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从废弃物到绿色资源：洋葱皮中多酚的水基提取及其在葡萄修剪残渣生物炭上的吸附

From Waste to Green: Water-Based Extraction of Polyphenols from Onion Peel and Their Adsorption on Biochar from Grapevine Pruning Residues.

作者信息

Prelac Melissa, Palčić Igor, Cvitan Danko, Anđelini Dominik, Repajić Maja, Ćurko Josip, Kovačević Tvrtko Karlo, Goreta Ban Smiljana, Užila Zoran, Ban Dean, Major Nikola

机构信息

Institute of Agriculture and Tourism, Karla Huguesa 8, 52440 Poreč, Croatia.

Department of Food Engineering, Faculty of Food Technology and Biotechnology, University of Zagreb, Pierottijeva 6, 10000 Zagreb, Croatia.

出版信息

Antioxidants (Basel). 2023 Aug 31;12(9):1697. doi: 10.3390/antiox12091697.

DOI:10.3390/antiox12091697
PMID:37760000
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC10525769/
Abstract

Onion peels (OP) are rich in bioactive compounds with a plethora of benefits for human health, but this valuable material is often wasted and underutilized due to its inedibility. Likewise, grapevine pruning residues are commonly treated as agricultural waste, but biochar (BC) obtained from this material has favorable characteristics as an adsorbent. This study investigated the potential of BC in removal of targeted polyphenolic compounds from OP extracts. The OP extracts were obtained adhering to green chemistry principles using deionized water amplified by three methods: maceration (MAC), ultrasound-assisted extraction (UAE), and microwave-assisted extraction (MAE). The extraction efficiency on the polyphenolic profile and antioxidant capacity was investigated with different extraction temperatures and solid-to-liquid (s/l) ratios. For further analysis, UAE at 90 °C with an s/l ratio of 1:100 was used due to higher polyphenolic compound yield. The BC adsorption capacity of individual polyphenols was fitted with the Langmuir and Freundlich isotherm models. Quercetin-3,4'-diglucoside obtained the highest R coefficient in both models, and the highest q value. The optimum conditions in the dosage experiment suggested an amount of 0.5 g of BC using 3 g/L extracts. The studied BC showed a high affinity for targeted phytochemicals from OP extracts, indicating its potential to be applied for the green adsorption of valuable polyphenolic compounds.

摘要

洋葱皮富含对人体健康有诸多益处的生物活性化合物，但由于其不可食用，这种宝贵的材料常常被浪费且未得到充分利用。同样，葡萄树修剪残余物通常被当作农业废弃物处理，不过从这种材料中获得的生物炭（BC）作为吸附剂具有良好特性。本研究调查了生物炭从洋葱皮提取物中去除目标多酚类化合物的潜力。洋葱皮提取物是遵循绿色化学原则，使用通过三种方法增强的去离子水获得的：浸渍法（MAC）、超声辅助提取法（UAE）和微波辅助提取法（MAE）。研究了不同提取温度和固液（s/l）比下对多酚类成分和抗氧化能力的提取效率。为了进一步分析，由于多酚类化合物产量较高，采用了90℃、固液比为1:100的超声辅助提取法。将生物炭对单个多酚的吸附容量与朗缪尔和弗伦德里希等温线模型进行拟合。槲皮素 - 3,4'-二葡萄糖苷在两个模型中均获得最高的R系数和最高的q值。剂量实验中的最佳条件表明，使用3 g/L提取物时生物炭用量为0.5 g。所研究的生物炭对洋葱皮提取物中的目标植物化学物质表现出高亲和力，表明其有潜力用于绿色吸附有价值的多酚类化合物。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/06cf/10525769/89319a2e4615/antioxidants-12-01697-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/06cf/10525769/bda518a9eaa2/antioxidants-12-01697-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/06cf/10525769/32a8740ec121/antioxidants-12-01697-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/06cf/10525769/910f734e309b/antioxidants-12-01697-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/06cf/10525769/d6eee4f9120d/antioxidants-12-01697-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/06cf/10525769/10e66f579447/antioxidants-12-01697-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/06cf/10525769/89319a2e4615/antioxidants-12-01697-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/06cf/10525769/bda518a9eaa2/antioxidants-12-01697-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/06cf/10525769/32a8740ec121/antioxidants-12-01697-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/06cf/10525769/910f734e309b/antioxidants-12-01697-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/06cf/10525769/d6eee4f9120d/antioxidants-12-01697-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/06cf/10525769/10e66f579447/antioxidants-12-01697-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/06cf/10525769/89319a2e4615/antioxidants-12-01697-g006.jpg

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