Preparation and performance of chitosan/cyclodextrin-g-glutamic acid thermosensitive hydrogel

Contribution of chitosan–caffeic acid graft against Staphylococcus aureus on oxidative stress and cell membrane

“…As illustrated in Figure 1a, the growth trend of S. aureus in CK group was the “S” of typical growth trend. Zhou, Tang, et al (2022) also got a similar phenomenon from the study on epicatechin gallate and CS against S. aureus . The value of OD 600nm in CS‐g‐CA group displayed a lower bacterial absorbance than CK group, especially the CS‐g‐CA group in 2MIC, indicating that the CS‐g‐CA had a significant inhibitory effect on the growth of S. aureus .…”

Optimization, Characterization, Molecular Docking, and In Vitro Release of BBH/Lysine‐β‐cyclodextrin Inclusion Complex

“…The characteristic absorption peak of an α-pyran ring of β-CD was shown at 945 cm À 1 , the peak at 1155 cm À 1 was principally attributed to symmetrical stretching of CÀ OÀ C bridge, and the peaks at 1080 cm À 1 and 1030 cm À 1 are caused by CÀ OÀ C bone vibration stretched by CÀ O. [18,35] The FTIR spectrum of the Lys, the absorption peak at 2933 cm À 1 is caused by the stretching vibration of À CH, the absorption peak at 1630 cm À 1 is the symmetric deformation vibration peak of À NH 2 group, the absorption peak is caused by the NÀ H bending vibration of the amino group is the peak at 1583 cm À 1 , and the peaks at 1273 cm À 1 and 1095 cm À 1 verify the existence of CÀ OÀ C. [36] In the spectrogram of Lys-β-CD, there are deformation vibration absorption peaks (1630 cm À 1 and 1583 cm À 1 ) of the primary amino group in Lys. The presence of symmetric tensile absorption peaks of the CÀ OÀ C bridge in β-CD (1155 cm À 1 ) and CÀ OÀ C bone vibration peaks (1080 cm À 1 and 1030 cm À 1 ) proved the successful synthesis of Lys-β-CD.…”

“…mono-(6-L-Lysine-6-deoxy)-β-CD (Lys-β-CD) was synthesized according to the method reported by Zhou et al [18] In short, β-CD (20 g) and NaOH (11.2 g) were joined in deionized water, Ptoluenesulfonyl chloride (TsCl,5.04 g) was slowly added at 0-5 °C, and continued to react for 5 h. After the reaction, the unreacted TsCl was removed by filtration. The filtrate was adjusted to a pH of 6-7 with 2 mol/L HCl.…”

“…Zhou et al synthesized cyclodextrin grafted glutamic acid to prepare chitosan/cyclodextrin derivatives thermosensitive hydrogel (CS/CD-g-Glu) to improve the properties of chitosanbased hydrogels. [18] Hong et al designed and synthesized three novel amino-acid-modified β-cyclodextrins (alanine, phenylalanine, and proline), which were used as supramolecular hosts and promoters for the Pd-catalyzed Heck reactions of aryl iodides. [19] L-lysine (Lys) is a water-soluble alkaline essential amino acid.…”

Synthesis of a Water‐Soluble Pd‐Based Catalyst with a Thymine‐Modified β‐Cyclodextrin Ligand for Suzuki Coupling Reactions

“…Mono-(6-p-Toluenesulfonyl)-β-CD (mono-(6-OTS)-β-CD) was synthesized according to the reference. [31] General procedure of thyminemodified-β-CDs synthesis: a mixture of mono-(6-OTS)-β-CD (1.28 g, 1 mmol) and thymine (1.26 g, 10 mmol) in the mixed solution of 24 mL H 2 O and 16 mL triethylamine was refluxed and stirred at 100 °C for 18 h under nitrogen atmosphere. After the reaction, the liquid mixture was evaporated to 2 mL under reduced pressure.…”