Characterization, solubility and biological activity of amphihilic biopolymeric Schiff bases synthesized using chitosans

被引：48
作者：
Barbosa, Hellen F. G. [1 ]
Attjioui, Maha [2 ,3 ]
Leitao, Andrei [1 ]
Moerschbacher, Bruno M. [2 ]
Cavalheiro, Eder T. G. [1 ]
机构：
[1] Univ Sao Paulo, Inst Quim Sao Carlos, Av Trabalhador Sao Carlense 400, BR-13566590 Sao Carlos, SP, Brazil
[2] Westfalische Wilhelms Univ Munster, Inst Plant Biol & Biotechnol IBBP, Schlosspl 8, D-48143 Munster, Germany
[3] Inst Technol Tralee, Shannon Appl Biotechnol Ctr, South Campus, Tralee, Co Kerry, Ireland
来源：
CARBOHYDRATE POLYMERS | 2019年 / 220卷
基金：
巴西圣保罗研究基金会;
关键词：
Chitosan; Schiff bases; Salicylaldehyde; Glycidol; Antimicrobial; Antitumor activity; ANTIFUNGAL ACTIVITY; MOLECULAR-WEIGHT; COMPLEXES; DERIVATIVES; NI(II); CU(II); ANTIBACTERIAL; CARRIER; CHITIN;
D O I：
10.1016/j.carbpol.2019.05.037
中图分类号：
O69 [应用化学];
学科分类号：
081704 ;
摘要：
Chitosans are versatile biopolymers recognized for their wide range of biological activities. However, the low solubility in neutral and basic solutions restricts the applications. Thus amphiphilic biopolymeric Schiff bases from chitosans, salicylaldehyde and glycidol were successfully synthesized and characterized using H-1-NMR, UV/Vis, FTIR, TG/DTG-DTA and tested for their antimicrobial activities against plant pathogenic microorganisms and human breast cancer cells (MCF-7). Overall, functionalization of chitosans with salicylaldehyde and glycidol with different molecular weight ((M) over bar (w)) was performed to improve the biological actives of chitosans. Thus the biological activity of the new amphiphilic compounds prepared in this work were evaluated regarding microorganisms with agricultural relevance and tumor cells. The biopolymeric amphiphilic Schiff bases showed significant effects against Pseudomonas syringae (IC50 < 5 mu g mL(-1)) compared to the natural chitosans with medium (M) over bar (w) (CHM 223 kDa) and low (M) over barw (CHL 64 kDa), which had IC50 values of 42 and 37 mu g mL-1, respectively. In addition, they improved antitumor activity against tumor cells compared to the natural chitosan.
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页码：1 / 11
页数：11
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