Chemical profile of a polysaccharide from Psidium guajava leaves and it’s in vivo antitussive activity

Comparative Study of the Structural Characteristics and Bioactivity of Polysaccharides Extracted from Aspidopterys obcordata Hemsl. Using Different Solvents

“…The characteristic peaks of polysaccharides were observed at frequencies around 3400, 2930, 1640, 1425, and 1030 cm −1 in the AOPs samples [35]. The strong and broad absorption band observed at approximately 3400 cm −1 was indicative of the presence of O-H stretching vibrations, which was attributed to both intramolecular and intermolecular interactions within the polysaccharide chains [36]. The weaker absorption peak at 2930 cm −1 was the stretching vibration of the sugar C-H [37].…”

A phenol phosphorescent microsensor of mesoporous molecularly imprinted polymers

“…Based on the electron-transfer mechanism between the target and QDs, QDs have been used as an optical microsensor of various analytes, including ions, small molecules and biological macromolecules. [7][8][9] Compared with the above-mentioned traditional uorescent QDs, ZnS QDs [10][11][12] are a type of environment-friendly QDs. ZnS QDs, wide-bandgap II-VI semiconductor materials, have the room-temperature phosphorescence (RTP) [13][14][15] character.…”

A fluorescent microsensor for the selective detection of bifenthrin

“…Based on an electron-transfer mechanism between a target and QDs, QDs have been used as optical sensors of various analytes including ions, small molecules and biological macromolecules. [8][9][10] In traditional agricultural industries, bifenthrin (BI), 11-13 a type of articially synthesized pyrethroid insecticide, is widely applied. Because of pesticide residues in soils, lakes and so on, it poses a threat to the natural environment.…”