Alternatives for the extraction of bioactives and biopolymers from Evernia prunastri for the formulation of antimicrobial bio-based films†

IF 11.3 1区化学 Q1 CHEMISTRY, PHYSICAL

ACS Catalysis Pub Date : 2024-09-30 DOI:10.1039/d4gc02741h

Julie Queffelec , William Beraud , Solenn Ferron , Joël Boustie , Ismael Rodríguez-González , Beatriz Díaz-Reinoso , Mª Dolores Torres , Herminia Domínguez

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Abstract

The recent growing interest in the biological properties of lichen metabolites has evidenced different needs and challenges for further exploration, including the development of green processing with safer solvents and more efficient use of energy. Microwave assisted hydrothermal processing, applied after supercritical CO₂ extraction, was proposed for the sequential extraction of bioactives and biopolymer fractions. Alternatively, it was combined with natural deep eutectics (NaDES) as cosolvents. Lichenic acids, antioxidants and oligosaccharides were simultaneously extracted using NaDES, and the recovered polysaccharides showed adequate mechanical properties for the formulation of films with antimicrobial action against Gram positive bacteria. An environmental assessment of the three different processes using the Eco-Scale suggested that the NaDES microwave extraction was, due to its low toxicity and good extraction yield of polysaccharides, the most sustainable of the three processes.

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从 Evernia prunastri 中提取生物活性物质和生物聚合物用于配制抗菌生物基薄膜的替代方法

近年来，人们对地衣代谢物的生物特性的兴趣日益浓厚，这证明了进一步探索的不同需求和挑战，包括开发使用更安全溶剂和更有效利用能源的绿色加工方法。有人建议在超临界二氧化碳萃取之后采用微波辅助水热处理，以连续萃取生物活性物质和生物聚合物馏分。此外，还结合了天然深层共晶（NaDES）作为共溶剂。使用 NaDES 同时提取地衣酸、抗氧化剂和低聚糖，回收的多糖显示出足够的机械性能，可用于配制对革兰氏阳性细菌具有抗菌作用的薄膜。利用生态尺度对三种不同工艺进行的环境评估表明，NaDES 微波萃取法毒性低，多糖萃取率高，是三种工艺中最具可持续性的一种。

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来源期刊

ACS Catalysis CHEMISTRY, PHYSICAL-

CiteScore

20.80

自引率

6.20%

发文量

1253

审稿时长

1.5 months

期刊介绍： ACS Catalysis is an esteemed journal that publishes original research in the fields of heterogeneous catalysis, molecular catalysis, and biocatalysis. It offers broad coverage across diverse areas such as life sciences, organometallics and synthesis, photochemistry and electrochemistry, drug discovery and synthesis, materials science, environmental protection, polymer discovery and synthesis, and energy and fuels. The scope of the journal is to showcase innovative work in various aspects of catalysis. This includes new reactions and novel synthetic approaches utilizing known catalysts, the discovery or modification of new catalysts, elucidation of catalytic mechanisms through cutting-edge investigations, practical enhancements of existing processes, as well as conceptual advances in the field. Contributions to ACS Catalysis can encompass both experimental and theoretical research focused on catalytic molecules, macromolecules, and materials that exhibit catalytic turnover.