从竹子中提取的用酸性深性溶剂提取的红素的化学结构和抗氧化活性的洞察力
Kaiqin Song1, Liping Yu1, Shoulu Yang2
1College of Forestry, Guizhou University, Guiyang 550025, China.
ACS omega
|October 7, 2024
概括
深度环氧化溶剂有效地从竹子中提取木质素,产生具有高热稳定性和抗氧化性质的材料. 这项研究强调了红素.
科学领域:
- 绿色化学和生物材料科学 绿色化学和生物材料科学
- 可持续的聚合物和素化学
背景情况:
- 灵是一种复杂的生物聚合物,是植物细胞壁的主要组成部分,也是有价值化学物质的潜在来源.
- 传统的木质素提取方法可能很苛刻,可能会降低木质素结构,影响其特性.
- 深度环氧化溶剂 (DES) 为生物质加工提供了一个可调节和环保的替代方案.
研究的目的:
- 通过使用各种深度浸泡溶剂 (DESs) 从竹子 (Phyllostachys edulis) 中提取红素.
- 描述提取的青素的结构和化学特性.
- 为了研究红素结构及其抗氧化活性和紫外线屏蔽特性之间的关系.
主要方法:
- 使用六种不同的有机酸作为键捐赠体 (HBDs) 的基于胆化的DES从竹子中提取红素.
- 使用福里埃变换红外光谱 (FT-IR),紫外可见光谱 (UV-vis),热重力测量分析 (TG) 和凝透色谱 (GPC) 来进行提取的木质素的结构和化学分析.
- 使用DPPH和ABTS试验评估抗氧化剂活性.
主要成果:
- DES处理有效地从竹子中去除了73.37-86.38%的红素.
- 提取的红素的化学结构因在DES中使用的HBD而异.
- 提取的红素表现出良好的紫外线光屏蔽,热稳定性和抗氧化活性.
- 用胆化物-p-toluenesulfonic 酸提取的红素显示出最高的抗氧化活性,与较高的酸含量和较低的分子量相关.
结论:
- 胆化物-有机酸DES对于提取具有理想性质的竹木木质素是有效的.
- 提取的红素具有显著的抗氧化和紫外线屏蔽能力.
- 这种红素显示出在各种工业中作为抗氧化剂和材料修饰剂的应用潜力.
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