上海大学学报(自然科学版)

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高粱种子醇溶蛋白的提取条件

王伟1,印丽萍2,陈沁1   

  1. 1.上海大学 生命科学学院,上海 200444; 2.上海市出入境检验检疫局,上海 200135
  • 收稿日期:2006-09-22 修回日期:1900-01-01 出版日期:2007-12-20 发布日期:2007-12-20
  • 通讯作者: 陈沁1

Different Conditions of Sorghum Seed's Kafirin Extraction

WANG Wei1,YIN Li-ping2,CHEN Qin1   

  1. 1. School of Life Sciences, Shanghai University, Shanghai 200444, China;
    2. Shanghai EntryExit Quarantine and Inspection Bureau, Shanghai 200135, China
  • Received:2006-09-22 Revised:1900-01-01 Online:2007-12-20 Published:2007-12-20
  • Contact: WANG Wei1

摘要:

以高粱种子为材料,研究了不同提取剂、提取剂用量、浓度和还原剂浓度对高粱种子醇溶蛋白提取的影响.蛋白浓度测定和SDSPAGE电泳表明,DDT浓度为4%的60%叔丁醇溶液,样品质量比提取剂用量为1∶8(g/mL)是提取高粱种子醇溶蛋白的最佳条件.该条件下,提取高粱属不同种的种子醇溶蛋白,得到的高粱属种子醇溶蛋白的“指纹”图谱,可以用来区分高粱属内的种间差异.

关键词: 醇溶蛋白, 高粱, 提取

Abstract:

Effects of different reagents, dosages, concentrations, and reduction reagent concentrations on kafirin extraction from -Sorghum bicolor-were investigated. Measurements of protein concentration and the sodium dodecyl sulphatepolyacrylamide gel electrophoresis (SDS-PAGE) showed that 60% τbutanol plus 4% DTT at a sample-weight to extraction-solution ratio of 1∶8 (g/mL) was optimum for kafirin extraction. Other sorghum species' alcoholsolute protein (prolamin) were extracted under this condition. It is concluded that, by studying the protein “fingerprint”, different sorghum species can be discriminated from each other.

Key words: extraction, kafirin, sorghum