The effect of temperature and radiation on flavonol aglycones and flavonol glycosides of kale (Brassica oleracea var. sabellica)
The effect of temperature and radiation on flavonol aglycones and flavonol glycosides of kale (Brassica oleracea var. sabellica)
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DOI：
10.1016/j.foodchem.2012.02.034
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发表时间：
2012-08-15
期刊：
影响因子：
8.8
通讯作者：
Krumbein, Angelika
中科院分区：
文献类型：
--
作者：
Neugart, Susanne;Klaering, Hans-Peter;Krumbein, Angelika
冬季作物羽衣甘蓝具有不同糖基化和酰化黄酮醇苷的复杂特征，可能受到全球变暖的影响。据我们所知，首次建立了黄酮醇苷元和黄酮醇苷的化合物-气候关系。所研究的 10 种主要黄酮醇苷在 0 至 12 摄氏度的研究温度范围和 4 至 20 mol m(-2)d(-1) 之间的光合有效辐射范围内响应结构依赖，例如温度的降低导致芥子酸单酰化和二酰化槲皮素苷的增加，而芥子酸单酰化山奈酚苷在4.5℃时表现出最大值。此外，羟基肉桂酸残基和7-0位上不同数量的葡萄糖部分影响了山奈酚三苷的响应。因此，全球变暖将导致冬季作物中与抗氧化剂相关的槲皮素糖苷浓度降低，这表明例如由于温度较低而海拔较高。 (C) 2012 Elsevier Ltd. 保留所有权利。
The winter crop kale has a complex profile of different glycosylated and acylated flavonol glycosides which may be affected by global warming. To the best of our knowledge, compound-climate relationships for flavonol aglycones and flavonol glycosides were established for the first time. The investigated 10 major flavonol glycosides responded structure-dependent in the investigated temperature range between 0 and 12 degrees C and the photosynthetic active radiation range between 4 and 20 mol m(-2)d(-1), e.g. the decrease in temperature led to an increase in sinapic acid monoacylated and diacylated quercetin glycosides, while the sinapic acid monoacylated kaempferol glycosides showed a maximum at 4.5 degrees C. Furthermore, the hydroxycinnamic acid residues and the different number of glucose moieties in the 7-0 position affected the response of kaempferol triglucosides. Consequently, global warming would result in lower concentrations of antioxidant-relevant quercetin glycosides in winter crops, suggesting a production at e.g. higher altitudes due to lower temperature. (C) 2012 Elsevier Ltd. All rights reserved.