[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.

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Freshman Organic Chemistry (CHEM 125)

This lecture begins a series describing the development of organic chemistry in chronological order, beginning with the father of modern chemistry, Lavoisier. The focus is to understand the logic of the development of modern theory, technique and nomenclature so as to use them more effectively. Chemistry begins before Lavoisier’s “Chemical Revolution,” with the practice of ancient technology and alchemy, and with discoveries like those of Scheele, the Swedish apothecary who discovered oxygen and prepared the first pure samples of organic acids. Lavoisier’s Traité Élémentaire de Chimie launched modern chemistry with its focus on facts, ideas, and words. Lavoisier weighed gases and measured heat with a calorimeter, as well as clarifying language and chemical thinking. His key concepts were conservation of mass for the elements and oxidation, a process in which reaction with oxygen could make a “radical” or “base” into an acid.

00:00 – Chapter 1. The Predecessors of Chemists: Alchemists
08:50 – Chapter 2. Scheele’s Acids and Elements
19:58 – Chapter 3. On Radicals, Lavoisier, and the Chemical Revolution
29:54 – Chapter 4. The Elementary Treatise of Chemistry: Facts, Ideas, and Words
36:51 – Chapter 5. New Nomenclature: Elements, Calories, and Radicals

Complete course materials are available at the Open Yale Courses website: https://open.yale.edu/courses

This course was recorded in Fall 2008.