El Darra Nada, Rajha Hiba N, Debs Espérance, Saleh Fatima, El-Ghazzawi Iman, Louka Nicolas, Maroun Richard G
Faculty of Health Sciences, Beirut Arab University, Tarik El Jedidah, Riad El Solh, P.O. Box 115020, Beirut 1107 2809, Lebanon.
Unité de Recherche Technologies et Valorisation Agro-Alimentaire, Centre d'Analyses et de Recherche, Faculté des Sciences, Université Saint-Joseph, Riad El Solh, BP 11-514, Beirut 1107 2050, Lebanon.
Int J Food Sci. 2018 Mar 8;2018:9491681. doi: 10.1155/2018/9491681. eCollection 2018.
Peach byproducts are often regarded as food waste despite their high content in health-promoting components. Amongst the latter, polyphenols are bioactive molecules with significant health benefits. The present study investigated an eco-friendly and cost-effective method using a GRAS food additive, -cyclodextrin (-CD), for the recovery of polyphenols from peach pomace. -CD assisted extraction of polyphenols was compared to that of conventional solvent (ethanol) extraction at the same concentrations (10 mg/mL, 20 mg/mL, 30 mg/mL, 40 mg/mL, and 50 mg/mL) in terms of quality (antiradical activity) and quantity. The extract obtained by 50 mg/mL -CD assisted extraction showed the highest polyphenol (0.72 mg GAE/g DM) and flavonoid (0.35 mg catechin/g of DM) concentrations as maximal antiradical activity (6.82%) and a noted antibacterial activity. Our results showed the competitiveness of -CD assisted extraction to recover a high quantity and quality of polyphenols from peach pomace suggesting -CD as a green alternative method for phenolic extraction.
尽管桃副产品富含对健康有益的成分，但它们通常被视为食物垃圾。其中，多酚是具有显著健康益处的生物活性分子。本研究探索了一种环保且经济高效的方法，即使用一种公认安全（GRAS）的食品添加剂β-环糊精（β-CD）从桃渣中回收多酚。在相同浓度（10毫克/毫升、20毫克/毫升、30毫克/毫升、40毫克/毫升和50毫克/毫升）下，就质量（抗自由基活性）和数量而言，将β-CD辅助提取多酚与传统溶剂（乙醇）提取进行了比较。通过50毫克/毫升β-CD辅助提取获得的提取物显示出最高的多酚（0.72毫克没食子酸当量/克干物质）和黄酮类化合物（0.35毫克儿茶素/克干物质）浓度，具有最大的抗自由基活性（6.82%）和显著的抗菌活性。我们的结果表明，β-CD辅助提取在从桃渣中回收大量高质量多酚方面具有竞争力，这表明β-CD是一种用于酚类提取的绿色替代方法。
