Relationship between fatty acid profile and vitamin E content in maize hybrids (Zea mays L.)
Relationship between fatty acid profile and vitamin E content in maize hybrids (Zea mays L.)
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DOI：
10.1021/jf010156y
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发表时间：
2001-10-01
影响因子：
6.1
通讯作者：
Böhme, T
中科院分区：
文献类型：
--
作者：
Goffman, FD;Böhme, T
维生素E（生育色原烷醇）和多不饱和脂肪酸（PUFA）含量的平衡主要决定了玉米油对脂质过氧化的敏感性和储存稳定性。1997年，在两个不同的地点进行了田间试验，以评估收集的30个玉米杂交种的脂肪酸谱和生育色原醇含量。杂交种的主要脂肪酸、生育色原烷醇含量和组成差异显著（p < 0.01）。其中棕榈酸、油酸和亚油酸的含量分别为9.2- 12.1%、19.5- 30.5%和53.0- 65.3%。生育酚含量范围如下：α-生育酚，67-276 mg（kg油）（-1）; β-生育酚，0-20 mg（kg油）（-1）; γ-生育酚，583-1048 mg（kg油）（-1）; δ-生育酚，12-71 mg（kg油）-1;总生育酚，767-1344 mg（kg油）（-1）。γ-生育酚是所有生育酚中的主要衍生物。生育三烯酚含量的α-、γ-和总生育三烯酚含量分别在46-89、53-164和99-230 mg（kg油）（-1）的范围内。生育三烯酚的特征是。不以任何生育三烯酚同系物占主导地位为特征。α-生育酚与多不饱和脂肪酸（r = 0.41**）和维生素E当量（vit E equiv）（r = 0.84**）呈正相关，与γ-生育酚不相关。γ-生育酚与总生育酚和生育色满酚含量高度相关（分别为r = 0.93** 和r = 0.90**），表明该维生素对总生育色满酚含量的贡献在所有生育色满酚中是最重要的。在维生素E/PUFA比率和维生素E当量之间发现的高度正相关性，以及该比率和PUFA之间不存在相关性，表明通过增加维生素E含量比通过改变玉米油中的脂肪酸谱更容易实现更高的维生素E/PUFA比率。
The balance between the vitamin E (tocochromanols) and polyunsaturated fatty acid (PUFA) contents mainly determines the,susceptibility to lipid peroxidation and the storage stability of corn oil. In 1997, field experiments were conducted at two different locations to evaluate a collection of 30 corn hybrids for fatty acid profiles and tocochromanol contents. Hybrids differed significantly (p < 0.01) for major fatty acids, as well as for tocochromanol contents and composition. The major fatty acids were palmitic, oleic, and linoleic acids, whose contents were in the ranges 9.2-12.1%, 19.5-30.5%, and 53.0-65.3%, respectively. The tocopherol contents ranged as follows: a-tocopherol, 67-276 mg (kg of oil)(-1); beta -tocopherol, 0-20 mg (kg of oil)(-1); gamma -tocopherol, 583-1048 mg (kg of oil)(-1); delta -tocopherol, 12-71 mg (kg of oil)-1; total tocopherol, 767-1344 mg (kg of oil)(-1). gamma -Tocopherol was the predominant derivative among all tocopherols. The tocotrienol contents were in the ranges 46-89, 53-164, and 99-230 mg (kg of oil)(-1) for alpha-, gamma-, and total tocotrienol contents, respectively. The tocotrienol profile was. not characterized by the predominance of any tocotrienol homologue. a-Tocopherol was positively correlated with PUFA (r = 0.41**) and with the vitamin E equivalent (vit E equiv) (r = 0.84**), and it was not correlated with gamma -tocopherol. gamma -Tocopherol was highly correlated with total tocopherol and tocochromanol contents (r = 0.93** and r = 0.90**, respectively), indicating that the contribution of this vitamer to the total tocochromanol content is the most important among all tocochromanols. The high positive correlation found between the vit E/PUFA ratio and the vit E equiv, as well as the absence of correlation between this ratio and PUFA indicates that a higher vit E/PUFA ratio can be easier achieved be increasing the vitamin E content than by modifying fatty acid profile in corn oil.