15075-09-9Relevant articles and documents
TWO RHAMNETIN DIGALACTOSIDES AND AN OLEANOLIC ACID DIGALACTOSIDE FROM THE FLOWERS OF CASSIA LAEVIGATA
Singh, J.
, p. 1832 - 1833 (1982)
From the flowers of Cassia laevigata, two new rhamnetin glycosides, the 3-galactosyl(1->4)galactopyranoside and the related 3-galactosyl(1->6)galactopyranoside, and oleanolic acid 3-galactosyl(1->4)galactopyranoside have been isolated.These three glycosides have not been isolated earlier from any plant source.The known compounds quercetin, docosyl alcohol, carnaubyl alcohol, ceryl alcohol and octacosanol have also been obtained.Key Word Index - Cassia laevigata; Leguminosae; flowers; rhamnetin 3-galactosyl(1->4)galactoside; rhamnetin 3-galactosyl(1->6)galactoside; oleanolic acid 3-galactosyl(1->4)galactoside.
Simons,Struck
, p. 1947 (1934)
A novel low-molecular-mass pumpkin polysaccharide: Structural characterization, antioxidant activity, and hypoglycemic potential
Huang, Linlin,Li, Fei,Li, Quanhong,Liang, Li,Wei, Yunlu,Yu, Guoyong
, (2020/10/02)
The novel natural low-molecular-mass polysaccharide (SLWPP-3) from pumpkin (Cucurbia moschata) was separated from the waste supernatant after macromolecular polysaccharide production and purified using a DEAE cellulose-52 column and gel-filtration chromatography. Chemical and instrumental studies revealed that SLWPP-3 with a molecular mass of 3.5 kDa was composed of rhamnose, glucose, arabinose, galactose and uronic acid with a weight ratio of 1: 1: 4: 6: 15, and primarily contained →3,6)-β-D-Galp-(1→, →4)-α-GalpA-(1→(OMe), →4)-α-GalpA-(1→, →2,4)-α-D-Rhap-(1→, →3)-β-D-Galp-(1→, →4)-α-D-Glcp, and →4)-β-D-Galp residues in the backbone. The branch chain passes were connected to the main chain through the O-4 atom of glucose and O-3 atom of arabinose. Physiologically, the ability of SLWPP-3 to inhibit carbohydrate-digesting enzymes and DPPH and ABTS radicals, as well as protect pancreatic β cells from oxidative damage by decreasing MDA levels and increasing SOD activities, was confirmed. The findings elucidated the structural types of pumpkin polysaccharides and revealed a potential adjuvant natural product with hypoglycemic effects.
Isolation, purification, characterization and antioxidant activity of polysaccharides from the stem barks of Acanthopanax leucorrhizus
Hu, Hao-Bin,Liang, Hai-Peng,Li, Hai-Ming,Yuan, Run-Nan,Sun, Jiao,Zhang, La-La,Han, Ming-Hu,Wu, Yun
, p. 359 - 367 (2018/05/29)
A novel water-soluble polysaccharide (named ALP-1) was successfully isolated from the stem barks of Acanthopanax leucorrhizus by hot-water extraction, and further purified by Cellulose DEAE-52 and Sephadex G-100 chromatography. The structure of ALP-1 was characterized by HPLC, HPGPC, partial acid hydrolysis, periodate oxidation, Smith degradation, methylation, together with UV, IR and NMR spectral analysis. The antioxidant activities also were evaluated in vitro. Structural analysis revealed that ALP-1 was a homogeneous galactan with the average molecular weight of 169 kDa, composed of galactose, glucose, mannose and arabinose in a molar ratio of 6.1:2.1:1.1:1.0, owning a backbone structure of 1,6-linked α-D-Galp residues with some branches of α-D-Manp-(1 → 3)-α-L-Araf residues at O-3 and α-D-Galp residues at O-4 of 1,6-linked α-D-Galp. Antioxidant assay showed that ALP-1 exhibited strong DPPH[rad] and HO[rad] scavenging activities, as well as ferric-reducing antioxidant power. These results provide a scientific basis for the further use of polysaccharides from A. leucorrhizus.
Structural characterization and protective effect against murine sepsis of fucogalactans from Agaricus bisporus and Lactarius rufus
Ruthes, Andrea C.,Rattmann, Yanna D.,Carbonero, Elaine R.,Gorin, Philip A.J.,Iacomini, Marcello
experimental part, p. 1620 - 1627 (2012/04/11)
Fucogalactans from edible Agaricus bisporus (RFP-Ab) and wild Lactarius rufus (RFP-Lr) mushrooms were obtained on aqueous extraction followed by purification. RFP-Ab had Mw 43.8 × 104 g mol -1 and RFP-Lr Mw 1.4
