文献类型： 外文期刊
作者： Yang, Wei-hai 1 ; Lu, Chao-zhong 2 ;
作者机构： 1.Yichun Univ, Coll Life Sci & Resources & Environm, Yichun 336000, Peoples R China
2.Chinese Acad Trop Agr Sci, South Subtrop Crops Res Inst, Zhanjiang, Peoples R China
关键词： Macadamia flower; flavonoids; phenolics; antioxidant activity; solvents
期刊名称：NATURAL PRODUCT COMMUNICATIONS （ 影响因子：1.496； 五年影响因子：1.352 ）
ISSN： 1934-578X
年卷期： 2022 年 17 卷 5 期
页码：
收录情况： SCI
摘要： This study investigated the differences in phenolic composition and antioxidant properties among 4 extracts (eg,70% acetone, 70% methanol, 70% ethanol, and water) of 2 taxa of Macadamia flowers ("Nanya No.2" and "HAES695" cultivars). The results showed that the phenolic compounds and antioxidant properties of the extracts were taxa- and solvent-dependent. "Nanya No.2" flowers possessed remarkably more phenolics and flavonoids, with more robust antioxidant activities than "HAES695". The 70% acetone extract exhibited the highest polyphenol levels and antioxidant capacities, indicating that 70% acetone would be the most efficient solvent for extracting phenolic antioxidants from macadamia flowers. The high-performance liquid chromatography (HPLC) analysis revealed rutin and catechin as the richest compounds in the extracts of both cultivars. Ferulic acid, catechin, phlorizin, quercetin, and kaempferol positively correlated with the antioxidant properties of the macadamia flowers. These results provide valuable information for utilizing macadamia flowers in antioxidant foods.
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