CONCENTRATIONS OF KJELDAHL-DIGESTED NITROGEN, AMYLOSE, AND AMINO-ACIDS IN MILLED GRAINS OF RICE (ORYZA-SATIVA L.) CULTIVATED UNDER ORGANIC AND CUSTOMARY FARMING PRACTICES

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 dif ferences between the two cultivation methods. The concentrations of hy drolyzed amino acids tended to be higher in milled rice grains obtaine d using customary farming practices than in those obtained using organ ic farming practices. In contrast, the concentrations of free amino ac ids were one hundred or more times lower than those of hydrolyzed amin o acids. However, of the free amino acids, aspartic acid, glutamic aci d, glutamine, and asparagine were significantly higher in milled rice grains from organically grown rice than in those from the customary fa rming practices. However, studies on the relationship of amount of com ponents such as Kjeldahl-digested N and amino acids to eating quality of rice remain to be examined.