Related Experiment Video
Updated: Jan 22, 2026

08:06
Preparation of Synaptic Plasma Membrane and Postsynaptic Density Proteins Using a Discontinuous Sucrose Gradient
Published on: September 3, 2014
32.0K
Absorbable phenylpropenoyl sucroses from Polygala tenuifolia
Gaimei She1, Yinying Ba, Yang Liu
1School of Chinese Pharmacy, Beijing University of Chinese Medicine, Beijing 100102, China.
Molecules (Basel, Switzerland)
|July 1, 2011
Summary
Three compounds from Polygala tenuifolia, sibiricose A5, A6, and 3
Area of Science:
- Phytochemistry
- Pharmacology
- Neuroscience
Background:
- Polygala tenuifolia is a traditional medicinal herb.
- Antidepressant properties of herbal extracts are of significant interest.
- Understanding the active compounds is crucial for therapeutic development.
Purpose of the Study:
- To isolate and identify phenylpropenoyl sucroses from Polygala tenuifolia.
- To investigate the antidepressant-like effects of these compounds.
- To explore their potential as therapeutic agents for depression.
Main Methods:
- Extraction of Polygala tenuifolia using 30% ethanol.
- Isolation of three phenylpropenoyl sucroses: sibiricose A5, A6, and 3',6-disinapoyl sucrose.
- High-Performance Liquid Chromatography (HPLC) analysis for serum absorption.
Main Results:
- Sibiricose A5, A6, and 3',6-disinapoyl sucrose were successfully isolated.
- These compounds demonstrated antidepressant-like activity in preliminary studies.
- HPLC confirmed the absorption of these phenylpropenoyl sucroses into the bloodstream.
Conclusions:
- The isolated phenylpropenoyl sucroses possess antidepressant-like potential.
- Their presence in serum suggests systemic bioavailability.
- These compounds may serve as novel therapeutic agents for managing depression.
Related Concept Videos
Measuring Reaction Rates
28.7K
Polarimetry finds application in chemical kinetics to measure the concentration and reaction kinetics of optically active substances during a chemical reaction. Optically active substances have the capability of rotating the plane of polarization of linearly polarized light passing through them—a feature called optical rotation. Optical activity is attributed to the molecular structure of substances. Normal monochromatic light is unpolarized and possesses oscillations of the electrical...
28.7K
Carbohydrate Digestion
121.9K
Carbohydrate digestion and metabolism break down simple and complex carbohydrates from food into saccharides (i.e., sugars) for the body to use as energy. Carbohydrate digestion starts in the mouth during mastication, or chewing. The masticated carbohydrates remain intact in the stomach. Digestion resumes in the duodenum of the small intestine, where pancreatic alpha-amylase and brush border enzymes of the microvilli convert complex carbohydrates to monosaccharides. Finally, the monosaccharides...
121.9K
Formula Mass and Mole Concepts of Compounds
80.6K
Formula Mass of Covalent Compounds
80.6K
General Properties of Solutions
35.5K
Many common substances around us exist as a solution, such as ocean water, air, and gasoline. All solutions are mixtures of substances that are composed of varying amounts of two or more types of atoms or molecules. A mixture with a non-uniform composition is a heterogeneous mixture, whereas a mixture with a uniform composition is a homogeneous mixture. The components that make the homogeneous mixture are evenly spread out and thoroughly mixed.
35.5K
Electrolyte and Nonelectrolyte Solutions
71.3K
Substances that undergo either a physical or a chemical change in solution to yield ions that can conduct electricity are called electrolytes. If a substance yields ions in solution, that is, if the compound undergoes 100% dissociation, then the substance is a strong electrolyte. Complete dissociation is indicated by a single forward arrow. For example, water-soluble ionic compounds like sodium chloride dissociate into sodium cations and chloride anions in aqueous solution.
71.3K
Dietary Connections
61.5K
In biological systems, most metabolic pathways are interconnected. The cellular respiration processes that convert glucose to ATP—such as glycolysis, pyruvate oxidation, and the citric acid cycle—tie into those that break down other organic compounds. As a result, various foods—from apples to cheese to guacamole—end up as ATP. In addition to carbohydrates, food also contains proteins and lipids—such as cholesterol and fats. All of these organic compounds are used...
61.5K

