天然深共晶溶剂直接提取蜗牛壳壳聚糖的研究

Q2 Chemistry

Current Chemistry Letters Pub Date : 2023-01-01 DOI:10.5267/j.ccl.2023.1.001

Melody Kimi, Mohd Hazwan Hamdi

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引用次数: 1

摘要

从自然资源中提取壳聚糖生物聚合物的过程通常使用有害化学物质，加工时间长。本研究为从蜗牛壳中提取壳聚糖提供了一种可持续的直接提取方法。在以前的尝试中，用醋酸原素在堇菜提取物中提取壳聚糖是成功的。然而，由于反应缓慢，使得在萃取物中加入了氢键受体溶液。氯化胆碱是一种很好的氢键受体，与乙酰胆碱混合为氢键给体，形成直接提取壳聚糖的天然深度共晶溶剂。该方法制备的壳聚糖脱乙酰度为91%，分子量为481 kDa，呈纤维状。从氯化胆碱和乙酰胆碱组成的NADES中直接提取壳聚糖，得到了与商品壳聚糖性能相当的壳聚糖。

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Direct extraction of chitosan from snail shells by natural deep eutectic solvent

The processes involved to extract chitosan biopolymers from natural resources often employ hazardous chemicals and long processing time. This work provides a sustainable direct extraction method of chitosan from snail shells. Previous attempts using acetogenin in graviola extracts succeeded in the extraction of chitosan from marine shells. However, the slow reaction has prompted the addition of hydrogen bond acceptor solution into the graviola extract. Choline chloride is an excellent hydrogen bond acceptor mixed with acetogenin as hydrogen bond donor to form natural deep eutectic solvent (NADES) for the direct extraction of chitosan. Chitosan obtained from this method has a degree of deacetylation of 91% and a molecular weight of 481 kDa with fiber-like morphology. The direct extraction of chitosan from NADES consisting of choline chloride and acetogenin has proven to extract chitosan with comparable properties to commercial chitosan.

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来源期刊

Current Chemistry Letters Chemistry-Chemistry (all)

CiteScore

4.90

自引率

0.00%

发文量

审稿时长

20 weeks

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