scholarly journals Partially methylated galactans containing different proportions of 3-O-methyl-galactose from Pleurotus citrinopileatus

2018 ◽  
Vol 458-459 ◽  
pp. 29-34 ◽  
Author(s):  
Dayane R. Brito ◽  
Elaine R. Carbonero ◽  
Sthefany R.F. Viana ◽  
Estefânia V. Silva ◽  
Andrea Caroline Ruthes ◽  
...  
2020 ◽  
Author(s):  
Ian Sims ◽  
CJ Pollock ◽  
R Horgan

Individual fructan tri-, tetra- and pentasaccharide isomers in neutral, water-soluble extracts from Lolium temulentum were purified and the linkages present in these isomeric oligosaccharides were analysed by combined GC-mass spectrometry of partially methylated alditol acetates. 1-Kestose and neokestose were the most abundant trisaccharides with 6-kestose present in much lower amounts. Analysis of isomers of DP 4 and 5 showed that multiple linkage types were present with structures based on all three trisaccharides. Oligosaccharides based on neokestose but with 2,6 linkages between adjacent fructose residues have not been previously detected in higher plants. © 1992.


2019 ◽  
Vol 20 (15) ◽  
pp. 1309-1320 ◽  
Author(s):  
Ahmed M. Younis ◽  
Marwa M. Abdel-Aziz ◽  
Mohamed Yosri

Background:: Mushrooms are deemed as a special delicacy in many countries. They are considered an important cuisine due to their bioactive ingredients and possible health benefits. Methods: Herein, we measured selected biological properties of methanol extracts of Pleurotus citrinopileatus and Boletus edulis fruiting bodies including; in vitro antimicrobial activity, anti-α- glucosidase activity, antioxidant activity, anti-lipase activity and cytotoxic activity against different cancer cells and normal cells. Results: B. edulis methanol extracts showed high antimicrobial and anti-α-glucosidase activity. In contrast, P. citrinopileatus methanol extracts showed superior antioxidant activity indicated by (1,1- diphenyl-2-picrylhydrazyl) DPPH radical scavenging with half maximal inhibitory concentration of IC50 37.4 µg/ml, anti-lipase activities with IC50 65.2 µg/ml and high cytotoxicity activity against HepG2 and HeLa cell lines with IC50 22.8 and 36.7 µg/ml, respectively. Flow cytometric analysis of the cell cycle was used to show apoptotic effects of methanol extracts against HepG2 and HeLa cells. Conclusion: P. citrinopileatus and B. edulis methanolic extracts appear to contain biologically active compounds that might be used to treat some common human diseases.


1978 ◽  
Vol 62 (2) ◽  
pp. 363-367 ◽  
Author(s):  
Haralambos Parolis ◽  
Donald McGarvie

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