食品科学 ›› 2006, Vol. 27 ›› Issue (10): 58-61.

• 基础研究 • 上一篇    下一篇

Ca2+浸泡处理对发芽糙米生理指标和GABA等物质含量的影响

 韩永斌,  顾振新,  蒋振辉   

  1. 南京农业大学农业部农畜产品加工与质量控制重点开放实验室
  • 出版日期:2006-10-15 发布日期:2011-11-16

Effect of Ca2+ on Some Physiological Indexes and Contents of γ-aminobutyric Acid and Other Essential Substances in Germinating Brown Rice Immersed into Aerobic Water

 HAN  Yong-Bin,   Gu-Zhen-Xin,   Jiang-Zhen-Hui   

  1. Key Laboratory of Food Processing and Quality Control, Ministry of Agriculture, Nanjing Agricultural University, Nanjing 210095, China)
  • Online:2006-10-15 Published:2011-11-16

摘要: 本文研究了外源Ca2+对糙米在浸泡发芽过程中生长状况、呼吸强度和γ-氨基丁酸(GABA)等几种物质含量的影响。结果表明,Ca2+处理浓度在0.5~2.5mmol/L时可加速糙米生长,处理浓度为10mmol/L时抑制其生长;Ca2+能提高发芽糙米的呼吸强度,有利于GABA的积累和抑制Glu,且浓度越高,效果越明显;但对可溶性蛋白质、游离氨基酸、淀粉和还原糖含量的影响不显著。

关键词: Ca2+, 发芽糙米, 生理指标, &gamma, -氨基丁酸(GABA), 主要物质含量

Abstract: Immersed into the solutions containing 0.5, 2.5 and 10.0mmol/L Ca2+ respectively and aerated at the speed of 1.50L/min, brown rice germinated. The growth status, respiratory density of and several compounds contents in germinating brown rice were observed and assayed. The results suggested that Ca2+ could play double roles in brown rice germination,i.e. 0.5mmol/L and 2.5mmol/L Ca2+ could accelerate the growth of brown rice shoot, but 10mmol/L Ca2+ inhibit this process. Itwas also observed that three Ca2+ concentrations mentioned above all enhanced respiratory density of germinating brown rice, increased γ-aminobutyric acid(GABA) contents and impeded the accumulation of Glu in germinating brown rice. These indexes above were dependent on Ca2+ concentration. But on the contents of soluble proteins, free amino acids, starch and reducing sugar, Ca2+ concentration had little effect.

Key words:  , Ca2+; germinating brown rice; physiological index; &gamma, -aminobutyric acid(GABA); content of essential substances;