Antioxidant capacity, total phenolic and ascorbate content as a function of the genetic diversity of leek (Allium ampeloprasum var. porrum)
Antioxidant capacity, total phenolic and ascorbate content as a function of the genetic diversity of leek (Allium ampeloprasum var. porrum)
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DOI：
10.1016/j.foodchem.2012.02.159
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发表时间：
2012-09-15
期刊：
影响因子：
8.8
通讯作者：
Van Droogenbroeck, Bart
中科院分区：
文献类型：
--
作者：
Bernaert, Nathalie;De Paepe, Domien;Van Droogenbroeck, Bart
研究了 30 个韭葱品种的白茎和绿叶提取物的抗氧化特性、总酚 (TP) 和 L-抗坏血酸 (AA) 含量。测量的抗氧化性能包括对过氧自由基 (ORAC) 和 2,2-二苯基-1-三硝基苯肼自由基 (DPPH) 的自由基清除活性及其 Fe3+ 还原能力 (FRAP)。这项研究的结果表明，绿韭菜叶通常比白韭菜叶具有明显更强的抗氧化性能。 TP、M含量与抗氧化活性的相关分析表明，酚类物质和抗坏血酸对韭菜的抗氧化活性贡献显着。 30 个韭葱品种的白茎提取物的三种抗氧化活性测定均具有相关性。主成分分析（PCA）阐明了品种部位和类型对抗氧化能力的影响。 TP和L-抗坏血酸含量，而育种策略和种子公司没有影响。 (C) 2012 Elsevier Ltd. 保留所有权利。
Extracts of the white shaft and green leaves of 30 leek cultivars were investigated for their antioxidant properties, total phenolic (TP) and L-ascorbic acid (AA) content. The measured antioxidant properties included free radical scavenging activities against peroxyl (ORAC) and 2,2-diphenyl-1-picrylhydrazyl radicals (DPPH) and their Fe3+ reducing capacity (FRAP). The results from this study suggest that the green leek leaves generally have significantly stronger antioxidant properties than the white shaft. Correlation analysis between the TP and the M content and the antioxidant activity showed that phenolics and ascorbic acid contribute significantly to the antioxidant activity of leek. The three antioxidant activity assays were all correlated for the extracts of the white shaft of the 30 leek cultivars. Principal component analysis (PCA) elucidated the influence of part and type of cultivar on the antioxidant capacity. TP, and L-ascorbic acid content, whilst the breeding strategy and seed company had no influence. (C) 2012 Elsevier Ltd. All rights reserved.