Concentrations of Kjeldahl-digested Nitrogen, Amylose, and Amino Acids in Milled Grains of Rice (Oryza sativa L.) Cultivated under Organic and Customary Farming Practices

Japanese Journal of Crop Science

Gui-Yun WANG¹  Takeo SASAHARA¹  Toshinori ABE¹ 

关键词: Amino acids;    アミノ酸含量;    Amylose;    アミロース含量;    Customary farming practice;    イネ;    Kjeldahl-digested nitrogen;    慣行栽培;    Organic farming practice;    窒素含量;    Oryza sativa L.;    有機栽培;    Rice;   

DOI  :  10.1626/jcs.67.307

学科分类：农业科学（综合）

来源: Nihon Sakumotsu Gakkai / Crop Science Society of Japan

【 摘 要 】

The concentrations of Kjeldahl-digested N were significantly higher in milled rice grains cultivated under customary farming practices than in those grown organically. However, the amylose content showed no differeces between the two cultivation methods. The concentrations of hydrolyzed amino acids tended to be higher in milled rice grains obtained using customary farming practices than in those obtained using organic farming practices. In contrast, the concentrations of free amino acids were one hundred or more times lower than those of hydrolyzed amino acids. However, of the free amino acids, aspartic acid, glutamic acid, glutamine, and asparagine were significantly higher in milled rice grains from organically grown rice than in those from the customary farming practices. However, studies on the relationship of amount of components such as Kjeldahl-digested N and amino acids to eating quality of rice remain to be examined.

【 授权许可】

Unknown