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从杏仁中获得纤维素纤维,通过将亚临界水提取和漂白与过氧化相结合

Irene Gil-Guillén¹, Pedro A V Freitas¹, Chelo González-Martínez¹

¹Institute of Food Engineering-FoodUPV, Universitat Politècnica de València, 46022 Valencia, Spain.

Molecules (Basel, Switzerland)

|July 27, 2024

概括

亚临界水提取 (SWE) 提供了一种绿色方法,可以从杏仁 (AS) 中净化纤维素. 这种生物质预处理提高了纤维素含量和结晶性,减少了工业应用的化学品需求.

科学领域:

生物质价值化生物质价值化
绿色化学是一种绿色化学.
纤维素净化过程中的纤维素净化

背景情况:

杏仁 (AS) 是一种富含纤维素的农业副产品.
有效利用AS生物质需要更绿色的纤维素分离方法.
目前的方法往往涉及强化学品和广泛的加工.

研究的目的:

研究亚临界水提取 (SWE) 作为杏仁纤维素的绿色预处理方法.
为了评估SWE的有效性,随后进行过氧化或化漂白.
为了确定SWE温度对纤维素产量和质量的影响.

主要方法:

杏仁经历了在160°C和180°C的低临界水提取 (SWE).
提取残留物用过氧化 (8%,pH 12) 或化进行了漂白.
分析了纤维素含量和结晶度指数.

主要成果:

较高的SWE温度 (180°C) 改善了半纤维素的去除和脱.
过氧化漂白产生的纤维素含量为71-78%,结晶度为50-62%.
化漂白进一步增强了纤维素的净化和结晶性.

结论:

SWE是一种有前途的绿色技术,用于预处理像AS.AS.这样的纤维素生物质.
SWE提高了后续漂白过程的效率,减少了化学品的消耗.
来自AS的净化纤维素适合各种应用.

关键词:

杏仁的外是一个杏仁的外.漂白漂白是一种漂白.纤维素纤维素的使用方法过氧化是一种过氧化.亚临界抽取水的提取方法农业食品废物的回收利用.

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