PDF(Pubmed)
Abstract：
Banana peels, comprising about 35% of the fruit\'s weight, are often discarded, posing environmental and economic issues. This research focuses on recycling banana peel waste by optimizing advanced extraction techniques, specifically microwave-assisted (MAE) and ultrasound-assisted extraction (UAE), for the isolation of phenolic compounds. A choline chloride-based deep eutectic solvent (DES) with glycerol in a 1:3 ratio with a water content of 30% (w/w) was compared to 30% ethanol. Parameters, including sample-to-solvent ratio (SSR), extraction time, and temperature for MAE or amplitude for UAE, were varied. Extracts were analyzed for hydroxycinnamic acid (HCA) and flavonoid content, and antioxidant activity using FRAP and ABTS assays. DES outperformed ethanol, with HCA content ranging from 180.80 to 765.92 mg/100 g and flavonoid content from 96.70 to 531.08 mg/100 g, accompanied by higher antioxidant activity. Optimal MAE conditions with DES were an SSR of 1:50, a temperature of 60 °C, and a time of 10 min, whereas an SSR of 1:60, time of 5 min, and 75% amplitude were optimal for UAE. The polyphenolic profile of optimized extracts comprised 19 individual compounds belonging to the class of flavonols, flavan-3-ols, and phenolic acids. This study concluded that DESs, with their superior extraction efficiency and environmental benefits, are promising solvents for the extraction of high-value bioactive compounds from banana peels and offer significant potential for the food and pharmaceutical industries.
摘要：
香蕉皮,约占水果重量的35%，经常被丢弃，提出环境和经济问题。本研究的重点是通过优化先进的提取技术回收香蕉皮废物，特别是微波辅助提取(MAE)和超声辅助提取(UAE)，用于分离酚类化合物。将基于氯化胆碱的深度低共熔溶剂(DES)与30%(w/w)水含量的甘油以1:3的比例与30%乙醇进行比较。参数,包括样品溶剂比(SSR)，提取时间,MAE的温度或阿联酋的振幅，是多种多样的。分析提取物的羟基肉桂酸（HCA）和类黄酮含量，和使用FRAP和ABTS测定的抗氧化活性。DES优于乙醇，HCA含量为180.80至765.92mg/100g，类黄酮含量为96.70至531.08mg/100g，伴随着更高的抗氧化活性。使用DES的最佳MAE条件是SSR为1:50，温度为60°C，10分钟的时间，而SSR为1:60，时间为5分钟，75％的振幅对于阿联酋是最佳的。优化提取物的多酚谱包含19种属于黄酮醇类的单独化合物，黄烷-3-醇，和酚酸。这项研究得出的结论是，DES，凭借其优越的提取效率和环境效益，是用于从香蕉皮中提取高价值生物活性化合物的有前途的溶剂，并为食品和制药行业提供了巨大的潜力。
