Distribution along durum wheat kernel of the components involved in semolina colour
Distribution along durum wheat kernel of the components involved in semolina colour
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DOI：
10.1016/j.jcs.2007.11.007
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发表时间：
2008-09-01
影响因子：
3.8
通讯作者：
Troccoli, A.
中科院分区：
文献类型：
--
作者：
Borrelli, G. M.;De Leonardis, A. M.;Troccoli, A.
意大利面的亮黄色是硬粒小麦工业的重要质量性状。最终的颜色是粗粒小麦粉中黄色和棕色成分平衡的结果。类胡萝卜素和脂氧合酶（LOX）主要参与黄色，而过氧化物酶（POD）和灰分影响棕色色调。所有这些成分在籽粒中的分布都不同，品种之间也有差异。本研究旨在评价6个硬粒小麦品种籽粒中类胡萝卜素色素、α-生育酚、亚油酸、灰分含量以及脂氧合酶（LOX）和过氧化物酶（POD）活性的分布格局，其特点是粗粒小麦中色素含量和脂氧合酶（LOX）的过氧化活性不同。结果证实了这些成分在整个籽粒和品种之间的分布差异。此外，这项研究确定了一些组件（POD，色素和LOX的漂白活性）的基因型的影响更高，而其他（灰分，（α-生育酚，氢过氧化活性）的脱糠过程的显着影响。这些结果表明，最终的粗粒小麦粉颜色的改善可以通过育种活动，使更好的线的早期选择，并通过适当的脱麸过程。(c)2008年爱思唯尔有限公司保留所有战斗。
A bright yellow colour of pasta is an important qualitative trait for the durum wheat industry. Final colour is the result of the balance between yellow and brown components in semolina. Carotenoid pigments and lipoxygenase (LOX) enzyme are mainly involved in yellowness, whereas peroxidase (POD) and ash affect brown hue. All these components have a different distribution across the kernel, with varietal differences too. This study aimed to evaluate the distribution pattern of carotenoid pigments, a-tocopherol, linoleic acid, and ash content as well as of LOX and POD activities within the kernel of six durum wheat cultivars characterised by different pigment content and hydroperoxidation activity of LOX in semolina. The results confirmed differences in the distribution of these components across the kernel and among varieties. Additionally, this study identified for some components (POD, pigments and bleaching activity of LOX) a higher effect of genotype whereas for others (ash, (alpha-tocopherol, hydroperoxidation activity) a marked effect of the debranning process. These results suggest that improvement of the final semolina colour could be reached both through breeding activity, enabling an early selection of better lines, and through an appropriate debranning process. (c) 2008 Elsevier Ltd. All fights reserved.