Structural aspects of the exudate from the fruit of Chorisia speciosa St. Hil

A fucoarabinogalactan (CU-1), the main component of the gum exudate of the medicinal plant Croton urucurana, has been isolated by precipitation and subsequent dialysis and finally purified by ion-exchange chromatography. The estimated average molecular weight of CU-1 by gel permeation chromatography was ∼2.48 × 106 Da. CU-1 was found to contain 1.0% proteins and 93.7% total sugars, mainly fucose, arabinose, and galactose (molar ratio: 7.8, 8.1, 19.0), and minor quantities of mannose, xylose, glucose, and uronic acids (molar ratio: 2.2, 1.0, 0.3, 3.0). Among the uronic acids, glucuronic acid was identified and the presence of mannuronic acid could be also presumed. Methylation analysis of this polysaccharide revealed high proportions of 1,3-linked, 1,2,3-linked, and 1,2,3,6-linked galactose, 1-linked fucose, and 1-linked arabinose. This suggests that CU-1 is constituted by a principal skeleton of (1→3)-linked galactopyranose units, with some of these galactose units branched at the 2-position or at both the 2- and 6-positions, and with mainly terminal fucopyranosyl and arabinofuranosyl residues in the side chains. This is the first report on the polysaccharide constitution of a gum exudate from a Croton species.

Arabinose

Uronic acid

Exudate

Croton

10.1021/np010188f

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Citations (10)

Structural aspects of the exudate from the fruit of Chorisia speciosa St. Hil

International Journal of Biological Macromolecules (1999)

Eliana Beleski-Carneiro J.L.M.S Ganter Fany Reicher

Rhamnose

Arabinose

Exudate

Uronic acid

10.1016/s0141-8130(99)00086-0

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Citations (10)

Changes in exudate composition during the development of the ovary glands in Aptenia cordifolia

Zeitschrift für Pflanzenphysiologie (1980)

U. Kristen Gerd Liebezeit

Arabinose

Exudate

Rhamnose

10.1016/s0044-328x(80)80136-x

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Citations (6)

Analytical and structural features of the gum exudate from Combretum hartmannianum schweinf.

Carbohydrate Research (1976)

Douglas M. Anderson P. C. Bell

Rhamnose

Arabinose

Uronic acid

Exudate

10.1016/s0008-6215(00)83151-1

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Citations (14)

Optimization of extraction of polysaccharides from Suaeda salsa (L.) Pall. by ultrasonic: characterization, purification and antioxidant assessment

E3S Web of Conferences (2020)

Jianxin Fu Jiawei Shao Meng Wang Guixiang Zhang Yishan Fang

Under optimal extraction conditions, characterization and antioxidant activity of polysaccharides from the Suaeda salsa (L.) Pall . were investigated. This was the first report that described the composition of the polysaccharide form this plant. Obviously, the yield of 2.19% for extraction of polysaccharides was obtained as ethanol volume fraction of 65%, extraction time of 72 min, ultrasound assisted power of 438 W, and temperature of 85°C, respectively. The structure study was carried out with FT-IR and SEM, and the chemical contents of carbohydrates, proteins, uronic acids and total flavonoids were measured in this study. The crude polysaccharides were purified into two components including SGP-1-1 and SGP-2-1. Moreover, the chemical composition analysis according to HPLC showed that it was viscous polysaccharide, which mainly contained glucose, mannose, xylose, galacturonic acid, glucuronic acid, fucose, rhamnose, arabinose, galactose, respectively. Besides, it was proved that the optimum polysaccharides possessed higher significant potentials ( P <0.05) in scavenging ability against DPPH, ABTS + and hydroxyl radical.

Rhamnose

ABTS

Arabinose

Uronic acid

10.1051/e3sconf/202014501025

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Citations (5)

Structural characterization of a water-soluble polysaccharide from Angelica dahurica and its antitumor activity in H22 tumor-bearing mice

International Journal of Biological Macromolecules (2021)

Xiaodan Dong Yining Liu Yan Zhao An-jun Liu Haiyu Ji

Rhamnose

Arabinose