Evaluation of the Bioaccessibility of Antioxidant Bioactive Compounds and Minerals of Four Genotypes of Brassicaceae Microgreens
Evaluation of the Bioaccessibility of Antioxidant Bioactive Compounds and Minerals of Four Genotypes of Brassicaceae Microgreens
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DOI：
10.3390/foods8070250
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发表时间：
2019-07-01
期刊：
影响因子：
5.2
通讯作者：
Cilla, Antonio
中科院分区：
文献类型：
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作者：
de la Fuente, Beatriz;Lopez-Garcia, Gabriel;Cilla, Antonio
由于其营养成分，Microgreens构成了一种新兴的新鲜健康食品。本研究首次对青花菜（Brassica oleracea L.）变种italica Plenck）、绿色羽衣甘蓝（Brassica oleracea var. sabellica L.），红芥菜（Brassica juncea（L.）Czern.）和萝卜（Raphanus sativus L.）水培的微型蔬菜。在标准化模拟胃肠消化过程前后测定宏量（K、Ca、Mg）和微量元素（Fe、Zn）、抗坏血酸、总可溶性多酚、总类胡萝卜素、总花青素、总异硫氰酸酯和总抗氧化能力（Trolox当量抗氧化能力和氧自由基吸收能力）。所有微绿提供了相关量的维生素C（31-56 mg / 100 g鲜重）和总类胡萝卜素（162-224 mg β-胡萝卜素/ 100 g干重）。矿物质含量与水培微绿中通常发现的矿物质含量相当，观察到的低钾水平将允许他们对肾功能受损患者的饮食建议。总可溶性多酚和总异硫氰酸酯是消化后总抗氧化能力的最大贡献者（分别为43-70%和31-63%的生物可利用性），而大量元素显示出重要的生物可利用性（34-90%）。在一般情况下，萝卜和芥菜的生物活性化合物和矿物质的生物可及性最高。总的来说，四种水耕法栽培的洋地黄科微绿植物呈现出广泛的抗氧化生物活性化合物。
Microgreens constitute an emerging class of fresh, healthy foods due to their nutritional composition. In this study the content of minerals and antioxidant bioactive compounds, and for the first time bioaccessibility, were evaluated in broccoli (Brassica oleracea L. var. italica Plenck), green curly kale (Brassica oleracea var. sabellica L.), red mustard (Brassica juncea (L.) Czern.) and radish (Raphanus sativus L.) hydroponic microgreens. Macro-(K, Ca, Mg) and oligo-elements (Fe, Zn), ascorbic acid, total soluble polyphenols, total carotenoids, total anthocyanins, total isothiocyanates and total antioxidant capacity (Trolox Equivalent Antioxidant Capacity and Oxygen Radical Absorbance Capacity) were determined before and after the standardized simulated gastrointestinal digestion process. All microgreens provided relevant amounts of vitamin C (31-56 mg / 100 g fresh weight) and total carotenoids (162-224 mg beta-carotene / 100 g dry weight). Mineral content was comparable to that normally found in hydroponic microgreens and the low potassium levels observed would allow their dietetic recommendation for patients with impaired kidney function. Both total soluble polyphenols and total isothiocyanates were the greatest contributors to the total antioxidant capacity after digestion (43-70% and 31-63% bioaccessibility, respectively) while macroelements showed an important bioaccessibility (34-90%). In general, radish and mustard presented the highest bioaccessibility of bioactive compounds and minerals. Overall, the four hydroponic Brassicaceae microgreens present a wide array of antioxidant bioactive compounds.