Functional and physicochemical characterization of marine exopolysaccharide derived from the novel bacterium Algoriphagus sp. K5R and its application towards biomineralization of gold and silver

IF 2.9 4区 化学 Q2 POLYMER SCIENCE
Tixit Sagpariya, Nandita Srivastava, Sumeeta Kumari, Anil Kumar Pinnaka, Anirban Roy Choudhury
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Abstract

The widespread use of synthetic polymers in various industries has raised worldwide concerns regarding their ecological impact and effects on human health. As a result, biopolymers have emerged as a promising alternative. Among them, exopolysaccharides (EPSs) produced by microbes from terrestrial niches have been extensively studied. However, recent reports have indicated that microbes from marine environments can also produce unique EPSs that could serve as sustainable substitutes to meet the escalating demand for biopolymers. The present study, for the first time, reports EPS production from novel marine bacterium Algoriphagus sp. K5R for sustainable application development. Interestingly, physicochemical analyses suggest that EPS K5R is a high molecular weight (1190.63 kDa) heteropolysaccharide composed of galacturonic acid, glucose and mannose. To evaluate EPS production, growth and fermentation kinetics were performed, which revealed that it was a primary metabolite having a maximum production of 4.79 ± 0.57 g L−1 with 2% (w/v) glucose. Moreover, EPS K5R exhibits exceptional functional properties, namely high water‐holding capacity (720% ± 80.29%) and oil‐holding capacity (493.33% ± 49.74% for coconut oil and 533.32% ± 17.47% for olive oil), and non‐Newtonian pseudo‐plastic behavior which render it a promising candidate for application in the cosmetics and food industries. In fact, its anti‐oxidant capabilities make it an ideal biological reducing agent for metal nanoparticle synthesis. Overall, this study highlights the potential of marine EPSs for a diverse array of industrial applications. © 2024 Society of Chemical Industry.
从新型细菌 Algoriphagus sp. K5R 提取的海洋外多糖的功能和理化特性及其在金银生物矿化中的应用
合成聚合物在各行各业的广泛使用引起了全世界对其生态影响和人类健康的关注。因此,生物聚合物成为一种有前途的替代品。其中,由陆生环境中的微生物产生的外多糖(EPSs)已被广泛研究。然而,最近的报告表明,海洋环境中的微生物也能产生独特的 EPSs,可作为可持续的替代品来满足对生物聚合物不断增长的需求。本研究首次报道了新型海洋细菌 Algoriphagus sp. K5R 为可持续应用开发而生产的发泡聚苯乙烯。有趣的是,理化分析表明,EPS K5R 是一种由半乳糖醛酸、葡萄糖和甘露糖组成的高分子量(1190.63 kDa)杂多糖。为评估 EPS 产量,进行了生长和发酵动力学研究,结果表明 EPS 是一种初级代谢产物,在葡萄糖含量为 2% (w/v) 的情况下,最大产量为 4.79 ± 0.57 g L-1。此外,EPS K5R 还具有优异的功能特性,即较高的保水能力(720% ± 80.29%)和保油能力(椰子油为 493.33% ± 49.74%,橄榄油为 533.32% ± 17.47%),以及非牛顿假塑性行为,因此有望应用于化妆品和食品行业。事实上,橄榄油的抗氧化能力使其成为合成金属纳米粒子的理想生物还原剂。总之,这项研究强调了海洋 EPS 在各种工业应用中的潜力。© 2024 化学工业协会。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Polymer International
Polymer International 化学-高分子科学
CiteScore
7.10
自引率
3.10%
发文量
135
审稿时长
4.3 months
期刊介绍: Polymer International (PI) publishes the most significant advances in macromolecular science and technology. PI especially welcomes research papers that address applications that fall within the broad headings Energy and Electronics, Biomedical Studies, and Water, Environment and Sustainability. The Journal’s editors have identified these as the major challenges facing polymer scientists worldwide. The Journal also publishes invited Review, Mini-review and Perspective papers that address these challenges and others that may be of growing or future relevance to polymer scientists and engineers.
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