119种植物种子蛋氨酸含量分析

陈宏伟1; 2; 3; 5; $22; 4; $23; $21; 2; 3; 5*

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119种植物种子蛋氨酸含量分析
陈宏伟1，2，3，5，杨进军2，4，饶力群3，邱业先1，2，3，5*
1.苏州科技学院化学与生物工程学院，苏州 215009;2.江西农业大学理学院，南昌330045;3.湖南农业大学生物科学技术学院，长沙 410128;4.天津理工大学环境科学与安全工程学院， 天津300191;5.江苏省环境功能材料重点实验室，苏州 215009

摘要:

豆科植物蛋白中含硫氨基酸尤其是蛋氨酸含量低，影响其蛋白质的营养价值。为开发出更高甲硫氨酸含量蛋白质基因资源，采用酸水解法，对我国亚热带常见的119种森林植物种子的蛋氨酸含量进行了测定。结果表明：93%以上植物种子的蛋氨酸含量较低，只有八仙花、榕叶冬青、山苍子、锌树、龙葵、栾树、商陆和盐肤木的蛋氨酸含量在10.00 mg/g以上，其中盐肤木的蛋氨酸含量为119种植物中最高，达36.89 mg/g，可以作为进一步开发的新型高蛋氨酸蛋白基因资源。

关键词: 亚热带植物贮藏蛋白蛋氨酸

DOI：

分类号:Q517，Q781，S188

Fund project:

Analysis of methionine contents in seeds of 119 plants

CHEN HongWei1，2，3，5， YANG JinJun2，4， RAO LiQun3， QIU YeXian1，2，3，5*

1.College of Chemistry and Bioengineering， Suzhou University of Science and Technology， Suzhou 215009， China;2.College of Science， Jiangxi Agricultural University， Nanchang 330045， China;3.College of Bioscience and Technology， Hunan Agricultural University， Changsha 410128， China;4.School of Environmental Science and Safety Engineering， Tianjin University of Technology， Tianjin 300191， China;5.Jiangsu Key Laboratory for Environment Functional Materials， Suzhou University of Science and Technology， Suzhou， 215009， China

Abstract:

Low content of the sulfur amino acid especially methionine is responsible for the relatively poor nutritional quality of legume protein. The methionine content in seeds of 119 subtropical plants in our country was determined by acid hydrolysis method. The results showed that more than 93% plants had low methionine contents. However，the methionine content of Hydrangea macrophylla，Ilex ficoidea，Litsea cubeba var.formosana，Catalpa ovata，Solanum nigrum，Koelreuteria paniculata，Phytolacca acinosa and Rhus chinensis was found to exceed 10.00 mg/g，and that of Rhus chinensis was the highest，which reached 36.89 mg/g. The species Rhus chinensis could serve as a new methionine rich protein gene resource.

Key words: subtropical plant storage proteins methionine