Mateo Anson Nuria, van den Berg Robin, Havenaar Rob, Bast Aalt, Haenen Guido R M M
TNO Quality of Life, P.O. Box 360, 3700 AJ Zeist, The Netherlands.
J Agric Food Chem. 2008 Jul 23;56(14):5589-94. doi: 10.1021/jf800445k. Epub 2008 Jun 18.
Grain is an important source of phytochemicals, which have potent antioxidant capacity. They have been implicated in the beneficial health effect of whole grains in reducing cardiovascular disease and type 2 diabetes. The aim of the present study was to identify the most important antioxidant fractions of wheat grain. It was found that the aleurone content of these fractions was highly correlated with the antioxidant capacity of the fractions (r = 0.96, p < 0.0001). Ferulic acid appeared to be the major contributor to the antioxidant capacity in fractions with higher antioxidant capacity. The contribution of protein was rather limited. It was concluded that the antioxidant potency of wheat grain fractions is predominantly determined by aleurone content, which can be attributed to the presence of relatively large amounts of phenolic compounds, primarily ferulic acid.
谷物是植物化学物质的重要来源，这些植物化学物质具有强大的抗氧化能力。它们与全谷物对降低心血管疾病和2型糖尿病的有益健康作用有关。本研究的目的是确定小麦籽粒中最重要的抗氧化成分。结果发现，这些组分的糊粉层含量与组分的抗氧化能力高度相关（r = 0.96，p < 0.0001）。阿魏酸似乎是抗氧化能力较高的组分中抗氧化能力的主要贡献者。蛋白质的贡献相当有限。得出的结论是，小麦籽粒组分的抗氧化能力主要由糊粉层含量决定，这可归因于存在相对大量的酚类化合物，主要是阿魏酸。
