Nutritional quality of ten leafy vegetables harvested at two light intensities
Nutritional quality of ten leafy vegetables harvested at two light intensities
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DOI：
10.1016/j.foodchem.2015.12.068
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发表时间：
2016-05-15
期刊：
影响因子：
8.8
通讯作者：
De Pascale, Stefania
中科院分区：
文献类型：
--
作者：
Colonna, Emma;Rouphael, Youssef;De Pascale, Stefania
测定了10种叶类蔬菜(菊苣、绿生菜、生菜、水葫芦、红菜、红生菜、火箭菜、菠菜、瑞士菜、刺梨)的营养成分和采收期光强(低、高光合作用辐射；PAR)对叶类蔬菜品质的影响。无论采收期光照强度如何，火箭叶片干物质(DM)、蛋白质、硝酸盐、P、K和Ca含量最高，其次是水稻田。红生菜和火炬菜的抗氧化脂活性(LAA)最高，而抗坏血酸(AA)和总酚(TP)含量高于其他叶类蔬菜。低PAR采收叶用蔬菜的干物质、蛋白质、K、Ca、Mg含量、亲水性抗氧化活性(HAA)和LAA含量分别比高PAR高12.5%、10.0%、12.6%、23.7%、14.1%、11.9%和18.5%。在高PAR条件下，菊苣、绿生菜、生菜、米祖纳、红菜叶和红生菜的总磷含量最高。(C)2015爱思唯尔有限公司。保留所有权利。
The nutritional composition of ten leafy vegetables (chicory, green lettuce, lamb's lettuce, mizuna, red chard, red lettuce, rocket, spinach, Swiss chard, and tatsoi) and quality traits of the selected leafy vegetables in relation to the light intensity (low and high Photosynthetically Active Radiation; PAR) at time of harvest were determined. Irrespective of the light intensity at time of harvest, the highest leaf dry matter (DM), proteins, nitrate, P, K and Ca contents were observed in rocket followed by mizuna. The highest lipophilic antioxidant activity (LAA) was recorded in red lettuce and rocket, whereas ascorbic acid (AA) and total phenolic (TP) contents of red lettuce were higher compared to the other leafy vegetables. When leafy vegetables were harvested at low as opposed to high PAR, the leaf content was higher in DM, protein, K, Ca and Mg, hydrophilic antioxidant activity (HAA), and LAA by 12.5%, 10.0%, 12.6%, 23.7%, 14.1%, 11.9%, and 18.5%, respectively. The highest values in TP for chicory, green lettuce, lamb's lettuce, mizuna, red chard, and red lettuce, were observed under high PAR. (C) 2015 Elsevier Ltd. All rights reserved.