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复杂的含有阿拉比诺斯的多糖化合物来自菌Nostoc sp. : 提取,结构特征和抗氧化活性
Amal D Premarathna1, Vitalijs Rjabovs2, Sanjida Humayun1
1School of Natural Sciences and Health, Tallinn University, Narva mnt 29, 10120 Tallinn, Estonia.
International journal of biological macromolecules
|March 9, 2025
概括
淡水诺斯托克 (Nostoc) 种类. 聚糖 (NSP) 的特征,揭示独特的结构和显著的抗氧化活性,特别是从冷提取. 这些发现突出了NSP.
科学领域:
- 生物化学和聚合物科学:专注于从淡水蓝藻细菌获得的新型多糖体的结构阐明和特征.
背景情况:
- 淡水诺斯托克 (Nostoc) 种类. 多糖类 (NSP) 在其结构和生物特性方面仍未得到充分研究.
- 需要进行全面的表征,以了解它们的潜在应用.
研究的目的:
- 为了描述淡水Nostoc sp.的特征. 聚糖 (NSP) 使用先进的分析技术.
- 在不同的温度调节下评估NSP的提取效率和抗氧化活性.
- 为了研究单糖化合物的组成,糖化模式和NSP的分子量分布.
主要方法:
- 使用冷 (25°C) 和热 (95°C) 方案提取多糖.
- 通过1H和13C核磁共振,FTIR光谱,HP-SEC和HPAEC-PAD进行结构分析.
- 总含量,总糖和蛋白质含量的定量.
主要成果:
- 与冷提取 (27.6%) 相比,热提取产生了更高的NSP (34.9%).
- 非酸盐是非硫酸盐,主要由曼诺,阿拉比诺,葡萄糖酸和葡萄糖残留物组成,其中β-d-葡萄糖酸占主导地位.
- 来自内部流体分量的多糖体显示出更高的分子量 (高达480kDa);冷提取的NSP表现出最高的抗氧化活性.
结论:
- 诺斯托克公司Nostoc sp. 多糖类具有独特的结构特征和显著的抗氧化特性.
- 提取温度影响产量和潜在的多糖特性.
- 在护肤,食品,制药和生物技术行业中,NSP具有相当大的应用潜力.
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