Abstract

Chitosan is naturally occurring, biodegradable, non-toxic, non-allergenic biopolysaccharide derived from chitin which turns viscous upon dissolution in mildly acidic medium. Artificially changed chitosan consolidating hydroxyl chromone was set up by responding 6-Hydroxy-4-oxo-4H-chromone-3-carb-aldehyde with chitosan; it was found to have high specific and chelating proficiency towards transition metal ion at pH 1–8. Enhanced adsorption capacity and a strong affinity for Cu²⁺ was observed as compared to Cd²⁺, Ni²⁺ and Co²⁺ at pH 4–6. Chitosan-hydroxyl-chromone was chemically synthesized and characterized by spectroscopic techniques. Potentiometric strategies affirmed the request of selectivity which was free of the physical form of chitosan-hydroxyl-chromone subsidiary. ¹H NMR outcomes recommended a level of substitution (DS) extending from 32.72 to 98.21%. Antimicrobial and antioxidant activity of chitosan-hydroxyl-chromone within the series of synthesized compounds was evaluated. To improve the solubility of chitosan in water, we present a synthesis of chitosan-based chromone biopolymers and its applications in metal extractions.

中文翻译：

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色酮功能化壳聚糖聚合物的合成：其物理参数的应用/筛选

摘要

壳聚糖是天然存在的，可生物降解的，无毒，无过敏的生物多糖，来自几丁质，溶解于弱酸性介质中后变为粘性。通过将6-羟基-4-氧代-4氧代-4H-色酮-3-碳醛与壳聚糖反应，建立了人工改变的壳聚糖固结羟基色酮。它在pH 1-8时对过渡金属离子具有很高的特异性和螯合能力。与Cd 2 ⁺，Ni ²⁺和Co ²⁺相比，吸附能力增强，对Cu ^2+的亲和力强。在pH 4–6下。化学合成壳聚糖-羟基色酮并通过光谱技术表征。电位计策略证实了对选择性的要求，该要求不涉及壳聚糖-羟基色酮副产物的物理形式。¹ H NMR结果建议取代度（DS）从32.72％扩展到98.21％。评价了一系列合成化合物中壳聚糖-羟基色酮的抗菌和抗氧化活性。为了提高壳聚糖在水中的溶解度，我们提出了基于壳聚糖的色酮生物聚合物的合成及其在金属萃取中的应用。