The broth represents PH5 therefore a not so high acidity

Orange juice represents PH3 a higher acidity than broth

The schweppes represents a PH4 an acidity less acidic than orange juice but more acidic than broth

Finally we tried to put together the vinegar the colour and turned red so it represents a strong acidity

Zheng Elena

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Daniele D'Arrigo

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flavio rossi - Relazione ESPERIMENTO : ESTRAZIONE DI ANTOCIANINE DA CAVOLO ROSSO ( INDICATORE NATURALE DI PH) E SAGGIO DI 3 CAMPIONI

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LINDA BERNARDINI

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Create a new document and edit with others at the same time -- from your computer, phone or tablet. Get stuff done with or without an internet connection. Use Docs to edit Word files. Free from Google.

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ADRIAS JHUSTINE

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LE ANTOCIANINE E LE SUE FUNZIONI ANTITUMORALI

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LE ANTOCIANINE E LE SUE FUNZIONI ANTITUMORALI

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ROSCANI GIORGIA