[Latin Name] Rhodiola Rosea

[Plant Source] China

[Specifications] Salidrosides:1%-5%

Rosavin:3% HPLC

[Appearance] Brown fine powder

[Plant Part Used] Root

[Particle size] 80 Mesh

[Loss on drying] ≤5.0%

[Heavy Metal] ≤10PPM

[Storage] Store in cool & dry area, keep away from the direct light and heat.

[Package] Packed in paper-drums and two plastic-bags inside.

[What is Rhodiola Rosea]

Rhodiola Rosea (also known as Arctic root or golden root) is a member of the family Crassulaceae, a family of plants native to the arctic regions of Eastern Siberia. Rhodiola rosea is widely distributed  in Arctic and mountainous regions throughout Europe and Asia. It grows at altitudes of 11,000 to 18,000 feet above sea level.

There are numerous animal and test tube studies showing that rhodiola has both a stimulating and a sedating effect on the central nervous system; enhance physical endurance; improves thyroid, thymus, and adrenal function; protects the nervous system, heart and liver; and has antioxidant and anticancer properties.

[Function]

1 Enhancing immunity and delaying aging;

2 Resisting radiation and tumor;

3 Regulating nervous system and metabolism, effectively limiting melancholy feeling and mood, and promoting mental status;

4 Protecting cardiovascular, dilating coronary artery,preventing coronary arteriosclerosis and arrhythmia.

In this video I will show you how to make a red cabbage pH indicator. This is a very interesting experiment that is very simple.

What you will need:
Red cabbage
Distilled water (Reverse osmosis will work too)
A stove or heat source

First cut the cabbage leaves into small pieces and add them to distilled water and bring to a boil, let it boil for 2 minutes and then turn off heating and let cool slowly.

Now you have your indicator and some cabbage pieces. Use a strainer or coffee filter to remove particles.

The deep purple solution is your indicator you can refrigerate it for short term use or add 15% volume of alcohol (im using 91% isopropanol)

You can test the indicator by adding acids and bases.
In an acid environment it turns red (NaHSO4, HCl, Citic acid etc…)
In a neutral environment its purple (Distiled H2O)
In mild bases it is blue (Sodium Acetate)
In weak bases it is blue green (NaHCO3)
I medium strong bases it is dark green (Na2CO3)
In very strong bases it is yellow (NaOH)

The active chemical in the indicator is Anthocyanins. They change color in acid and basic environments. Red cabbage is high in Anthocyanins but other plants like raspberrys, grapes, and purple corn have similar chemicals that change color in pH.

Thanks for watching!

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