Characterization and Antioxidant Activity of Microwave-Extracted Phenolic Compounds from Biomass Residues,ACS Sustainable Chemistry & Engineering

当前位置： X-MOL 学术 › ACS Sustain. Chem. Eng. › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

Characterization and Antioxidant Activity of Microwave-Extracted Phenolic Compounds from Biomass Residues
ACS Sustainable Chemistry & Engineering ( IF 7.1 ) Pub Date : 2020-01-10 , DOI: 10.1021/acssuschemeng.9b06002
Daily Rodríguez-Padrón ₁ , Deyang Zhao _{2,

3} , Romina N. Garín Ortega ₁ , Christophe Len _{2,

3} , Alina M. Balu ₁ , Aracelí García ₁ , Rafael Luque _{1,

4}

Affiliation

The present work deals with the extraction of phenolic compounds from biomass through microwave-assisted processes. In this case, green walnut shell residues have being studied for the extraction of phenolic compounds with antioxidant power, as an attractive option for their valorization toward value-added compounds. Thus, our work is focused on the optimization of the microwave extraction conditions, in terms of solvent system, temperature, and time, in order to obtain phenolic compounds with higher antioxidant properties from the green walnut shell. Several tests were performed to investigate the effect of each parameter on the antioxidant activity and in the total phenolic content. Water/acetonitrile (1:1) was found as the best solvent system. In addition, 30 min and 100 °C were selected as optimum extraction parameters. Under the aforementioned conditions, 95% of antioxidant power and a total phenolic content 99.09 ± 0.09 mg GAE/g of extract was achieved. These results are in accordance with the observed data from ATR-IR spectra, suggesting that under such conditions the best balance between phenolic content and lower polysaccharide contamination was reached. This work could pave the way in order to minimize the impact of waste on the environment, and it can be useful for those companies that would like to introduce the circular economy and obtain more benefits from the generated residues.

中文翻译：

微波提取生物质残留物中酚类化合物的表征和抗氧化活性

本工作涉及通过微波辅助工艺从生物质中提取酚类化合物。在这种情况下，绿色核桃壳残留物已被研究用于具有抗氧化能力的酚类化合物的提取，作为其增值化合物增值的有吸引力的选择。因此，我们的工作重点是在溶剂体系，温度和时间方面优化微波提取条件，以便从生核桃壳中获得具有更高抗氧化性能的酚类化合物。进行了几次测试，以研究每个参数对抗氧化剂活性和总酚含量的影响。发现水/乙腈（1：1）是最好的溶剂体系。此外，选择30分钟和100°C作为最佳提取参数。在上述条件下，获得了95％的抗氧化剂和总酚含量为99.09±0.09 mg GAE / g提取物。这些结果与从ATR-IR光谱观察到的数据一致，表明在这种条件下，酚含量和较低的多糖污染之间达到了最佳平衡。这项工作可以铺平道路，以最大程度地减少废物对环境的影响，对于希望引入循环经济并从产生的残渣中获得更多收益的公司而言，这可能是有用的。这表明在这样的条件下，酚含量和较低的多糖污染之间达到了最佳平衡。这项工作可以铺平道路，以最大程度地减少废物对环境的影响，对于希望引入循环经济并从产生的残渣中获得更多收益的公司而言，这可能是有用的。这表明在这样的条件下，酚含量和较低的多糖污染之间达到了最佳平衡。这项工作可以铺平道路，以最大程度地减少废物对环境的影响，对于希望引入循环经济并从产生的残渣中获得更多收益的公司而言，这可能是有用的。

更新日期：2020-01-10

点击分享查看原文

点击收藏

阅读更多本刊最新论文本刊介绍/投稿指南11