Extraction, chemical components, bioactive functions and adulteration identification of walnut oils: A review

Q2 Agricultural and Biological Sciences Grain Oil Science and Technology Pub Date : 2024-03-01 DOI:10.1016/j.gaost.2024.01.004

Yuan Gao , Jia Hu , Xia Su , Qi Li , Caihong Su , Yongling Li , Gaiqin Ma , Siyu Zhang , Xiuzhu Yu

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Abstract

Walnut oil is a functional wood oil known to researchers that may potentially be a large source of Chinese edible oils. There are various extraction methods for walnut oil, including traditional (pressing, solvent- and enzyme-assisted extraction) and novel methods (microwave, ultrasound, supercritical CO₂, subcritical and other extraction technologies). Walnut oil is rich in nutrients, including phytosterols, tocopherols, polyphenols, squalene and minerals. It provides many health benefits, such as antioxidant, antitumor, anti-inflammatory, antidiabetic and lipid metabolism-related functions. In addition, the authentication of walnut oil has received much research attention. The present review provides detailed research on walnut oil extraction, composition, health benefits and adulteration identification methods. The path toward further walnut oil improvement in the context of the market value of walnut oil is also discussed.

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核桃油的提取、化学成分、生物活性功能和掺假鉴定：综述

核桃油是研究人员已知的一种功能性木本油料，有可能成为中国食用油的一大来源。核桃油的提取方法多种多样，包括传统方法（压榨、溶剂和酶辅助提取）和新型方法（微波、超声波、超临界二氧化碳、亚临界和其他提取技术）。核桃油含有丰富的营养成分，包括植物甾醇、生育酚、多酚、角鲨烯和矿物质。核桃油具有多种保健功效，如抗氧化、抗肿瘤、抗炎、抗糖尿病和脂质代谢相关功能。此外，核桃油的鉴定也受到了很多研究的关注。本综述对核桃油的提取、成分、保健功效和掺假鉴定方法进行了详细研究。还结合核桃油的市场价值讨论了进一步改进核桃油的途径。

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