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Red Algae

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Red algae, also known as rhodophytes, are primarily found in marine environments, though some species inhabit freshwater and terrestrial ecosystems. These organisms exist in both unicellular and multicellular forms, with some multicellular varieties reaching macroscopic sizes.As phototrophic organisms, red algae contain chlorophyll a; however, their chloroplasts lack chlorophyll b. Instead, they possess phycobiliproteins, which serve as major light-harvesting pigments, similar to those found in...

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Updated: Jul 4, 2026

An In Vitro Dissolution Determination of Multi-Index Components in Tibetan Medicine Rhodiola Granules

An In Vitro Dissolution Determination of Multi-Index Components in Tibetan Medicine Rhodiola Granules

Published on: November 4, 2022

[Phenolic components from Rhodiola dumulosa].

Qing Liu¹, Zhen-Ling Liu, Xuan Tian

¹Department of Chemical Engineering and Pharmacy, College of Material Science and Engineering, Huaqiao University, Quanzhou 362011, China.

Zhongguo Zhong Yao Za Zhi = Zhongguo Zhongyao Zazhi = China Journal of Chinese Materia Medica

|June 7, 2008

Summary

This summary is machine-generated.

Eight phenolic compounds were identified from Rhodiola dumulosa roots. Gallic acid and four other compounds were isolated for the first time from this plant source.

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Field Collection and Laboratory Routine Identification of Rhodiola crenulata

Field Collection and Laboratory Routine Identification of Rhodiola crenulata

Published on: October 27, 2023

Area of Science:

Phytochemistry
Natural Products Chemistry
Pharmacognosy

Context:

Rhodiola species are recognized for their medicinal properties.
Phytochemical investigation of Rhodiola dumulosa roots is crucial for understanding its therapeutic potential.
The methanol extract of Rhodiola dumulosa root was analyzed for its chemical constituents.

Purpose:

To isolate and identify phenolic compounds from the root of Rhodiola dumulosa.
To characterize the chemical structures of the isolated compounds using spectroscopic and chemical methods.
To report novel compounds isolated from Rhodiola dumulosa.

Summary:

Eight phenolic compounds were successfully isolated from the methanol extract of Rhodiola dumulosa root.
The identified compounds include kaemperol, Quercetin, Gallic acid, (+) -Isolariciresinol-3alpha-O-beta-D-glucopyranoside, (-)-Isolariciresinol-3alpha-O-beta-D-glucopyranoside, kaemperol-3-O-beta-D-glucopyranoside-7-alpha-O-L-rhamnoside, and rutin.
Compounds 3-7 (Gallic acid, and the four lignans and glycosides) represent the first isolation of these specific phenolics from Rhodiola dumulosa.

Impact:

This study expands the known phytochemical profile of Rhodiola dumulosa.
The identification of novel compounds provides a basis for further pharmacological research.
Contributes to the chemotaxonomic understanding of the Rhodiola genus.