Onion (Allium cepa L.) skin waste for industrial applications: A sustainable strategy for value addition and circular economy

Q1 Environmental Science

Bioresource Technology Reports Pub Date : 2025-02-01 DOI:10.1016/j.biteb.2025.102094

Sampson Kofi Kyei , Alex Justice Frimpong , Eric Selorm Agorku , William Iheanyi Eke , Onyewuchi Akaranta

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Abstract

Bioactive compounds from onion skin waste may be used as raw materials in sustainable industrial development. This review synthesizes and critically analyses current research to find gaps and highlight novel onion skin valorization methods not covered extensively in previous studies. After introducing onion skin waste, the review ties onion skin waste valorization to circular bioeconomy, conventional and green extraction, and applications. The advanced green extraction methods are emphasised for their improved phenolic component selectivity from onion peel waste. The biological properties of onion skin extracts are explored for their therapeutic use. Onion skin waste's applications discussed include agriculture, textiles, biofuels, and other industries to promote sustainable development. Additionally, the challenges and recommendations for future research directions on the valorization of onion skin waste are explored. The findings suggest using onion skin waste to make valuable products and promote a circular, sustainable economy based on waste management.

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工业应用中的洋葱（Allium cepa L.）皮废弃物：增值和循环经济的可持续战略

洋葱皮废弃物的生物活性化合物可作为可持续工业发展的原料。这篇综述综合并批判性地分析了目前的研究，以发现空白，并突出了以前研究中未广泛涉及的新的洋葱皮增值方法。在介绍洋葱皮废弃物的基础上，从循环生物经济、传统提取和绿色提取、应用等方面对洋葱皮废弃物的价值评价进行了综述。重点介绍了先进的绿色提取方法，以提高洋葱皮废弃物中酚类成分的选择性。探讨了洋葱皮提取物的生物学特性及其治疗用途。讨论了洋葱皮废弃物在农业、纺织、生物燃料等行业的应用，以促进可持续发展。最后，对洋葱皮废弃物增值研究面临的挑战和未来研究方向进行了展望。研究结果表明，利用洋葱皮废料制造有价值的产品，并在废物管理的基础上促进循环、可持续的经济。

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